CN117209005A

CN117209005A - A regeneration circulation system, sewage treatment system, method and process

Info

Publication number: CN117209005A
Application number: CN202311359290.4A
Authority: CN
Inventors: 吉青青; 李�灿; 易洋; 肖波; 杨涛; 黄光华
Original assignee: CSCEC Scimee Sci and Tech Co Ltd
Current assignee: CSCEC Scimee Sci and Tech Co Ltd
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2023-12-12
Anticipated expiration: 2043-10-19
Also published as: CN117209005B

Abstract

The invention relates to a regeneration circulation system, a sewage treatment system and a method, wherein the regeneration circulation system comprises a controller, a regeneration reaction device, a discharge device, a feeding device and an action mechanism, wherein the regeneration reaction device comprises at least two reaction chambers, each reaction chamber is respectively provided with a discharge mechanism communicated with the reaction chambers; the system can not only continuously run, but also efficiently reduce and regenerate the magnetic adsorbent, and remarkably improve the recovery efficiency of the magnetic adsorbent.

Description

Regeneration circulation system, sewage treatment system, method and process

Technical Field

The invention relates to the technical field of magnetic adsorbents, in particular to a magnetic adsorbent regeneration circulation system, a sewage treatment method and a process.

Background

The magnetic separation technology is a physical separation method for separating substances with different magnetism by virtue of the action of magnetic force. Magnetic separation technologies (magnetic separation sewage treatment technologies) represented by super magnetic separation technology and magnetic precipitation technology adopt magnetic loading flocculation technology, and the flocculation effect is remarkably enhanced by the addition of magnetic media (or called magnetic seeds). The prior art shows that suspended matters, TP insoluble COD, heavy metals and other pollutants in the water body can be directly removed by the magnetic loading flocculation technology, but the pollutants such as ammonia nitrogen, TN, soluble COD and the like can not be directly removed by the magnetic loading flocculation technology for the solubility index in the water body. In the prior art, in order to remove the solubility index in the wastewater, the biochemical process can only be configured at the downstream of the magnetic separation process, so that in the actual operation process, the magnetic separation process is mainly used for removing suspended matters, TP insoluble COD, heavy metals and other pollutants in the water body, and the biochemical process configured at the downstream of the magnetic separation process is mainly used for removing the solubility index in the water body and has a certain effect, so that the magnetic separation process can be matched with the biochemical process for use, but the whole process flow is more complex, the cost is relatively higher, and some defects existing in the biochemical process cannot be avoided, such as the biochemical process is generally greatly influenced by the environmental temperature, the microorganism culture period is long, the effluent index is difficult to control and the like.

Based on this, a sewage treatment system based on magnetic adsorbent is designed, specifically, magnetic adsorbent with adsorption function is used as magnetic medium, such as magnetic adsorbent capable of adsorbing ammonia nitrogen is used as magnetic medium (for example, the chemical formula is Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ Multiple OPorous support and SmCo present in pores of the porous support ₅ Particles and Fe ₃ O ₄ Particles, wherein n.gtoreq.0), magnetic adsorbents that adsorb dissolved COD are used as magnetic media (e.g., fe ₃ O ₄ N-deacetylation of chitin), and the like. The sewage treatment system not only can directly remove suspended matters, TP insoluble COD, heavy metals and other pollutants in the water body, but also can effectively adsorb solubility indexes in wastewater, such as ammonia nitrogen, soluble COD and the like, so that a biochemical process is not required to be configured to remove the solubility indexes in the water body. In the actual operation process of the system, the magnetic medium is firstly required to be used for adsorbing the solubility index in the wastewater, then the magnetic medium and the non-solubility index in the wastewater form magnetic floccules together, and finally the magnetic floccules can be separated from water under the action of magnetic force to form magnetic sludge, so that the aim of purifying sewage is fulfilled. In order to increase the economy of the sewage treatment system, it is necessary to recover the magnetic medium from the magnetic sludge for reuse. Because the system adopts the magnetic adsorbent with the adsorption function as the magnetic medium, the magnetic sludge generally comprises the magnetic medium with the adsorption solubility index, the magnetic medium without the adsorption solubility index, sludge and the like, and has complex components, and if the magnetic medium in the magnetic sludge is to be recycled, the magnetic medium with the adsorption solubility index needs to be reduced and regenerated so as to obtain the magnetic medium with the adsorption function again; because the magnetic medium needs a certain time for reduction and regeneration reaction, the existing sewage treatment system is usually in a continuous operation state, however, the existing regeneration system is matched with the sewage treatment system, and only the magnetic medium can be intermittently reduced and regenerated, so that the normal continuous operation of the sewage treatment system is influenced, the regeneration efficiency of the magnetic medium is low, and the industrial application is not facilitated.

In view of this, there is a need for a regeneration system that can both reduce and regenerate magnetic adsorbents, and that can be compatible with sewage treatment systems and that can operate continuously and uninterruptedly.

Disclosure of Invention

The first aspect of the present invention is to solve the problem that in a sewage treatment process using a magnetic adsorbent as a magnetic medium, the prior art lacks a regeneration system capable of continuously reducing and regenerating the magnetic adsorbent, which affects the normal continuous operation of the sewage treatment system and has low regeneration recovery efficiency of the magnetic medium, and provides a regeneration circulation system capable of solving the technical problem, and the main concept is as follows:

a regeneration circulation system comprises a controller which plays a role in control,

the regeneration reaction device comprises at least two reaction chambers, each reaction chamber is used for providing a regeneration reaction place, each reaction chamber is respectively provided with a discharge mechanism communicated with the reaction chamber, a controller is respectively and electrically connected with each discharge mechanism and used for controlling each discharge mechanism to sequentially and circularly discharge the substances reacted in each reaction chamber,

the feeding device comprises a main conveying channel and at least one discharge port, the discharge port is communicated with the main conveying channel and is used for being matched with each reaction cavity, the main conveying channel is used for receiving the magnetic substances conveyed out from the upstream and enabling the magnetic substances to be input into each reaction cavity through the discharge port,

A regenerant adding device matched with each reaction cavity and

the action mechanism, the discharge mechanism and the regenerant adding device are respectively and electrically connected with the controller, the controller controls the discharge hole to be sequentially and circularly communicated with each reaction cavity through the action mechanism, sequentially and circularly quantitatively adds the regenerant matched with the magnetic medium into each reaction cavity through the regenerant adding device, and sequentially and circularly discharges the reacted substances in each reaction cavity through the discharge mechanism. In the scheme, the problem of providing a reaction place can be solved by arranging at least two reaction chambers in the regeneration reaction device; by arranging the feeding device and matching the discharge port with the reaction cavity, the problem of receiving and conveying upstream magnetic substances can be solved; the regenerant adding device is arranged and matched with the reaction cavity, so that the problem of adding the regenerant into the reaction cavity can be solved; the controller can control the discharge port to be communicated with each reaction cavity sequentially and circularly through the action mechanism by configuring the action mechanism and electrically connecting the action mechanism with the controller, so that the problem of continuous and uninterrupted upstream magnetic material bearing is solved; the regenerant adding device is configured and electrically connected with the controller, so that the controller can control the sequential and circular quantitative adding of the regenerant matched with the magnetic medium in each reaction cavity through the regenerant adding device, and the problem of continuous and quantitative adding of the regenerant is solved; by respectively configuring the discharge mechanisms for the reaction chambers and electrically connecting the discharge mechanisms with the controller, the controller can sequentially and circularly discharge the substances reacted in the reaction chambers through the discharge mechanisms, so that the problem of continuous discharge is solved; that is, in the system, the action mechanism, the discharge mechanism and the regenerant adding device are operated in a matched mode under the coordinated control of control, so that the purposes of continuously receiving magnetic substances, continuously reducing and regenerating the magnetic adsorbent and continuously discharging the reduced magnetic adsorbent are achieved, the system can be matched with a sewage treatment system and can continuously and uninterruptedly operate, the magnetic adsorbent can be reduced and regenerated efficiently, and the recovery efficiency of the magnetic adsorbent in the operation process of the system is remarkably improved.

In order to improve the regeneration efficiency and the regeneration economy, further, the upstream of the feeding device is also provided with a primary magnetic recovery device, the main conveying channel is communicated with the primary magnetic recovery device, and the primary magnetic recovery device is used for receiving the magnetic sludge conveyed out from the upstream and separating and recovering magnetic substances in the magnetic sludge through magnetic force. In this scheme, through the one-level magnetism recovery unit of upstream configuration, can utilize one-level magnetism recovery unit to separate out magnetic substance from magnetic sludge to can input the reaction chamber of low reaches with magnetic substance, so that separate out magnetic substance handles alone, avoid the interference of mud, and separate out mud discharges alone, avoid getting into the reaction chamber, be favorable to reducing the dosing of regenerant in the reaction chamber like this, thereby be favorable to reducing the cost, on the other hand make regenerant and magnetic substance can more abundant contact and reaction, thereby be favorable to high-efficient reduction and regeneration magnetic medium.

In order to solve the problems of low cost and high efficiency in separating and regenerating magnetic substances in the magnetic sludge, the device further comprises a flocculation removing machine, wherein the flocculation removing machine is arranged at the upstream of the primary magnetic recovery device and is communicated with the primary magnetic recovery device, and the flocculation removing machine is used for receiving the magnetic sludge conveyed out from the upstream and scattering the magnetic sludge. Through the configuration of the flocculation removing machine, the physical crushing of the magnetic sludge can be realized, the magnetic substances in the magnetic sludge can be separated in the first-stage magnetic recovery device, the recovery rate of the magnetic substances in the magnetic sludge can be improved, the content of the residual magnetic substances in the sludge can be reduced, the operation cost can be reduced, and the energy conservation and the environmental protection can be facilitated.

In order to solve the problem of improving the system stability, further, the upper reaches of feed arrangement still is provided with the second cavity, and main conveying channel is linked together with the second cavity, and the second cavity is linked together with one-level magnetism recovery unit, and the second cavity is used for accepting and storing the magnetic substance that is separated by one-level magnetism recovery unit. In this scheme, the second cavity has certain capacity to play buffering, adjust and prevent the effect of excessive between reaction chamber and one-level magnetism recovery unit, make the operation of entire system more stable, can satisfy the demand of various operating modes.

Further, the regeneration reaction device further comprises stirrers arranged in the reaction cavity, and each stirrer is electrically connected with the controller. So that the regenerant is fully contacted and reacted with the magnetic substance, thereby being beneficial to improving the reaction effect and efficiency.

In order to solve the problem that the main conveying channel can be sequentially and circularly communicated with each reaction cavity, the invention also provides a method for preparing the reaction cavity by using the main conveying channel, wherein in some schemes, the feeding device is provided with at least two discharge holes, the number of the discharge holes is matched with that of the reaction cavities, each discharge hole is respectively communicated with the main conveying channel, each discharge hole is respectively arranged at a position communicated with each reaction cavity,

The action mechanism is a plurality of feeding on-off devices configured on the feeding device, each feeding on-off device is respectively and electrically connected with the controller, and the controller respectively controls the on-off state of each discharging hole through each feeding on-off device. Therefore, each discharge port can be communicated with the corresponding reaction cavity sequentially and circularly, and the purpose of continuously conveying magnetic substances is achieved.

Preferably, the feeding device further comprises at least two sub-conveying channels, one end of each sub-conveying channel is connected to the main conveying channel, the other end of each sub-conveying channel is respectively provided with a discharging hole, and each feeding on-off device is respectively arranged in each sub-conveying channel. When the automatic feeding device is used, the controller can be used for controlling the on-off of each feeding on-off device, so that the aim of controlling the on-off of each sub-conveying channel is fulfilled.

In order to solve the problem of dosing the regenerant, in some embodiments, the regenerant dosing device comprises a container for configuring and/or storing the regenerant,

a main feeding channel communicated with the container and matched with the reaction cavity for outputting the regenerant, and

the feeding pump is communicated with the main feeding channel, is electrically connected with the controller and quantitatively outputs the regenerant under the control of the controller. The aim of quantitatively conveying the regenerant into the reaction cavity can be achieved by controlling the feeding pump through the controller.

In order to solve the problem of sequentially and circularly adding the regenerant, in some schemes, the regenerant adding device further comprises at least two sub adding channels, one end of each sub adding channel is respectively connected with the main adding channel, the other end of each sub adding channel is respectively communicated with each reaction cavity, each sub adding channel is respectively provided with an administration on-off device, and a controller is respectively electrically connected with each administration on-off device and used for controlling the on-off of each administration on-off device. So as to sequentially and circularly add the regenerant into each reaction cavity.

In order to discharge the reacted material in the reaction chamber, in some embodiments, the discharge mechanism includes a sub-discharge channel in communication with the reaction chamber, and

the emission on-off device is electrically connected with the controller, and the controller controls each sub-emission channel to be sequentially and circularly connected and disconnected through each emission on-off device. Thereby achieving the purpose of sequentially and circularly evacuating each reaction cavity.

In order to solve the problem that the main conveying channel is sequentially and circularly communicated with each reaction cavity, in some schemes, the actuating mechanism is arranged on the feeding device and is in transmission connection with the main conveying channel, the actuating mechanism is used for adjusting the position of the discharge hole,

each reaction cavity is respectively arranged according to a set rule and matched with the discharge hole,

The controller enables the discharge port to be communicated with each reaction cavity sequentially and circularly by adjusting the position of the discharge port. In this scheme, the position of each reaction chamber is fixed unchangeable, and the position of discharge gate can change through actuating mechanism to make the discharge gate can be in proper order, the circulation is linked together with each reaction chamber under the control of controller, solves the problem of continuous operation.

Preferably, the actuating mechanism is used for driving the discharge port to linearly actuate, and each reaction cavity is respectively arranged along a straight line and positioned on the actuating path of the discharge port.

Preferably, the actuating mechanism is a linear module, an air cylinder, an electric push rod or a hydraulic cylinder. So as to adjust the position of the discharge opening in a straight line direction.

In order to solve the problem of sequential and cyclic feeding of the regenerant, in some schemes, the regenerant feeding device comprises a container for configuring and/or storing the regenerant, a main feeding channel for outputting the regenerant and a feeding pump, wherein the main feeding channel is communicated with the container and matched with a reaction cavity, and the feeding pump is communicated with the main feeding channel and is electrically connected with a controller for quantitatively outputting the regenerant under the control of the controller;

the device also comprises at least two sub-dosing channels, wherein one end of each sub-dosing channel is respectively communicated with the main dosing channel, the other end of each sub-dosing channel is respectively communicated with each reaction cavity, each sub-dosing channel is respectively provided with a dosing on-off device, and a controller is respectively electrically connected with each dosing on-off device and used for controlling the on-off of each dosing on-off device;

Or the action mechanism is in transmission connection with the main feeding channel and used for adjusting the position of the main feeding channel, and the controller enables the main feeding channel to be communicated with each reaction cavity sequentially and circularly by adjusting the position of the main feeding channel.

In order to solve the problem that the main conveying channel is sequentially and circularly communicated with each reaction cavity, in some schemes, the regeneration reaction device is movably restrained on the base, the action mechanism is in transmission connection with the regeneration reaction device and is used for driving the regeneration reaction device to act relative to the base,

the discharge port is arranged at a fixed position and is positioned on the action path of each reaction cavity,

the controller enables each reaction cavity to be communicated with each discharge hole sequentially and circularly by adjusting the position of each reaction cavity. In this scheme, the position of each reaction chamber is changeable, and the position of discharge gate is fixed in the feed arrangement to can make each reaction chamber communicate with the discharge gate in proper order through adjusting the position of each reaction chamber, solve the problem of continuous operation.

Preferably, the regeneration reaction device is movably restrained on the base, each reaction cavity is linearly arranged, and the action mechanism adopts a linear module or a telescopic device. The actuating mechanism can drive each reaction cavity to linearly move so as to adjust the position of each reaction cavity along the linear direction, and the reaction cavities can be matched with the discharge ports.

Preferably, the regeneration reaction device is rotatably constrained on the base, each reaction cavity is respectively arranged along the circumferential direction of the rotation center of the regeneration reaction device, the action mechanism comprises a motor, the motor is connected with the regeneration reaction device in a transmission way, and the motor is electrically connected with the controller. The action mechanism can drive each reaction cavity to rotate under the control of the controller so as to adjust the position of each reaction cavity along the circumferential direction, and each reaction cavity can be aligned with the discharge hole in turn and form a fit.

In order to solve the problem of adding the regenerant sequentially and circularly, in the scheme one, the regenerant adding device is connected with the regeneration reaction device, the action mechanism is used for driving the regenerant adding device and the regeneration reaction device to synchronously act,

the regeneration agent adding device comprises a container for configuring and/or storing the regeneration agent, a main adding channel for outputting the regeneration agent, an adding pump and at least two sub adding channels, wherein the main adding channel is communicated with the container, the container is connected with the regeneration reaction device, one end of each sub adding channel is respectively communicated with the main adding channel, the other end of each sub adding channel is respectively communicated with each reaction cavity, each sub adding channel is respectively provided with an administration on-off device, a controller is respectively electrically connected with each administration on-off device and used for controlling the on-off of each administration on-off device, and the adding pump is electrically connected with the main adding channel and used for quantitatively outputting the regeneration agent under the control of the controller. In the scheme, the regenerant adding device and the regeneration reaction device are connected together and can synchronously act, so that the relative positions of the regenerant adding device and each reaction cavity are unchanged, and the regenerant can be circularly and continuously added by controlling each dosing on-off device through the controller.

In the second scheme, the regenerant adding device comprises a container for configuring and/or storing the regenerant, a main adding channel for outputting the regenerant and an adding pump, wherein the main adding channel is communicated with the container, the adding pump is communicated with the main adding channel and is electrically connected with the controller for quantitatively outputting the regenerant under the control of the controller,

the outlet of the main feeding channel is arranged at a fixed position and is positioned on the action path of each reaction cavity, and the controller adjusts the position of each reaction cavity through the action mechanism so that each reaction cavity is sequentially and circularly communicated with the main feeding channel.

In order to solve the problem of the discharge of each reaction cavity, preferably, a receiving container is arranged below the regeneration reaction device, each sub-discharge channel always corresponds to the receiving container in the process of the action of the regeneration agent adding device, the receiving container is used for receiving the substances discharged by each reaction cavity,

the receiving container is in communication with the main discharge passage. So as to uniformly discharge the regenerant downstream through the main discharge channel, the design can solve the problem that the position parts of the reaction chambers are fixed due to the action of the regenerant feeding device, so that the uniform discharge is inconvenient.

The fifth aspect of the present invention solves the problem of obtaining a purer magnetic medium, and further comprises a secondary magnetic recovery device, wherein the secondary magnetic recovery device is arranged at the downstream of the regeneration reaction device and is communicated with the discharge mechanism, and the secondary magnetic recovery device is used for adsorbing and separating the magnetic medium in the mixture through magnetic force. On one hand, the two-stage magnetic recovery device is configured to be matched with the one-stage magnetic recovery device to realize two-stage magnetic recovery, and on the other hand, the pure magnetic medium with an adsorption function can be obtained, so that the influence of regenerated liquid, residual regenerant and the like can be eliminated when the magnetic medium is refluxed, new pollutants can not be introduced into the wastewater, and the amount of the refluxed magnetic medium is controlled accurately due to the fact that the magnetic medium is refluxed, and the water outlet effect is improved.

In order to solve the problem of improving the separation effect, a flocculation removing machine is further arranged between the regeneration reaction device and the secondary magnetic recovery device, and the flocculation removing machine is communicated with the reaction cavity through a discharge mechanism and is communicated with the secondary magnetic recovery device. The mixture can be further dispersed by using the deflocculating machine, so that magnetic media in the mixture are separated more thoroughly, and the purpose of improving the separation effect is achieved.

Further, a third cavity is further arranged at the downstream of the secondary magnetic recovery device and is communicated with the secondary magnetic recovery device and used for storing the magnetic medium separated from the secondary magnetic recovery device. The stability of the system is improved, and the system is suitable for different working conditions.

In order to solve the problem of automatic continuous operation, the device further comprises a monitoring module, wherein the monitoring module is electrically connected with the controller and used for monitoring the amount of the magnetic substance in the reaction cavity, and when the monitoring module monitors that the amount of the magnetic substance in the reaction cavity reaches a set threshold value, the controller controls the feeding device to stop conveying the magnetic substance to the reaction cavity and controls the feeding device to convey the magnetic substance to another reaction cavity. Thereby realizing continuous carrying and conveying of the magnetic substance.

A method for continuously reducing and regenerating magnetic adsorbent includes continuously delivering magnetic substance to the first reaction cavity by feeder, synchronously adding the quantitatively adaptive magnetic medium to the reaction cavity by regenerant feeder, real-time monitoring if the magnetic substance in the reaction cavity reaches a threshold value,

when the set threshold value is not reached, the magnetic substance and the regenerant are continuously conveyed into the reaction cavity by using the feeding device and the regenerant feeding device,

when the set threshold value is reached, stopping the magnetic substance and the regenerant from being conveyed to the reaction cavity, starting to continuously convey the magnetic substance to the second reaction cavity by using the feeding device, synchronously adding the regenerant to the second reaction cavity by using the regenerant adding device,

monitoring the time period after the first reaction chamber is stopped, discharging the mixture after the reaction in the reaction chamber through a discharging mechanism when the time period reaches the preset time period,

and so on. The magnetic adsorbent can be continuously reduced and regenerated, and the efficiency is very high.

The sewage treatment system adopts a magnetic adsorbent with an adsorption function as a magnetic medium, comprises a regeneration circulation system, an adsorption reaction box, a magnetic coagulation reaction device arranged at the downstream of the adsorption reaction box and a magnetic separation device arranged at the downstream of the magnetic coagulation reaction device and used for separating magnetic sludge in sewage,

A sludge discharge port used for discharging magnetic sludge in the magnetic separation equipment is communicated with a main conveying channel in the feeding device,

the discharge mechanism is communicated with the upstream of the adsorption reaction box or the adsorption reaction box. Through the cooperation of the regeneration circulation system and the existing sewage treatment system, not only can the insoluble index in the wastewater be effectively removed, but also part of the soluble index can be effectively removed, and the regeneration circulation system is not required to be matched with the existing biochemical process, so that the defects of the existing biochemical process can be effectively overcome.

A sewage treatment process adopts the sewage treatment system and adopts a magnetic adsorbent with an adsorption function as a magnetic medium, the process comprises,

step 1, fully mixing the wastewater and a magnetic medium in an adsorption reaction box to adsorb at least one solubility index in the wastewater by using the magnetic medium;

step 2, inputting the wastewater into a magnetic coagulation reaction device, and adding a coagulant and a flocculant into the magnetic coagulation reaction device so as to enable magnetic media and pollutants to form magnetic flocs, and enabling the magnetic media and pollutants to enter subsequent magnetic separation equipment along the wastewater;

step 3, magnetic floccules in the wastewater are separated by utilizing magnetic separation equipment to form magnetic sludge, and the magnetic sludge is discharged through a sludge discharge port of the magnetic separation equipment and sequentially input into each reaction cavity through a feeding device;

Step 4, adding a regenerant which is quantitatively matched with the magnetic adsorbent into the reaction cavity so as to reduce and regenerate the magnetic adsorbent by using the regenerant;

and 5, quantitatively refluxing the regenerated magnetic adsorbent to the upstream of the adsorption reaction box or the adsorption reaction box through a reflux pump so as to recycle the magnetic adsorbent. By adopting the process, not only can the non-solubility index in the wastewater be effectively removed, but also part of the solubility index can be effectively removed, the process does not need to be matched with the existing biochemical process, and the magnetic adsorbent can be regenerated and recycled, so that the problems of regeneration and recycling of the magnetic adsorbent can be solved, and the wastewater can be purified better, more efficiently and economically.

Compared with the prior art, the regeneration circulation system, the sewage treatment system, the method and the process provided by the invention have good universality, can continuously run, can efficiently reduce and regenerate the magnetic adsorbent capable of adsorbing the solubility index, and can remarkably improve the recovery efficiency of the magnetic adsorbent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a first regenerative cycle system according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a second regenerative cycle system according to embodiment 1 of the present invention.

Fig. 3 is a partial top view of a first regenerative cycle system according to embodiment 2 of the present invention.

Fig. 4 is a second partial plan view of the first regenerative cycle system according to embodiment 2 of the present invention.

Fig. 5 is a partial plan view of a second regenerative cycle system according to embodiment 2 of the present invention.

Fig. 6 is a partial plan view of a first regenerative cycle system according to embodiment 3 of the present invention.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a partial plan view of a second regenerative cycle system according to embodiment 3 of the present invention.

Fig. 9 is a left side view of fig. 8.

Fig. 10 is a schematic structural diagram of a primary magnetic recovery device in a regenerative cycle system according to embodiment 4 of the present invention.

Fig. 11 is a schematic structural diagram of a regeneration circulation system according to embodiment 5 of the present invention.

Fig. 12 is a schematic structural diagram of a sewage treatment system according to embodiment 6 of the present invention.

Description of the drawings

Regeneration reactor 100, regeneration reactor 101, reaction chamber 102, and stirrer 103

Main conveying channel 201, feeding on-off device 202, conveying pump 203, sub conveying channel 204 and discharging hole 205

Sub-discharge passage 301, discharge pump 302, discharge on-off device 303, main discharge passage 304

A container 401, a main feeding channel 402, a medicine feeding on-off device 403, a feeding pump 404 and a sub-feeding channel 405

Primary magnetic recovery device 500, housing 501, first chamber 502, first outlet 503, motor 504, magnetic drum 505, doctor mechanism 506, second chamber 507, deflocculating machine 508, pipeline 509

Cylinder 600, shelf 601

Base 701, receiving container 702, guide rail 703, slider 704, rotating shaft 705, driving gear 706, driven gear 707, and bearing 708

Second-stage magnetic recovery device 801, third chamber 802, return line 803, and return pump 804

An adsorption reaction tank 901, a magnetic coagulation reaction device 902 and a magnetic separation device 903.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

Example 1

In this embodiment, for convenience of description, a regeneration circulation system suitable for a magnetic adsorbent having an adsorption function is provided, and recovery, regeneration and recycling of the magnetic adsorbent can be achieved ₂ Al ₂ Si ₂ O ₈ ·nH ₂ Porous support of O and SmCo existing in pores of the porous support ₅ Particles and Fe ₃ O ₄ Particles, wherein n is greater than or equal to 0 and SmCo ₅ ：Fe ₃ O ₄ : the mass percentage of the carrier is 0.4-10 percent, 30-50 percent and 50-70 percent; the pore diameter of the pores is 0.35-0.45 nm), and a magnetic adsorbent having a COD adsorption function (for example, fe ₃ O ₄ @ chitin N-deacetylation), etc.) as a magnetic medium, the present regeneration circulation system specifically includes a regeneration reaction device 100, a feeding device, a controller, and an action mechanism, wherein,

as shown in fig. 1, the regeneration reaction device 100 includes at least two reaction chambers 102, each reaction chamber 102 is used for providing a reaction site of a regenerant, each reaction chamber 102 is respectively provided with a discharge mechanism communicated with the reaction chamber 102, and each discharge mechanism is used for discharging a substance reacted in the corresponding reaction chamber 102.

In this embodiment, the feeding device includes a main conveying channel 201 and at least one discharge port 205, where each discharge port 205 is respectively connected to the main conveying channel 201, as shown in fig. 1, the discharge port 205 may be matched with each reaction chamber 102, and the main conveying channel 201 is used to receive and convey the magnetic substance conveyed out from the upstream, and make the magnetic substance input into each reaction chamber 102 through the discharge port 205, so that the magnetic substance respectively reacts with the regenerant in each reaction chamber 102, and regeneration of the magnetic medium is achieved. In practice, as shown in fig. 1 and 2, the main conveying channel 201 may be in communication with the upstream magnetic substance so as to convey the magnetic substance; the magnetic substance generally includes a magnetic medium after adsorbing the substance (such as a magnetic medium after adsorbing ammonia nitrogen), and generally includes a magnetic medium which does not adsorb the substance and has an adsorption function, and may even include a part of sludge or the like.

In this embodiment, the controller is electrically connected to the actuating mechanism, and the controller can control the discharge port 205 to be sequentially and circularly communicated with each reaction chamber 102 through the actuating mechanism, so that the main conveying channel 201 can be sequentially and circularly communicated with each reaction chamber 102, and the upstream magnetic substance is guided to be sequentially and circularly input into each reaction chamber 102 by using the feeding device, so that continuous conveying and regeneration of the magnetic substance can be realized.

Meanwhile, in this embodiment, the controller is electrically connected to each of the discharging mechanisms, so that the controller may further control each of the discharging mechanisms to sequentially and circularly discharge the reacted substances (usually, a mixture) in each of the reaction chambers 102, so as to sequentially empty the reaction chambers 102 after the reaction is completed, and thus the reaction chambers 102 after the reaction is emptied may be recycled. In actual operation, the feeding device and the discharging mechanism can be mutually matched under the control of the controller, so that each reaction cavity 102 can receive upstream magnetic substances in turn, the conveying process of the magnetic substances is not required to be stopped, continuous operation can be realized, and the regeneration efficiency of the magnetic medium can be remarkably improved. Meanwhile, each reaction cavity 102 can react in turn, and can be automatically discharged downstream under the control of the controller after the reaction is completed, the whole process is continuous and smooth, and therefore continuous conveying, regeneration and discharge of magnetic substances can be realized.

In the implementation, the controller may preferably adopt a PLC, a single chip microcomputer, etc., and of course, a PC, an embedded chip, etc. may also be adopted.

More specifically, the main conveying channel 201 may be a conveying pipe, a conveying tank, a channel, etc., as shown in fig. 1 and 2, the feeding device further includes a conveying pump 203, as shown in fig. 1 and 2, the conveying pump 203 may be disposed in the main conveying channel 201, so that the magnetic substance is input into the reaction chamber 102 by the conveying pump 203; the transfer pump 203 may be electrically connected to a controller to control the start and stop of the transfer pump 203, the transfer power, etc. with the controller.

To form the reaction chambers 102, in one embodiment, the regeneration reaction device 100 may include a regeneration reactor 101, and each reaction chamber 102 may be separately configured in the regeneration reactor 101. In another embodiment, the regeneration reaction device 100 may include at least two regeneration reactors 101, and each reaction chamber 102 may be respectively configured in each regeneration reactor 101, as shown in fig. 1 and 2, in this embodiment, the regeneration reactors 101 are installed at fixed positions, such as the regeneration reactors 101 may be installed on the ground, and the regeneration reactors 101 are configured with openings so as to communicate with the discharge ports 205, as shown in fig. 1 and 2, for example, the openings are configured at the upper ends of the regeneration reactors 101. In a more complete embodiment, the regeneration reaction device 100 further includes a stirrer 103 disposed in the reaction chamber 102, as shown in fig. 1 and 2, the stirrer 103 may be electrically connected to a controller, so that the regenerant is fully contacted with the magnetic substance and reacts with the magnetic substance, which is beneficial to improving the reaction effect and efficiency.

To enable the feeding device to sequentially and circularly communicate with each reaction chamber 102, for example, in the present embodiment, the feeding device is configured with at least two discharge ports 205, and each discharge port 205 is respectively communicated with the main conveying channel 201, for example, the number of discharge ports 205 may be the same as the number of reaction chambers 102; and each of the discharge ports 205 is disposed at a position communicating with each of the reaction chambers 102, i.e., each of the discharge ports 205 communicates with each of the reaction chambers 102, as shown in fig. 1 and 2.

In this embodiment, the actuating mechanism may be configured in the feeding device, and is used for controlling the on-off of each discharge port 205, so that the controller may adjust the on-off state of each discharge port 205 through the actuating mechanism, so that each discharge port 205 may be sequentially and circularly communicated with the corresponding reaction cavity 102, thereby achieving the purpose of continuously conveying the magnetic substance. For example, in the first embodiment, the feeding device further includes at least two sub-conveying paths 204, and one end of each sub-conveying path 204 is connected to the main conveying path 201, as shown in fig. 1; the other end of each sub-conveying channel 204 is respectively provided with a discharge hole 205, and each discharge hole 205 is respectively communicated with each reaction cavity 102; the actuating mechanism may be a feed on-off device 202 disposed in each sub-conveying channel 204, and as shown in fig. 1, each feed on-off device 202 is electrically connected to a controller. When in use, the controller can be used for controlling the on-off of each feeding on-off device 202, thereby achieving the purpose of controlling the on-off of each sub-conveying channel 204 so as to control whether to continuously convey magnetic substances into the corresponding reaction cavity 102. In practice, the feed on-off 202 may be a valve, gate, etc., and the sub-feed channels 204 may be pipes, tanks, channels, etc.

In the second embodiment, the main conveying channel 201 of the feeding device is configured with at least two discharge ports 205, as shown in fig. 2, each discharge port 205 corresponds to each reaction chamber 102, each discharge port 205 is respectively provided with a feeding on-off device 202, each feeding on-off device 202 is electrically connected with a controller, and in use, the controller can control on-off of each feeding on-off device 202 so as to control the magnetic substance to be discharged from different discharge ports 205 and enter corresponding reaction chambers 102.

In order to discharge the reacted substances (usually a mixture, and usually including the reduced magnetic medium, the remaining regenerant, the regenerated liquid generated by the reaction, and the like, which will not be described in detail later) in the reaction chamber 102, in this embodiment, the discharge mechanism includes various embodiments, for example, the discharge mechanism includes a sub-discharge channel 301 and a discharge pump 302, one end of the sub-discharge channel 301 may be communicated with the bottom of the reaction chamber 102 via the upper portion of the reaction chamber 102, the discharge pump 302 is disposed in the sub-discharge channel 301, and the discharge pump 302 is electrically connected with the controller, so that the substances in each reaction chamber 102 can be transported out by using the discharge power provided by the discharge pump 302, as shown in fig. 1 and 2, so as to achieve the purpose of discharging the reaction chamber 102. For another example, the bottom of each reaction chamber 102 is configured with a discharge port, the discharge mechanism includes a discharge on-off device 303 and a sub-discharge channel 301 connected to the discharge port, the discharge on-off device 303 is used for controlling the on-off of the discharge port, in implementation, the discharge on-off device 303 may be disposed at the discharge port or may be disposed at the sub-discharge channel 301, as shown in fig. 1 and fig. 2, each discharge on-off device 303 is electrically connected to a controller, when the reaction in the reaction chamber 102 is completed, the controller may open the discharge port through the discharge on-off device 303 so as to discharge the substances in the reaction chamber 102 downstream by using gravity, so as to empty the reaction chamber 102, and after the emptying, the controller may close the discharge port through the discharge on-off device 303 so as to continuously convey the magnetic substances into the reaction chamber 102, so that the next regeneration and discharge cycle process can be entered, and the regeneration and discharge work of the magnetic medium can be continuously completed, so as to realize the subsequent cyclic utilization of the regenerated magnetic medium. Of course, in this embodiment, the sub-discharge passage 301 may also be provided with a discharge pump 302 so as to supply discharge power by the discharge pump 302 without the aid of gravity. In a more sophisticated version, the main discharge channel 304 is further included, and as shown in fig. 1 and 2, the sub-discharge channels 301 of each discharge mechanism may be respectively communicated with the main discharge channel 304, so as to realize unified discharge by utilizing unified backward conveying of the main discharge channel 304.

In order to facilitate the respective addition of the regenerant into each reaction chamber 102, the regeneration circulation system further comprises a regenerant addition device, wherein the regenerant addition device is matched with each reaction chamber 102 and is used for adding a proper amount of regenerant which is matched with the magnetic medium into each reaction chamber 102, so that the regenerant can fully react with the magnetic substances in the reaction chambers 102 to reduce and/or regenerate the magnetic medium, and the subsequent recycling of the magnetic medium is facilitated. As an example, in this embodiment, the regenerant feeding device includes a container 401 for configuring and/or storing the regenerant, a main feeding channel 402 for outputting the regenerant, and at least two sub feeding channels 405, where the main feeding channel 402 is connected to the container 401, one end of each sub feeding channel 405 is connected to the main feeding channel 402, the other end of each sub feeding channel 405 is connected to each reaction chamber 102, and each sub feeding channel 405 is provided with a dosing on-off device 403, as shown in fig. 1 and 2, each dosing on-off device 403 is electrically connected to a controller, so that the controller can control on-off of each sub feeding channel 405 through each dosing on-off device 403, so as to control each sub feeding channel 405 to be sequentially and circularly connected to each reaction chamber 102 for continuous and uninterrupted feeding of the regenerant. In one embodiment, the vessel 401 may be positioned above each reaction chamber 102 to utilize the difference in gravity to power the entry of the regenerant into each reaction chamber 102. In another embodiment, the regenerant adding device further includes an adding pump 404, where the adding pump 404 may be disposed in the main adding channel 402, as shown in fig. 1 and 2, the adding pump 404 may provide power for conveying the regenerant, and in implementation, the adding pump 404 may be electrically connected to a controller, so as to control the start and stop of the adding pump 404, the running power, and the like by using the controller.

In order to judge whether the amount of the magnetic substance received in the reaction cavity 102 reaches the set threshold value, the system further comprises a monitoring module, wherein the monitoring module is electrically connected with the controller and is used for monitoring the amount of the magnetic substance in the reaction cavity 102, and when the monitoring module monitors that the amount of the magnetic substance in the reaction cavity 102 reaches the set threshold value, the controller can control the feeding device to stop conveying the magnetic substance to the reaction cavity 102 and control the feeding device to convey the magnetic substance to the other reaction cavity 102, so that the purpose of continuous operation is achieved through the mode of alternately receiving the magnetic substance. The monitoring module has various embodiments, for example, the monitoring module may include a flow meter disposed in the main conveying channel 201, the flow meter is electrically connected to the controller, the flow meter is used for monitoring the flow rate of the main conveying channel 201, and the controller can calculate the amount of the magnetic substance in the reaction chamber 102 according to the opening time of the feed on-off device 202 corresponding to the reaction chamber 102 and the flow data fed back by the flow meter. For another example, the monitoring module may further include a sensor disposed in each reaction chamber 102, the controller is electrically connected to the sensor, the sensor may be used to monitor an amount of magnetic substance in each reaction chamber 102, and when the monitoring module is implemented, the sensor may preferably use a liquid level sensor, the liquid level sensor may monitor a liquid level height of the magnetic substance in each reaction chamber 102, the controller may calculate an amount of the magnetic substance in the corresponding reaction chamber 102 according to the liquid level height fed back by the sensor, and when the liquid level in the reaction chamber 102 reaches a set height (threshold), the controller controls the feed on-off device 202 corresponding to the reaction chamber 102 to be turned off, and may control the feed on-off device 202 corresponding to another reaction chamber 102 (the reactor is in an empty state) to be turned on, so that the magnetic substance may be continuously input into the reaction chamber 102, and thus the circulation may be implemented, so as to realize continuous operation. It will be appreciated that the sensor may also employ a pressure sensor to detect the amount of magnetic material within the reaction chamber 102 by detecting the pressure at the bottom of the reaction chamber 102. In addition, the monitoring module may further include a timer electrically connected to the controller, so that the timer can control the time sequence, for example, when the feed on-off device 202 is turned on, the timer can start counting, when the preset time period is reached, the amount of the magnetic substance in the reaction chamber 102 just reaches the threshold value, at this time, the controller can control the current feed on-off device 202 to be turned off, and control the other feed on-off device 202 to be turned on, so that the cycle can also realize continuous operation. In addition, the timing control can be realized with the aid of a timer by adding the regenerant, switching the state of the discharging mechanism and the like, and the details are not repeated here.

One mode of operation of the system is: initially, each of the discharge mechanisms is in a closed state, and the controller controls one of the feed on-off devices 202 to be opened so as to input magnetic substances into the first reaction chamber 102; when the monitoring module monitors that the amount of the magnetic substance in the reaction chamber 102 reaches the set threshold, the controller controls the feed on-off device 202 corresponding to the reaction chamber 102 to be closed, and controls the feed on-off device 202 corresponding to the second reaction chamber 102 to be opened, so as to continuously convey and receive the magnetic medium. Meanwhile, the controller can control the regenerant adding device to add a proper amount of regenerant to the first reaction cavity 102, and control the stirrer 103 to start, so that the magnetic substance and the regenerant can fully contact and react, and it can be understood that the adding time of the regenerant can be determined according to actual requirements, and the required amount of regenerant can be added into the reaction cavity 102 at one time by utilizing the regenerant adding device before the magnetic substance is added into the reaction cavity 102; the required amount of regenerant can also be added into the reaction cavity 102 once after the feed on-off device 202 is closed; the regenerant can be synchronously added into the reaction cavity 102 in the process of inputting the magnetic substances into the reaction cavity 102, and the mode is beneficial to shortening the time and improving the efficiency. After the addition of the regenerant is finished, a set time period can be reserved, so that the regenerant in the reaction cavity 102 and the magnetic substance can fully react, and then the controller can control a discharge mechanism communicated with the reaction cavity 102 to be opened so as to empty the reaction cavity 102; and finally, the controller can control the discharge mechanism to be closed, so that the circulation is realized in the process of completing the regeneration and discharge of the primary magnetic medium, and the continuous operation can be realized by continuously realizing the regeneration and discharge of the magnetic medium.

In addition, based on the regeneration circulation system provided in this embodiment, this embodiment also provides a method for continuously reducing and regenerating a magnetic adsorbent, with the regeneration circulation system, the method includes continuously conveying a magnetic substance to a first reaction chamber 102 (i.e. one of the reaction chambers 102) by using a feeding device, synchronously adding a regeneration agent with a quantitative adaptation to a magnetic medium to the reaction chamber 102 by using a regeneration agent adding device, so as to reduce and regenerate the magnetic adsorbent, and simultaneously, using a monitoring module to monitor in real time whether the amount of the magnetic substance in the reaction chamber 102 reaches a set threshold value,

in the operation process, when the amount of the magnetic substance in the reaction cavity 102 does not reach the set threshold value, the magnetic substance and the regenerant are continuously conveyed into the reaction cavity 102 by using the feeding device and the regenerant feeding device.

When the amount of the magnetic substance in the reaction chamber 102 reaches the set threshold, the feeding of the magnetic substance and the regenerant to the reaction chamber 102 is stopped, and the feeding device is used for continuously feeding the magnetic substance to the second reaction chamber 102 (i.e. the other reaction chamber 102), and the regenerant is synchronously fed into the second reaction chamber 102 by the regenerant feeding device, so that the continuous receiving and regeneration of the magnetic substance are realized.

Meanwhile, the time period after the first reaction chamber 102 stops adding the regenerant can be monitored, for example, a timer can be used for timing, and when the time period reaches the preset time period, the mixture after the reaction in the reaction chamber 102 can be discharged through a discharge mechanism, so that the purpose of automatic and continuous discharge is achieved.

And so on. The magnetic adsorbent can be continuously reduced and regenerated.

Example 2

Embodiment 2 differs from embodiment 1 described above in that the actuating mechanism in the regeneration circulation system is different, specifically, in this embodiment, the actuating mechanism may be configured in the feeding device, and the feeding device is configured with one discharge port 205, the discharge port 205 is communicated with the main conveying channel 201, each reaction chamber 102 may be respectively arranged according to a set rule, the actuating mechanism is in transmission connection with the main conveying channel 201, the controller is electrically connected with the actuating mechanism, and the controller adjusts the position of the discharge port 205 through the actuating mechanism, so that the discharge port 205 is sequentially circulated and communicated with each reaction chamber 102. That is, in this embodiment, the positions of the reaction chambers 102 are fixed, and the positions of the discharge ports 205 are changeable, so that the discharge ports 205 can be sequentially and cyclically communicated with the reaction chambers 102 under the driving of the actuating mechanism.

In practice, the reaction chambers 102 may be arranged in a linear or arcuate configuration, as shown in fig. 3 and 4, and the reaction chambers 102 may be aligned to mate with the discharge port 205. The discharge port 205 may be configured at one end of the main conveying path 201, and at least part of the main conveying path 201 adopts a hose, or a section of hose is provided in the main conveying path 201, so that one end of the main conveying path 201 with the discharge port 205 configured therein may form a free end, for example, as shown in fig. 3 and 4, a portion of the main conveying path 201 between the conveying pump 203 and the discharge port 205 may adopt a hose, so as to adjust the position of the discharge port 205 by using an actuating mechanism. In this embodiment, one end of the main conveying channel 201 may be fixed to an actuating mechanism, where the actuating mechanism has various embodiments, for example, the actuating mechanism may be an existing linear module, the linear module may be mounted on a stand 601, one end (i.e., a free end) of the main conveying channel 201 may be fixedly connected to a sliding table in the linear module, and the linear module is electrically connected to a controller, so as to drive the sliding table to move under the control of the controller, thereby driving the main conveying channel 201 to move, and further changing the position of the discharge port 205, so that the discharge port 205 may move above each reaction chamber 102, so as to achieve the purpose of sequentially and circularly communicating with each reaction chamber 102.

For another example, the actuating mechanism may be a telescopic device such as an air cylinder 600, an electric push rod, a hydraulic cylinder, etc., for example, each reaction chamber 102 may be arranged in a row, the actuating mechanism is an air cylinder 600, a cylinder body of the air cylinder 600 may be fixed on a frame 601, one end (i.e. a free end) of the main conveying channel 201 is fixedly connected to a piston rod of the air cylinder 600, as shown in fig. 3 and fig. 4, a controller is electrically connected with the air cylinder 600 (actually, the control valve is electrically connected with an air pipe, and the air pipe is communicated with the air cylinder 600 and the air source), so that the controller is used for controlling the extension/retraction of the air cylinder 600 to drive the main conveying channel 201 to move, thereby changing the position of the discharge hole 205, so that the discharge hole 205 may move to the upper portion of each reaction chamber 102, thereby achieving the purpose of sequentially and circularly communicating with each reaction chamber 102.

In addition, the actuating mechanism may be an existing crank-rocker mechanism or the like, and is not illustrated here.

In this embodiment, the discharging mechanism, the regenerant adding device, the monitoring module and the like may be the same as those in embodiment 1, as shown in fig. 3 or fig. 4, and will not be described again here. In addition, in this embodiment, another regenerant feeding device may be used, for example, the regenerant feeding device may only include the main feeding channel 402, and not include the sub feeding channel 405, at this time, one end of the main feeding channel 402 is connected with the container 401 of the regenerant feeding device, and the other end may be fixed to the actuating mechanism, as shown in fig. 5, as one end of the main feeding channel 402 may be fixed to a sliding table in the linear module, a telescopic rod in the cylinder 600, and the like, so that the actuating mechanism may synchronously adjust the positions of the discharge port 205 and the main feeding channel 402 under the control of the controller, so that the discharge port 205 and the main feeding channel 402 may be synchronously connected with each reaction chamber 102, so as to convey the magnetic substance and feed the regenerant into each reaction chamber 102. In practice, an actuating mechanism may be included, where the actuating mechanism may simultaneously connect the main conveying channel 201 and the main feeding channel 402 in a transmission manner, so that the main conveying channel 201 and the main feeding channel 402 are synchronously driven by using the actuating mechanism, as shown in fig. 5; two actuating mechanisms may also be included, where the two actuating mechanisms are respectively in transmission connection with the main conveying channel 201 and the main feeding channel 402, so as to respectively drive the main conveying channel 201 and the main feeding channel 402 to act.

Example 3

Embodiment 3 differs from the above embodiment in that the actuating mechanism in the regeneration cycle system is different, specifically, in this embodiment, the position of each reaction chamber 102 may be changed by the actuating mechanism, and the position of the discharge port 205 in the feeding device may be fixed, so that each reaction chamber 102 may be sequentially communicated with the discharge port 205 by adjusting the position of each reaction chamber 102.

In practice, the regeneration reaction device 100 may be movably restrained to the base 701, the base 701 may be installed on the ground, and an actuating mechanism may be provided on the base 701 and drivingly connected to the regeneration reaction device 100, the actuating mechanism being for driving the regeneration reaction device 100 to actuate relative to the base 701; meanwhile, the feeding device is provided with a discharge hole 205, the discharge hole 205 is communicated with the main conveying channel 201, and the discharge hole 205 can be arranged at a fixed position, as shown in fig. 6 and 7, and is located on the action path of each reaction cavity 102, and the controller can drive the regeneration reaction device 100 to act through the action mechanism so as to adjust the position of each reaction cavity 102, so that each reaction cavity 102 can be sequentially and circularly communicated with the discharge hole 205 of the feeding device. For example, in the first embodiment, the regeneration reaction device 100 is movably restrained to the base 701, for example, the regeneration reaction device 100 may be movably mounted to the base 701 through the cooperation of the guide rail 703 and the slide block 704, so that the actuating mechanism may drive the regeneration reaction device 100 to move linearly, at this time, the reaction chambers 102 may be arranged linearly, as shown in fig. 6 and 7, the reaction chambers 102 may be arranged in a row, and the moving direction of the regeneration reaction device 100 is consistent with the arrangement direction of the reaction chambers 102, and the discharge port 205 may be disposed at a fixed position and located on the moving path of the reaction chambers 102, so that the positions of the reaction chambers 102 may be adjusted by the actuating mechanism along a straight line, so that the reaction chambers 102 may all move to the lower portion of the discharge port 205, so as to implement sequential and cyclic communication. For achieving the linear movement, the actuating mechanism may be a conventional linear module, for example, the linear module may be mounted on the base 701, the regeneration reaction device 100 may be fixedly mounted on a sliding table in the linear module, and the linear module is electrically connected to the controller so as to drive the regeneration reaction device 100 to move linearly under the control of the controller. For another example, the actuating mechanism may be a telescopic device such as an air cylinder 600, an electric push rod, a hydraulic cylinder, etc., for example, as shown in fig. 6 and 7, the regeneration reaction device 100 may be movably mounted on the base 701 through the cooperation of the guide rail 703 and the slide block 704, the actuating mechanism may be an air cylinder 600, the cylinder body of the air cylinder 600 may be fixed on the base 701, the piston rod of the air cylinder 600 may be connected to the regeneration reaction device 100, as shown in fig. 6 and 7, the controller is electrically connected with the air cylinder 600 (actually electrically connected with a control valve, the control valve is disposed in an air pipe, and the air pipe is communicated with the air cylinder 600 and the air source), so that the air cylinder 600 is controlled to stretch/shrink by the controller to drive the regeneration reaction device 100 to linearly move, thereby changing the positions of the reaction chambers 102, so that the reaction chambers 102 may all move below the discharge port 205, and the aim of sequentially and circularly communicating with the discharge port 205 is achieved.

For another example, in the second embodiment, the regeneration reaction device 100 is rotatably restrained to the base 701, and each reaction chamber 102 may be disposed along a circumferential direction of a rotation center of the regeneration reaction device 100, for example, may be uniformly disposed, as shown in fig. 8 and 9, and the actuating mechanism is disposed on the base 701 and is in driving connection with the regeneration reaction device 100, so that the controller may drive the regeneration reaction device 100 to rotate relative to the base 701 through the actuating mechanism, so as to change a position of each reaction chamber 102; the discharge port 205 may be disposed at a fixed position and located on a moving path of each reaction chamber 102, and each reaction chamber 102 may be driven by an actuating mechanism to move below the discharge port 205, so as to implement sequential and cyclic communication. In order to realize rotatable installation of the regeneration reaction device 100, there are various embodiments, for example, a rotating shaft 705 is connected to the lower end of the regeneration reaction device 100, as shown in fig. 8 and 9, each reaction chamber 102 is respectively arranged along the circumferential direction of the rotating shaft 705, the rotating shaft 705 may be rotatably installed on the base 701 through a bearing 708 or the like, and the actuating mechanism may include a motor 504, where the motor 504 is fixed on the base 701 and is in transmission connection with the rotating shaft 705, and the motor 504 is electrically connected with the controller so as to drive the rotating shaft 705 to rotate under the control of the controller, thereby achieving the purpose of adjusting the position of each reaction chamber 102; in implementation, the motor 504 may be connected to the rotating shaft 705 through one or more of a coupling, a gear transmission mechanism, a belt transmission mechanism, etc., for example, as shown in fig. 9, the rotating shaft 705 is provided with a driven gear 707, the motor 504 is connected to the driving gear 706 in a transmission manner, and the driving gear 706 is meshed with the driven gear 707, so that the motor 504 may drive the rotating shaft 705 to rotate, thereby driving the regeneration reaction device 100 to rotate. In addition, the regeneration reaction device 100 may be configured as a revolving structure, so that the regeneration reaction device 100 itself may be connected to the base 701 through the bearing 708 without providing the rotating shaft 705, at this time, the actuating mechanism may directly drive the regeneration reaction device 100 to rotate, for example, the driven gear 707 may be directly configured or installed on the outer surface of the regeneration reaction device 100, so that the motor 504 in the actuating mechanism may drive the regeneration reaction device 100 to rotate through the engagement of the driving gear 706 and the driven gear 707.

Since the position of the regeneration reaction device 100 may be changed, in order to receive the substances discharged from the reaction chambers 102, as an example, each sub-discharge channel 301 may be a flexible tube, so that the movement of the regeneration reaction device 100 may not be affected, as another example, a receiving container 702 may be further disposed below the regeneration reaction device 100, as shown in fig. 6 to 9, the receiving container 702 may be disposed on the base 701, the receiving container 702 is used to receive and store the substances discharged from each reaction chamber 102, and the sub-discharge channels 301 communicating with each reaction chamber 102 may be aligned with the receiving container 702 below, as shown in fig. 7, so that the sub-discharge channels 301 of each reaction chamber 102 may be communicated with the receiving container 702 below no matter where the regeneration reaction device 100 is turned. As yet another example, in the case where the rotation shaft 705 is provided, the rotation shaft 705 may be configured with a central passage, and the sub-discharge passages 301 communicating with the respective reaction chambers 102 may be respectively communicated with the central passage, as shown in fig. 9, so that the substances in the respective reaction chambers 102 are discharged downstream into the lower receiving container 702 through the central passage, and since the positions of the central passage and the respective reaction chambers 102 are relatively fixed, the discharge problem during the operation of the regeneration reaction device 100 can be effectively solved, and it is understood that at this time, the main discharge passage 304 may be communicated with the receiving container 702, as shown in fig. 7 and 9, so as to uniformly discharge downstream.

The regeneration reaction device 100 has various embodiments, for example, the regeneration reaction device 100 may include one regeneration reactor 101, each reaction chamber 102 is respectively configured in the regeneration reactor 101, and for another example, the regeneration reaction device 100 may include a frame and at least two regeneration reactors 101, each regeneration reactor 101 is respectively configured with one reaction chamber 102, and each regeneration reactor 101 is respectively fixedly installed in the frame, so that each regeneration reactor 101 and the frame may be connected together for synchronous operation.

To facilitate the addition of the regenerant into the reaction chamber 102, as an example, a regenerant addition device may be connected to the regeneration reaction device 100, that is, the regenerant addition device and the regeneration reaction device 100 may be connected as a whole, for example, the regenerant addition device may have the same structure as that of the regenerant addition device provided in embodiment 1, except that in this embodiment, the container 401 of the regenerant addition device is fixedly connected to the regeneration reaction device 100 or directly configured to the regeneration reaction device 100, so that the action mechanism may drive the regenerant addition device and the regeneration reaction device 100 to act synchronously. As a second example, since the discharge port 205 in the feeding device may be disposed at a fixed position, and similarly, the outlet of the main feeding channel 402 may be disposed at a fixed position like the discharge port 205 and located on the motion path of each reaction chamber 102, so that the controller may adjust the position of each reaction chamber 102 through the motion mechanism, so that each reaction chamber 102 may be sequentially and circularly communicated with the main feeding channel 402, for example, as shown in fig. 6 and 7, the outlet of the main feeding channel 402 may be disposed at a position close to the discharge port 205, as shown in fig. 6 to 9, so as to be matched with each reaction chamber 102, and the rest of the structure of the regenerant feeding device may be the same as the previous embodiments, which are not repeated herein.

Example 4

In order to improve the regeneration efficiency and the regeneration economy, in the regeneration circulation system, a first-stage magnetic recovery device 500 is further arranged at the upstream of the feeding device, the feeding device is communicated with the first-stage magnetic recovery device 500, and the first-stage magnetic recovery device 500 is used for receiving the magnetic sludge conveyed out from the upstream and separating and recovering magnetic substances (including magnetic media) in the magnetic sludge through magnetic force. In practice, the primary magnetic recovery device 500 may employ an existing magnetic recovery device, such as an existing magnetic disk type magnetic separator or drum type magnetic separator, so as to recover magnetic substances in the magnetic sludge by using the principle of magnetic adsorption. For example, as shown in fig. 1, 2 and 10, the primary magnetic recycling apparatus 500 includes a housing 501, a motor 504 disposed on the housing 501, a magnetic drum 505, and a scraper mechanism 506 adapted to the magnetic drum 505, wherein a first cavity 502 is configured in the housing 501, the magnetic drum 505 is disposed in the first cavity 502, and a magnet is disposed in the magnetic drum 505, the motor 504 is in driving connection with the magnetic drum 505 for driving the magnetic drum 505 to rotate, so that the magnetic material in the magnetic sludge is continuously adsorbed by the rotation of the magnetic drum 505, the scraper mechanism 506 is disposed on one side of the magnetic drum 505 and cooperates with the magnetic drum 505 for scraping the magnetic material adsorbed on the magnetic drum 505, and the scraped magnetic material can enter the reaction chamber 102 through a feeding device, as shown in fig. 10; meanwhile, the housing 501 of the primary magnetic recycling apparatus 500 is further configured with a first outlet 503, and the first outlet 503 is communicated with the first cavity 502 for discharging the separated sludge, so that the magnetic substance is separated from the sludge, so that the magnetic substance and the sludge can be treated respectively later, as shown in fig. 1 and 2.

In order to facilitate the cooperation of the main conveying channel 201 and the primary magnetic recovery device 500, as shown in fig. 1-6, a second cavity 507 is further disposed upstream of the feeding device, the feeding device is communicated with the second cavity 507, the second cavity 507 is communicated with the primary magnetic recovery device 500, and the second cavity 507 is used for receiving and storing the magnetic substance separated by the primary magnetic recovery device 500. The second cavity 507 has a certain capacity so as to play a role in buffering, adjusting and preventing overflow between the reaction cavity 102 and the primary magnetic recovery device 500, so that the operation of the whole system is more stable, and the requirements of various working conditions can be met. In implementation, the second cavity 507 may be configured in a single component, where the second cavity 507 is connected to the primary magnetic recovery device 500 through a pipe 509, and the second cavity 507 may also be configured in the housing 501 of the primary magnetic recovery device 500, for example, as shown in fig. 1 and 10, the first cavity 502 and the second cavity 507 may be disposed in series, and the first cavity 502 and the second cavity 507 are mutually connected, so that the magnetic substance scraped off from the magnetic drum 505 may fall into the second cavity 507. In addition, the second cavity 507 may be further provided with a stirrer 103, as shown in fig. 1 and 10, where the stirrer 103 is used for stirring the separated magnetic substance, and of course, the stirrer 103 may be electrically connected to the controller so as to be started and stopped under the control of the controller. In implementation, one end of the main conveying channel 201 is communicated with the second cavity 507, and conveying power can be provided by using the conveying pump 203, so that magnetic substances in the second cavity 507 can be conveyed out along the main conveying channel 201, and at this time, the main conveying channel 201 can be provided with the feeding on-off device 202 or not provided with the feeding on-off device 202.

In a further scheme, the regeneration circulation system further comprises a flocculation removing machine 508, wherein the flocculation removing machine 508 is configured at the upstream of the primary magnetic recovery device 500 and is communicated with the primary magnetic recovery device 500, as shown in fig. 1 and 10, the flocculation removing machine 508 is mainly used for scattering magnetic sludge so as to realize physical crushing, is more beneficial to separating magnetic substances in the magnetic sludge in the primary magnetic recovery device 500, can remarkably improve the recovery rate of the magnetic substances in the magnetic sludge, can reduce the content of residual magnetic substances in the sludge, is beneficial to reducing the operation cost, and is beneficial to saving energy and protecting environment. In practice, the de-flocculation machine 508 may employ an existing high-speed de-flocculation machine 508, for example, the de-flocculation machine 508 includes a housing, a de-flocculation cutter head, and a motor 504, the housing is configured with a de-flocculation cavity, the de-flocculation cutter head is disposed in the de-flocculation cavity and is in transmission connection with the motor 504, and the motor 504 may be electrically connected with the controller. The de-flocculation chamber of de-flocculation machine 508 may be in communication with first chamber 502 in primary magnetic recovery device 500 via conduit 509 and may be in communication upstream via conduit 509 for the input of magnetic sludge; the deflocculating machine 508 and the first-stage magnetic recovery device 500 may also be an integrated structure, as shown in fig. 10, where the deflocculating cavity of the deflocculating machine 508 may be communicated with the first cavity 502 of the first-stage magnetic recovery device 500 through a communication hole.

Example 5

Since the substances discharged from the reaction chamber 102 are not pure magnetic media, but are a mixture containing not only the magnetic media and the regenerated liquid after reaction but also possibly the remaining regenerant and the like, if the mixture is directly recycled, not only new pollutants are introduced into the wastewater, but also the addition amount of the magnetic media cannot be precisely controlled, which is unfavorable for improving the water outlet effect. To solve this problem, this embodiment 5 is different from the above embodiments in that the regeneration circulation system further includes a secondary magnetic recovery device 801, as shown in fig. 11, the secondary magnetic recovery device 801 is disposed downstream of the regeneration reaction device 100 and is in communication with a discharge mechanism, and the secondary magnetic recovery device 801 is configured to adsorb and separate magnetic media in the mixture by magnetic force. On the other hand, by providing the secondary magnetic recovery device 801, it is possible to realize two-stage magnetic recovery by forming a cooperation with the primary magnetic recovery device 500. On the other hand, the pure magnetic medium with the adsorption function can be obtained, so that the influence of the regeneration liquid, the residual regenerant and the like can be eliminated while the magnetic medium is refluxed, new pollutants can not be introduced into the wastewater, and the amount of the refluxed magnetic medium is controlled accurately due to the fact that the magnetic medium is refluxed, and the water outlet effect is improved.

In practice, the secondary magnetic recovery device 801 may be in communication with each of the sub-discharge channels 301, respectively, for example, as shown in fig. 11, each of the sub-discharge channels 301 may be in communication (including direct communication and indirect communication) with the primary discharge channel 304, and the primary discharge channel 304 may be in communication with the secondary magnetic recovery device 801, such that the mixture discharged from each of the reaction chambers 102 may enter the secondary magnetic recovery device 801 via the corresponding sub-discharge channel 301 and primary discharge channel 304.

In practice, the structure of the secondary magnetic recovery device 801 may be the same as that of the primary magnetic recovery device 500, as shown in fig. 10 and 11, and preferably, the secondary magnetic recovery device 801 may be an existing magnetic recovery device, such as an existing magnetic disk type magnetic separator or drum type magnetic separator, so as to recover the magnetic medium in the mixture by using the principle of magnetic adsorption. For example, the secondary magnetic recycling device 801 includes a housing 501, a motor 504 disposed on the housing 501, a magnetic drum 505, and a scraper mechanism 506 adapted to the magnetic drum 505, wherein a first cavity 502 is configured in the housing 501, the magnetic drum 505 is disposed in the first cavity 502, the motor 504 is in driving connection with the magnetic drum 505 for driving the magnetic drum 505 to rotate, the scraper mechanism 506 is disposed on one side of the magnetic drum 505 and cooperates with the magnetic drum 505 for scraping off the magnetic medium adsorbed on the magnetic drum 505, and the scraped-off magnetic medium can be refluxed through a reflux pipe 803 for reuse, as shown in fig. 11. Meanwhile, the housing 501 of the secondary magnetic recovery device 801 is further configured with a first outlet 503, the first outlet 503 being in communication with the first cavity 502 for discharging the mixture after separation of the magnetic media. In a more sophisticated version, a return pump 804 is also included, as shown in fig. 11, the return pump 804 may be provided in the return conduit 803 to power the delivery of the magnetic medium. In practice, a controller may be electrically connected to the return pump 804 for controlling the return pump 804 to precisely control the amount of return of the magnetic medium.

In a more sophisticated scheme, a de-flocculation machine 508 is further arranged between the regeneration reaction device 100 and the secondary magnetic recovery device 801, as shown in fig. 11, the de-flocculation machine 508 can be communicated with the reaction cavity 102 through a discharge mechanism and is communicated with the secondary magnetic recovery device 801, so that the de-flocculation machine 508 is utilized to physically break up the mixture discharged from the reaction cavity 102, and the separation of pure magnetic medium in the secondary magnetic recovery device 801 is more facilitated. Similarly, in implementation, the deflocculating machine 508 may adopt an existing high-speed deflocculating machine 508, the deflocculating machine 508 may be communicated with each sub-discharge channel 301 in the discharge mechanism through the main discharge channel 304, the deflocculating machine 508 and the secondary magnetic recovery device 801 may also be in an integral structure, as shown in fig. 11, at this time, a deflocculating cavity of the deflocculating machine 508 may be communicated with the first cavity 502 of the secondary magnetic recovery device 801 through a communication hole, and the deflocculating cavity is communicated with the main discharge channel 304. In practice, the controller may also be electrically connected to the secondary magnetic recovery device 801 and the de-flocculation machine 508.

In addition, in a more sophisticated scheme, a third cavity 802 is further disposed downstream of the secondary magnetic recovery device 801, as shown in fig. 11, the third cavity 802 is mainly used for storing the magnetic medium separated from the secondary magnetic recovery device 801, and one end of the return conduit 803 may be in communication with the third cavity 802 so as to convey the magnetic medium. Similarly, in practice, third cavity 802 may be formed as a single component or may be formed in housing 501 of secondary magnetic recovery device 801, as shown in FIG. 11, where first cavity 502 and third cavity 802 communicate with each other such that magnetic media scraped from magnetic drum 505 may fall into third cavity 802. In addition, a stirrer 103 may be further disposed in the third cavity 802, as shown in fig. 11, where the stirrer 103 is used for stirring the separated magnetic medium, and the stirrer 103 may be electrically connected to a controller, so as to uniformly stir the magnetic medium in the third cavity 802, so as to achieve quantitative conveying and feeding.

Example 6

Embodiment 6 provides a case of using the above-mentioned regeneration circulation system in combination with a sewage treatment system using a magnetic adsorbent as a magnetic medium, and specifically shows a sewage treatment system using a magnetic adsorbent with adsorption function (e.g. a magnetic adsorbent capable of adsorbing soluble ammonia nitrogen, which comprises a chemical formula of Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ Porous support of O and SmCo existing in pores of the porous support ₅ Particles and Fe ₃ O ₄ Particles, wherein n is greater than or equal to 0 and SmCo ₅ ：Fe ₃ O ₄ : the mass percentage of the carrier is 0.4-10 percent, 30-50 percent and 50-70 percent; the pore diameter of the pore is 0.35-0.45 nm, and the magnetic adsorbent Fe can adsorb the dissolved COD ₃ O ₄ @ chitin N-deacetylation) as a magnetic medium, as shown in FIG. 12, the sewage treatment system comprises an adsorption reaction tank 901,A magnetic coagulation reaction device 902 disposed downstream of the adsorption reaction tank 901, and a magnetic separation device 903 disposed downstream of the magnetic coagulation reaction device 902 for separating magnetic sludge in sewage, wherein,

the magnetic separation device 903 may be an existing super magnetic separator so as to separate magnetic sludge in sewage by using a magnetic adsorption principle, or the magnetic separation device 903 may be an existing magnetic precipitation device so as to separate magnetic sludge in sewage by using a gravity precipitation principle. The sludge discharge port of the magnetic separation device 903 for discharging magnetic sludge is communicated with the deflocculating machine 508 at the upstream of the primary magnetic recovery device 500 in the system, while the return pipeline 803 is communicated with the upstream of the adsorption reaction tank 901 or the adsorption reaction tank 901, as shown in fig. 12, in operation, the wastewater and the magnetic medium (magnetic adsorbent with ammonia nitrogen adsorption function) are fully mixed in the adsorption reaction tank 901, and the solubility index (such as ammonia nitrogen in the wastewater) in the wastewater is adsorbed by the magnetic medium; then the wastewater is input into a magnetic coagulation reaction device 902, and coagulant and flocculant can be added into the magnetic coagulation reaction device 902 so that magnetic media and pollutants can form magnetic flocs in the wastewater and enter a subsequent magnetic separation device 903 along the wastewater; the magnetic separation device 903 can separate magnetic flocs in the wastewater to form magnetic sludge, so as to achieve the purpose of purifying the wastewater, the purified water is discharged through a water outlet of the magnetic separation device 903, and the separated magnetic sludge is discharged through a sludge discharge outlet of the magnetic separation device 903 and enters the system; then, the magnetic sludge is scattered in the deflocculating machine 508, and the first-stage magnetic recovery device 500 separates and recovers the magnetic substances in the magnetic sludge by utilizing magnetic force and stores the magnetic substances in the second cavity 507; then the magnetic substance is input into the reaction chamber 102 by the feeding device, and a proper amount of regenerant is added into the reaction chamber 102 by the regenerant adding device (for the above-mentioned composition, the chemical formula is Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ Porous support of O and SmCo existing in pores of the porous support ₅ Particles and Fe ₃ O ₄ The regenerant may be NaCl solution and/or NaOH solution for Fe as magnetic adsorbent of the particles ₃ O ₄ Chitin N @ room temperatureThe regeneration agent may be an alkaline solution, such as NaOH solution), so that the ion absorbed in the magnetic medium is exchanged (such as soluble ammonia nitrogen or soluble COD) by using the regeneration agent, thereby obtaining the magnetic medium without a solubility index, so that the magnetic medium has adsorption capacity again, the purpose of reducing and regenerating the magnetic medium is achieved, after the complete reaction, the substance (mixture) in the reaction chamber 102 is discharged into the deflocculating machine 508, and is continuously dispersed, and is discharged into the secondary magnetic recovery device 801 through the deflocculating machine 508, the magnetic medium in the substance is separated by the secondary magnetic recovery device 801, so as to obtain a pure magnetic medium, and is stored in the third cavity 802, and finally the magnetic medium can flow back to the upstream of the adsorption reaction box 901 or the adsorption reaction box 901 through the reflux pump 804, so as to realize recovery, regeneration and recycling of the magnetic adsorbent (magnetic medium) with ammonia nitrogen adsorption function. The system not only can effectively remove insoluble indexes in the wastewater, but also can effectively remove partial soluble indexes (such as ammonia nitrogen and the like), can realize the regeneration of the magnetic adsorbent, does not need to be matched with the existing biochemical process, and can effectively solve the defects existing in the combined biochemical process.

Based on the sewage treatment system provided by the embodiment, the embodiment also provides a sewage treatment process which adopts the magnetic adsorbent with the adsorption function as a magnetic medium, the process comprises,

step 1, fully mixing the wastewater and a magnetic medium in an adsorption reaction tank 901 so as to utilize the magnetic medium to adsorb at least one solubility index in the wastewater, such as ammonia nitrogen index and the like;

step 2, inputting the wastewater into a magnetic coagulation reaction device 902, and adding a coagulant and a flocculant into the magnetic coagulation reaction device 902 so that magnetic media and pollutants form magnetic flocs, and enabling the magnetic media and pollutants to enter a subsequent magnetic separation device 903 along the wastewater;

step 3, magnetic flocculation in the wastewater is separated by utilizing a magnetic separation device 903 to form magnetic sludge, and the magnetic sludge is discharged through a sludge discharge port of the magnetic separation device 903 and can be sequentially and circularly input into each reaction cavity 102 after passing through a flocculation de-machine 508, a primary magnetic recovery device 500, a second cavity 507 and a feeding device;

step 4, sequentially and circularly adding a regenerant with a quantitative adaptive magnetic adsorbent into the reaction cavity 102, reacting the regenerant with the magnetic adsorbent to reduce and regenerate the magnetic adsorbent by using the regenerant, discharging the reacted substances in the reaction cavity 102 through a discharge mechanism, scattering by a deflocculating machine 508, separating and extracting by a secondary magnetic recovery device 801 to obtain a pure magnetic adsorbent, and storing the pure magnetic adsorbent in a third cavity 802;

In addition, by adopting the process, not only can the insoluble index in the wastewater be effectively removed, but also part of the soluble index can be effectively removed, the existing biochemical process is not required to be matched, the magnetic adsorbent can be regenerated and recycled, the problems of regeneration and recycling of the magnetic adsorbent can be solved, and the wastewater can be purified better, more efficiently and more economically.

In this example, the magnetic adsorbent capable of adsorbing soluble ammonia nitrogen is a newly developed magnetic adsorbent comprising a compound of the formula Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ Porous support of O and SmCo existing in pores of the porous support ₅ Particles and Fe ₃ O ₄ Particles (abbreviated as SmCo) ₅ -Fe ₃ O ₄ /Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ O), wherein n is greater than or equal to 0 and SmCo ₅ ：Fe ₃ O ₄ : the mass percentage of the carrier is 0.4-10 percent, 30-50 percent and 50-70 percent; the aperture of the hole is 0.35-0.45 nm. The magnetic adsorbent is synthesized by utilizing iron ions and metakaolin through a hydrothermal method, and the specific preparation process comprises the steps of S1, mixing FeCl ₂ 、FeCl ₃ Mixing with pure water to form a first mixture, wherein FeCl ₂ And FeCl ₃ Can be used in an amount to produce Fe ₃ O ₄ Is prepared according to the stoichiometric ratio of the components; s2, adding metakaolin into the first mixture, uniformly mixing and formingThe mass ratio of metakaolin added to the first solution in the second mixture can be adjusted at will by the skilled person, for example can be 1.5:20; s3, adding NaOH solution into the second mixture, adjusting the pH value of the reaction system to 13-14, and then reacting for 0.5-1 h at 70-100 ℃ to form a third mixture. In this step, after adding NaOH to form a third mixture, fe ²⁺ And Fe (Fe) ³⁺ Reacts with it to produce Fe ₃ O ₄ And the metakaolin can also react in an alkaline environment to generate a part of sodium aluminosilicate substances; s4, adding SmCl into the third mixture ₃ 、CoCl ₂ And NaBH ₄ Carrying out hydrothermal reaction, controlling the reaction temperature to be 60-100 ℃, controlling the pH to be 13-14, and controlling the reaction time to be 6-10h, wherein the obtained solid product is the magnetic adsorbent; under hydrothermal condition, the sodium aluminosilicate substance can generate hydrothermal crystallization reaction to generate porous molecular sieve Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ O, the metakaolin which is not completely reacted in the step S3 is also continuously reacted with NaOH to generate sodium aluminosilicate substances, and then the sodium aluminosilicate substances undergo hydrothermal crystallization reaction to generate the porous molecular sieve Na ₂ Al ₂ Si ₂ O ₈ ·nH ₂ O, at the same time SmCl ₃ 、CoCl ₂ And NaBH ₄ In the hydrothermal reaction, the following equation is used to react and co-precipitate:

2SmCl ₃ +10CoCl ₂ +12NaBH ₄ +26NaOH→2SmCo ₅ ↓+12NaBO ₂ +26NaCl+35H ₂ ↑+2H ₂ O

newly generated SmCo ₅ Particles and Fe ₃ O ₄ The particles are deposited in the sieve pores of the porous molecules, thus the magnetic adsorbent prepared by the invention. Wherein the reactions of the steps S1 to S4 are all carried out under the protection of nitrogen or inert gas. In the preparation process, more critical is: to make SmCo ₅ 、Fe ₃ O ₄ 、Na ₂ Al ₂ Si ₂ O ₈ Better combination, the reaction is continued for 0.5 to 1 hour with strict control time after the third mixture starts to react, and then SmCl is added ₃ 、CoCl ₂ 、NaBH ₄ If it is added at a time of < 0.5h, the material obtained therefromThe adsorption performance of the material is deteriorated; if it exceeds 1h, it affects SmCo ₅ 、Fe ₃ O ₄ 、Na ₂ Al ₂ Si ₂ O ₈ A combination between them; and in order to make the bonding between crystals more compact, the invention does not directly add SmCo ₅ By means of SmCl ₃ 、CoCl ₂ 、NaBH ₄ The SmCo is precipitated while reacting and the precipitation process is synchronous with the construction of the porous structure of the molecular sieve ₅ Better distributed within the molecular sieve pores. The prepared magnetic adsorbent has a SmCo core ₅ And Fe (Fe) ₃ O ₄ ，Na ₂ Al ₂ Si ₂ O ₈ The magnetic adsorbent has magnetism, also has the capability of adsorbing ammonia nitrogen, and has good adsorption and ion exchange performances. In this example, na in the magnetic adsorbent ₂ Al ₂ Si ₂ O ₈ The molecular sieve is characterized in that the unit cell holes of the molecular sieve can adsorb ammonia nitrogen in sewage. The ammonia nitrogen exists in the sewage in the form of ammonium ions. The unit cell pore size of the molecular sieve is generally in the range of 0.38nm to 0.63nm, molecules and ions larger than the pore size cannot enter, and NH ₄ ⁺ The ion diameter of (2) is 0.286nm, so that ammonium ions can enter the cell holes. Na in the molecular sieve ⁺ Ionization can displace ammonium ions, which are attracted to the cell pores through ionic bonds. The unit cell holes of the molecular sieve have strong polarity and coulomb field, and adsorb ammonium ions in the sewage in a physical attraction mode. Therefore, the magnetic adsorbent provided by the invention can adsorb ammonium ions in sewage in a chemical replacement and physical adsorption mode, and can realize a better removal effect.

In the magnetic adsorbent, smCo is added into the inner core ₅ In comparison with the pure Fe ₃ O ₄ The magnetic adsorption agent of the magnetic material has obviously improved magnetic susceptibility. For example, by SmCo ₅ -Fe ₃ O ₄ /Na ₂ Al ₂ Si ₂ O ₈ ·4.5H ₂ O and Fe ₃ O ₄ /Na ₂ Al ₂ Si ₂ O ₈ ·4.5H ₂ O is, for example, as shown in Table 1, smCo ₅ With Fe ₃ O ₄ The comprehensive performance of the jointly formed magnetic adsorbent is effectively improved, particularly the magnetic susceptibility is obviously improved, and the magnetic adsorbent has Na with adsorption performance ₂ Al ₂ Si ₂ O ₈ ·4.5H ₂ The O proportion is increased, and the adsorption performance is improved, so that the wastewater treatment effect is obviously improved.

Table 1 comparative difference table of two materials

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.

Claims

1. A regeneration circulation system is characterized by comprising a controller which plays a role in control,

A regenerant adding device matched with each reaction cavity and

the action mechanism, the discharge mechanism and the regenerant adding device are respectively and electrically connected with the controller, the controller controls the discharge hole to be sequentially and circularly communicated with each reaction cavity through the action mechanism, sequentially and circularly quantitatively adds the regenerant matched with the magnetic medium into each reaction cavity through the regenerant adding device, and sequentially and circularly discharges the reacted substances in each reaction cavity through the discharge mechanism.

2. The regeneration circulation system according to claim 1, wherein the feeding device is provided with at least two discharge ports, the number of the discharge ports is matched with that of the reaction chambers, each discharge port is respectively communicated with the main conveying channel, each discharge port is respectively arranged at a position communicated with each reaction chamber, the action mechanism is a plurality of feeding on-off devices arranged on the feeding device, each feeding on-off device is respectively electrically connected with the controller, and the controller respectively controls the on-off state of each discharge port through each feeding on-off device;

and/or the regenerant dosing device comprises a container for deploying and/or storing a regenerant,

The feeding pump is communicated with the main feeding channel and is electrically connected with the controller and used for quantitatively outputting the regenerant under the control of the controller;

and/or the discharge mechanism comprises a sub-discharge channel which is communicated with the reaction chamber, and

the controller controls the sub-discharge channels to be sequentially and circularly communicated and disconnected through the discharge on-off devices.

3. The regeneration circulation system according to claim 2, wherein the feeding device further comprises at least two sub-conveying channels, one end of each sub-conveying channel is respectively connected to the main conveying channel, the other end is respectively provided with a discharge port, and each feeding on-off device is respectively arranged in each sub-conveying channel;

the regenerant adding device further comprises at least two sub adding channels, one end of each sub adding channel is connected with the main adding channel respectively, the other end of each sub adding channel is communicated with each reaction cavity respectively, each sub adding channel is provided with an administration on-off device respectively, and the controller is electrically connected with each administration on-off device respectively and used for controlling the on-off of each administration on-off device.

4. The regeneration circulation system according to claim 1, wherein the actuating mechanism is disposed on the feed device and is in driving connection with the main conveying passage, the actuating mechanism is used for adjusting the position of the discharge port,

the controller enables the discharge port to be communicated with each reaction cavity sequentially and circularly by adjusting the position of the discharge port;

or,

the regeneration reaction device is movably restrained on the base, the action mechanism is connected with the regeneration reaction device in a transmission way and is used for driving the regeneration reaction device to act relative to the base,

the controller enables each reaction cavity to be communicated with each discharge hole sequentially and circularly by adjusting the position of each reaction cavity.

5. The recycling system according to any one of claims 1-4, wherein a primary magnetic recovery device is further arranged at the upstream of the feeding device, the primary conveying channel is communicated with the primary magnetic recovery device, and the primary magnetic recovery device is used for receiving the magnetic sludge conveyed out from the upstream and separating and recovering magnetic substances in the magnetic sludge through magnetic force.

6. The regeneration circulation system of claim 5, further comprising a de-flocculation machine disposed upstream of the primary magnetic recovery device, the de-flocculation machine in communication with the primary magnetic recovery device, the de-flocculation machine for receiving the magnetic sludge conveyed upstream and for disrupting the magnetic sludge;

And/or a second cavity is further arranged at the upstream of the feeding device, the main conveying channel is communicated with the second cavity, the second cavity is communicated with the primary magnetic recovery device, and the second cavity is used for receiving and storing the magnetic substances separated by the primary magnetic recovery device;

and/or the regeneration reaction device further comprises stirrers arranged in the reaction cavity, and each stirrer is electrically connected with the controller respectively.

7. The regenerative cycle system of any one of claims 1-4, further comprising a monitoring module electrically coupled to the controller for monitoring an amount of magnetic material in the reaction chamber, wherein the controller controls the feed device to stop delivering magnetic material to the reaction chamber and controls the feed device to deliver magnetic material to another reaction chamber when the monitoring module monitors that the amount of magnetic material in the reaction chamber reaches a set threshold.

8. A method for continuously reducing and regenerating magnetic adsorbent, adopting the regeneration circulation system of claim 7, comprising continuously conveying magnetic substance into a first reaction chamber by using a feeding device, synchronously adding a regeneration agent with quantitative adaptation to magnetic medium into the reaction chamber by using a regeneration agent adding device, simultaneously monitoring whether the quantity of the magnetic substance in the reaction chamber reaches a set threshold value by using a monitoring module in real time,

monitoring the time period after the first reaction cavity stops delivering the magnetic substance, discharging the mixture after the reaction in the reaction cavity through a discharge mechanism when the time period reaches the preset time period,

and so on.

9. A sewage treatment system is characterized in that a magnetic adsorbent with an adsorption function is adopted as a magnetic medium, the sewage treatment system comprises the regeneration circulation system of any one of claims 1-7,

the device also comprises an adsorption reaction box, a magnetic coagulation reaction device arranged at the downstream of the adsorption reaction box and magnetic separation equipment arranged at the downstream of the magnetic coagulation reaction device and used for separating magnetic sludge in sewage,

a sludge discharge port for discharging magnetic sludge in the magnetic separation equipment is communicated with the feeding device,

the discharge mechanism is communicated with the upstream of the adsorption reaction box or the adsorption reaction box.

10. A sewage treatment process, characterized in that the sewage treatment system of claim 9 is adopted, and a magnetic adsorbent with adsorption function is adopted as a magnetic medium, the process comprises,

step 1, filling and mixing the wastewater and a magnetic medium in an adsorption reaction box so as to adsorb at least one solubility index in the wastewater by using the magnetic medium;

and 5, quantitatively refluxing the regenerated magnetic adsorbent to the upstream of the adsorption reaction box or the adsorption reaction box through a reflux pump so as to recycle the magnetic adsorbent.