KR101192174B1 - Plants for advanced treatment of wastewater - Google Patents

Abstract

The present invention relates to an advanced wastewater treatment system for removing organic matter and nutrients from wastewater, including aeration device and agitator by blower and diffuser, and aeration and aeration, and It includes one or more variable reactors and solid-liquid separators that can be selected and operated from three types of operation modes by intermittent aeration, in which aeration of aeration is repeated. By changing the operation mode of each of the variable reaction tanks according to the change of operating conditions, it is possible to configure various processing processes and select the most suitable processing process among them. High aeration power efficiency and oxygen transfer by preventing the narrowing of the flow path and the closure of the diffuser The maintenance can continue to maintain a long-term can be easy and expected energy savings.

Description

Wastewater Advanced Treatment System {PLANTS FOR ADVANCED TREATMENT OF WASTEWATER}

The present invention relates to an advanced wastewater treatment system capable of efficiently removing contaminants such as organic matter, nitrogen and phosphorus from wastewater.

The concentration, flow rate and water temperature of sewage flowing into the sewage treatment plant are not uniform and vary depending on the holiday season, holidays and seasons. In addition, when the concentration of influent organics is low and the concentration of TN and TP is high, the C / N ratio is low, so it is difficult to remove nitrogen and phosphorus.

As such, even when operating conditions are changed due to changes in inflow load and water temperature, conventional methods such as A / O, MLE, A ² / O, Bardenpho, Phostrip method, etc. With technology, it is difficult to respond effectively to changes in inflow quality, inflow C / N ratio, inflow and water temperature.

Thus, anaerobic, anaerobic, aerobic, or anaerobic and aerobic conditions can be cross-repeated according to the inflow conditions in the same reaction tank rather than the fixed technology. There is a need to develop a wastewater wastewater treatment apparatus capable of selecting and operating an optimal treatment process according to the operating conditions by constructing various treatment processes by combining the variable reactor and the variable reactor that can be shortened or extended according to the operating conditions. In addition, it is required to develop aeration and stirring device that is easy to maintain and excellent in efficiency for realizing the variable reactor.

As such, the conventional aeration and agitation device capable of realizing a plurality of reaction conditions includes a combination device of a blower, an air blower, and an air control valve, a combination device of a blower, an air diffuser, an air control valve, an agitator, a pump ejector, and air There are a combination of control valves, a combination of surface sprayer and stirrer.

The aeration and agitation device, which is composed of an underwater aeration device among the aeration and agitation devices of the conventional method, repeats the operation and stop of the blower, or closes the air control valve while the blower is in operation, in which the anaerobic or anaerobic condition is maintained, and the air is stirred. The operation mode can be freely switched to the aeration state in which the aeration condition is continued by opening the control valve, and the intermittent aeration state in which the aeration and aeration aeration are repeated by repeatedly opening and closing the air control valve according to a set condition.

Since the air bubbler is a structure in which air is dispersed into small bubbles by a frusto-conical container type device that rotates with a rotary car, the air diffuser does not become blocked by solids such as activated sludge even when the air is not supplied or intermittently supplied. It is possible to change the operation mode.

However, since the driving unit of the underwater bubble apparatus is installed on the basis of the diffuser capacity, when the operation mode is switched to the stirring state, the floc is dismantled due to excessive stirring force and unnecessary power is wasted.

In addition, the underwater aerators must be operated at all times in abandoned state as well as in the aerated state, so there is a problem in that the power demand is high and the failure rate is high.

The aeration and agitating device composed of a conventional pump ejector is used in a small facility because the aeration power efficiency and agitation power efficiency is low, and the surface aerator is avoided because it causes secondary pollution such as splash and noise.

Another type of device equipped with the conventional agitation, aeration and intermittent aeration function is aeration and agitation device composed of aeration device and agitator composed of a blower, a diffuser, an air supply pipe and an air control valve.

Such aeration and agitation device is aeration state in which the aerobic condition is continued by supplying air, stops the air supply and starts the stirrer, the aerobic agitation state in which anoxic or anaerobic conditions persist, the stirrer is started and the air supply is stopped or the stirrer It is possible to realize intermittent aeration, in which the aeration and aeration of the suspension of air supply and the supply of air are stopped and cross-repeated according to the set conditions.

In addition, in the case of the diffuser, since the supplied air is discharged through a fine air outlet, it is possible to stop the operation of the stirrer in the abandoned state because a separate power for the diffuser is not required unlike the underwater air blower. Accordingly, the power demand is low, and the driving device of the stirrer needs to meet only the stirring force, thus requiring less facility capacity than the driving device capacity of the underwater air bubbler based on the diffuser capacity.

In addition, since the diffuser has better oxygen transfer rate than the underwater bubble apparatus, even if the same amount of dissolved oxygen is supplied, the power of the blower can be reduced.

When the aeration device composed of the diffuser is supplied with compressed air, the compressed air of higher pressure than the external water pressure is filled inside the air supply pipe and the diffuser so that the water body does not flow back into the inside of the air diffuser and the air supply pipe. .

However, when the aeration of compressed air is stopped, the water flows back through the air outlet of the diffuser through the air outlet of the diffuser, and the water flows back up to the bottom of the air supply pipe. It can be reduced and the aeration efficiency can be lowered.

In addition, when the reaction solution containing the microorganism, pin floc, and nito flowed into the backflow is not removed, the microorganisms and fine solids contained in the water bodies accumulate in the diffuser and the air inlet pipe, and solidify into coarse solids. The flow path shrinks and the diffuser is blocked.

In this way, if the available cross-sectional area of the air supply pipe is reduced or the diffuser is clogged, the aeration power efficiency and oxygen transfer amount are significantly reduced, so the reactor needs to be emptied and maintained. Maintenance of the abandonment system requires manpower and cost, and the use of the unit is impossible during maintenance, and this problem may be repeated periodically.

In addition, when the condensed water generated by condensation in the diffuser and the air pipes in which the water vapor contained in the compressed air is immersed in a relatively low temperature reaction liquid accumulates in the air pipes, the available flow path is reduced, so that rapid drainage is required.

In addition, the use of an diffuser is avoided due to the problem of stopping the air supply and continuing the aeration state for a long time, or increasing the backflow inflow by the intermittent aeration that repeats the supply and interruption of the air. Mechanical aeration devices, such as large underwater blisters, are mainly used and require improvement.

The present invention has been made in order to overcome the problems of the prior art described above, by combining the one or more variable reaction tank equipped with aeration and agitator with aeration, aeration, intermittent aeration function, seasonal changes, inflow load and In order to respond flexibly to changes in operating conditions such as changes in water quality and changes in water temperature, it is possible to realize various wastewater altitude treatment processes by selecting and operating the operation mode of each reactor, and to select and operate the optimal process among them. The technical problem is to provide the high level of wastewater treatment system and the aeration and agitation power efficiency and the aeration and agitation device that can maintain high efficiency for a long time.

The wastewater advanced treatment apparatus according to the present invention for achieving the above object, the solid-liquid separation device is connected to the reaction tank module consisting of a plurality of variable reaction tank and each of the variable reaction tank located at the end and a solid-liquid separation operation each having aeration and agitation device Each of the variable reactors is selected from the aeration mode for sustaining aerobic conditions, the non-aeration agitation mode for maintaining anoxic or anaerobic conditions and the intermittent aeration mode for cross-repeating aeration and aeration aeration depending on the set conditions Operated in the operation mode, the reactor module, the plurality of variable reactors are installed in series so that the inflow and wastewater can be sequentially processed may be selected a treatment process combining the operation mode of each of the variable reactors in accordance with the operating conditions. .

Referring to the operation of the configuration, each of the variable reaction tank can be operated by selecting any one of the three types of operation mode consisting of aeration-free state, aeration state, intermittent aeration state by the operation of the aeration and agitator. Therefore, the wastewater advanced treatment apparatus according to the present invention composed of n variable reactors can be operated by 3 ⁿ types of treatment processes, and can select and operate the treatment process most suitable for a given operating condition among these kinds of treatment processes.

Accordingly, the operation mode of the variable reactors is changed in response to changes in operating conditions according to changes in inflow flow rate, concentration, inflow phase, water temperature, etc. to set and operate any treatment process most suitable for the required operating conditions. When the conditions change, the operation mode of the variable reactors may be readjusted and the operation may be changed back to a processing process suitable for the changed operating conditions.

In addition, the aeration and agitating device is installed in the variable reaction tank of the sewage wastewater treatment apparatus according to the present invention, a blower for generating compressed air, an acid pipe for dispersing microbubbles in water, the acid by transporting the compressed air generated in the blower It may be made of an air supply pipe for supplying to the engine, an air control valve for supplying or stopping aeration compressed air to the diffuser, and a stirrer for mixing the reaction liquid inside the reactor.

In addition, the air supply pipe further includes a reservoir for storing water bodies, and an upper end thereof communicating with air or water, and a lower end communicating with the reservoir part, the lower end of which is connected to the reservoir, and a water body such as a reaction liquid and condensate introduced in countercurrent. By draining to the outside of the air supply pipe through the outflow pipe can prevent the narrowing of the flow path of the air supply pipe and the diffuser pipe.

In addition, the aeration and agitation device may further include a pump for pumping the water body, the inlet and the top of the outlet pipe of the pump is installed so as to communicate with each other and the water body collected in the reservoir by the pumping function of the pump Can drain to the outside. The pump may be a mechanical pump equipped with a driving unit such as a centrifugal pump, a vacuum pump, or a fluid pump such as an ejector using fluid energy as a power source.

In addition, the air supply pipe may be connected to the washing water supply pipe, and the washing water may be injected through the washing water supply pipe to clean the inside of the air supply pipe and the diffuser. The washing water may be used as a defoaming water introduced for removing bubbles generated in the surface of the reaction tank, as well as water and ground water. Thus, the washing using the washing water is effective to remove the solids introduced through the reaction solution flowed back.

The wastewater advanced wastewater treatment apparatus according to the present invention having the configuration as described above can be operated by selecting from three types of operation modes by intermittent aeration and aeration of aeration by aeration and aeration, and according to a set condition. Since the variable reactors are included, various operation processes can be configured by changing the operation mode of the variable reactors according to the change of operating conditions such as inflow flow rate, concentration change, change of properties and seasonal water temperature change, among which the most suitable treatment for the operating conditions Since the process can be selected and operated, it can flexibly respond to changes in operating conditions, while maintaining high aeration power efficiency and oxygen transfer rate for a long time, easy maintenance, and energy saving effect can be expected.

1 is a flow chart showing a wastewater treatment system according to the concept of the present invention.
Figure 2 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to the first embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to a second embodiment of the present invention.
Figure 4 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to a third embodiment of the present invention.
Figure 5 is a side cross-sectional view showing a first embodiment of a variable reactor included in the wastewater wastewater treatment apparatus according to the present invention.
Figure 6 is a side cross-sectional view showing a second embodiment of a variable reactor included in the wastewater wastewater treatment apparatus according to the present invention.
Figure 7 is a side cross-sectional view showing a third embodiment of a variable reactor included in the wastewater wastewater treatment apparatus according to the present invention.
8 is a side sectional view showing a fourth embodiment of a variable reactor included in the wastewater advanced wastewater treatment apparatus according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the wastewater wastewater treatment apparatus according to a preferred embodiment of the present invention.

1 shows a wastewater treatment system of the wastewater treatment system according to the concept of the present invention.

As shown in FIG. 1, the wastewater advanced treatment apparatus according to the present invention basically separates a plurality of variable reactors each provided with aeration device and agitator, and solid-liquid separation for solid-liquid separation of the effluent from the variable reactor located at the end. Including the device.

The plurality of variable reaction tanks and the solid-liquid separator are connected in series, and the wastewater introduced into the wastewater advanced treatment apparatus may be sequentially processed through the plurality of variable-reactors and the solid-liquid separator.

The variable reaction tanks each have a non-aeration stirring mode for mixing the reaction liquid in a state in which the air supply is stopped, an aeration mode in which stirring and aeration are performed by supplying air, and an intermittent cycle of repeated aeration and aeration aeration depending on a set condition. It is configured to be selectable from three kinds of operation modes of the abandonment mode.

The plurality of variable reactors communicate with each other to inflow and outflow, respectively, to form a reactor module. Each of the variable reactors operates three types of aeration, aeration mode, and intermittent aeration mode. Since one of the modes can be selected and operated, when the reactor module is composed of n variable reactors, 3 ⁿ operations can be performed as a whole. Selective operating specifications of such a reactor module is appropriately selected so that the wastewater treatment process can be made. Here, n refers to the number of the variable type reaction tank which is a natural number that can be variously selected according to factors such as the capacity of the sewage treatment system and the installation location.

For example, one variable reactor can implement three types of operation modes, and operates in any one operation mode selected from among them. When the reactor module is composed of two, three, four, and five variable reactors, nine kinds of processing steps, 27 types of processing steps, 81 types of processing steps, and 243 types of processing steps are performed. will be.

In the example of FIG. 1, four or more variable reactors are illustrated, but the number of the variable reactors may be varied according to a selection, and the concept of the present invention does not exclude that the reactor module includes one variable reactor. Of course.

As described above, each variable type reaction tank is provided with aeration and agitation device, and the variable reaction tank is operated in either aeration mode or aeration mode, or intermittent aeration mode, depending on the operation of the aeration device and the agitation device. Can be operated. Such intermittent aeration mode may be configured to automatically repeat the aeration or aeration agitation in accordance with the set conditions in conjunction with the Timer, ORP or DO Controller.

According to the above concept, by adjusting the operation mode of the variable reactors in response to the change of operating conditions according to the change of inflow flow rate, concentration, inflow phase or water temperature, without modifying or changing the device constituting the wastewater advanced water treatment facility It is possible to select and operate the processing process that best suits the required operating conditions, and if the operating conditions are changed again, the operation mode of the variable reactors can be recombined to select the processing process optimized for the changed operating conditions to cope with the change of various operating conditions. Note that there is an advantage.

In addition, the wastewater advanced treatment apparatus according to the present invention may further include a preliminary solid-liquid separation apparatus capable of firstly treating the influent wastewater and reducing the inflow load of the flow initially introduced into the reactor module.

The preliminary solid-liquid separator is disposed at the input stage of the reactor module, that is, the first stage of the first reactor of the variable type reaction tank, and may be selected from a pressure resolved tank (DAF), a gravity type primary sedimentation basin or a flocculation settler.

In the example of FIG. 2 to be described later, a gravity-type primary sedimentation basin (1000 of FIG. 2) in which solids such as sedimentary organic substances are precipitated and separated by gravity is described.

In addition, the solid-liquid separator in the sewage wastewater treatment apparatus according to the present invention, a gravity sedimentation basin, a separator for separating solids by a membrane, a filtration device for filtering out solids, or a solids at the same time by a biological membrane The filter may be selected from among the biofilters that can be removed, but is not necessarily limited thereto.

In addition, although not shown in Figure 1, the solid-liquid separated into the variable reaction tank, that is, the sludge conveying device is returned to include the activated sludge, or an internal circulation device for circulating the reaction liquid from the variable reaction tank to another variable reaction tank further Of course, it can be provided.

In addition, a variable reactor disposed at the end side of the reactor module, that is, between the outlet side of the reactor module and the solid-liquid separator, is provided with an aerobic reactor for maintaining aerobic conditions at all times, and the flow of wastewater is variable. In addition, the aerobic reactor and the solid-liquid separator may be processed sequentially.

The aerobic reaction tank is provided with aeration device, but can perform only aeration function, and maintain aerobic state at all times to remove by over-ingestion of phosphorus, aerobic decomposition of residual organic matter, inhibit the occurrence of pin floc, such as the final treatment water quality It can be stabilized.

 Figure 2 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to the first embodiment of the present invention.

The wastewater advanced treatment apparatus according to the first embodiment of the present invention is a gravity-type separator for solid-liquid separation of the effluent from the previous stage solid-liquid separator consisting of a gravity-type primary sedimentation basin 1000, five variable reactors 2000, and a terminal side variable reactor. It consists of a solid-liquid separator consisting of the settling basin (3000).

In addition, the aeration and stirring apparatus installed in the variable reaction tank in the first embodiment of the present invention, the blower 10 for generating compressed air, the diffuser 30 for dispersing fine bubbles in water, and the blower It is possible to mix the air supply valve 20 for supplying the compressed air and supply to the diffuser, the air control valve 140 for supplying or stopping compressed air to the diffuser and the reaction solution inside the reactor It may be made including a stirrer 200.

The operation of the aeration and agitating device will be described in more detail below.

When the air control valve 140 is closed and the air supply is stopped and the stirrer 200 is stirred, the air control valve 140 is operated in an aerobic agitation mode in which anoxic or anaerobic conditions are maintained, and the air control valve 140 is opened. When the air is supplied and the operation of the stirrer 200 is stopped, the aerobic condition is maintained in aeration mode, and the opening and closing operation of the air control valve 140 and the operation and operation of the stirrer 200 according to the set conditions. As the operation of the stop is made at the intersection, it can be operated in the intermittent aeration mode in which the aeration and aeration agitation are repeated repeatedly. You will be able to choose.

In the example shown in the drawing, since the reactor module is composed of five variable reactors, it is possible to select and implement 243 kinds of processing processes of 5 approval of 3. Among them, it is possible to flexibly respond to changes in inflow and climatic conditions by selecting the optimal treatment process.

The wastewater advanced wastewater treatment apparatus according to the present invention as described above can realize various treatment processes without modifying the apparatus, and has the advantage of selecting and operating an optimal treatment process among them.

In addition, the aeration and agitation device may be selected and applied to various kinds of aeration and / or agitation device, such as a combination of a conventional apparatus or a surface aerator and agitator including a water-based air bubbler or pump ejector.

Figure 3 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to a second embodiment of the present invention.

In the wastewater advanced treatment apparatus according to the second embodiment of the present invention, an example in which the solid-liquid separator in which the reaction liquid passed through the reactor module is separated into the solid-liquid separator is constituted by the membrane device 4000.

The separator device 4000 is an immersion type installed such that a separator such as a hollow fiber type or a plate type is immersed in the reaction solution of the aerobic reactor. However, the membrane device 4000 is not necessarily limited to an immersion type, and various types of membrane devices, such as a counter flow membrane device that pressurizes with a pump or the like, may be selectively applied.

Figure 4 is a side cross-sectional view showing the wastewater wastewater treatment apparatus according to a third embodiment of the present invention.

The sewage wastewater treatment apparatus according to the third embodiment of the present invention increases the ability to respond to changes in flow rate and concentration by accommodating a biofilm carrier 400 capable of attaching and growing a large amount of microorganisms inside the variable reactor 2000. It provides the concept of reducing the capacity of the reactor to become a compact facility.

In addition, the solid-liquid separator 5000 for solid-liquid separation of the reaction solution made of the reaction is composed of a bio-filter 5000 filled with a granular biofilm carrier 500 capable of physical solid-liquid separation to remove the solids with a biological reaction. Can be.

The wastewater advanced wastewater treatment apparatus of the third embodiment has excellent ability to cope with load fluctuations, small capacity of the reaction tank and solid-liquid separator, and excellent treatment efficiency. It can be applied to advanced treatment such as Sanitary Sewer Overflow (SSO) and Combined Sewer Overflow (CSO).

Figure 5 is a side cross-sectional view showing a first embodiment of a variable reactor constituting the advanced wastewater treatment system according to the present invention.

The variable reactor shown in FIG. 5 includes a water tank 300 through which water bodies can be introduced, stored, and discharged, a blower 10 for generating compressed air, and an air diffuser 30 for dispersing fine bubbles in water through an air outlet. ), An air supply pipe 20 for transporting the compressed air generated by the blower and supplying it to the diffuser, a water storage part 71 for collecting and storing water bodies such as a reaction liquid and condensate flowed back into the air supply pipe, and an upper end The aeration device having an outlet pipe (40) installed in communication with the outside of the water tank (300) and the lower end is in communication with the reservoir, the air control valve (140) installed in the air supply pipe (20), and stirred the reaction liquid It may be made of a stirring device 200 that can be.

As shown, the reservoir 71 may be configured as a separate reservoir space, but may be installed horizontally near the bottom of the water tank 300 to use a lower space of the air supply pipe where the introduced water stays.

 The end of the outlet pipe 40 extends from the horizontally installed portion of the air supply pipe 20 to the lower side where the water reservoir 71 is formed, and the pressure of the aeration compressed air supplied from the blower 10, etc. The water body may be drained to the outside through the outflow pipe 40.

The air supply pipe 20 may be arranged horizontally as shown in the figure, but the air supply pipe itself while the water pipes are guided to the place where the outlet pipe is installed in parallel with the function of the water storage pipe outlet 40 Of course, the end of the can be installed to be inclined toward the disposed side.

In this case, when compressed air is supplied by the blower 10, the water body collected in the reservoir 71 may be drained to the outside through the outlet pipe 40 by the pressure of the compressed air.

In addition, the outlet pipe 40 is provided with a flow path adjusting means 50 such as a valve can be opened and closed according to the selection.

The flow path adjusting means 50 may be configured as an automatic valve, and when the automatic valve is formed, the opening and closing operation may be performed according to a set period in conjunction with a timer, or may be opened and closed according to a set pressure range in connection with a pressure sensor installed inside the air supply pipe. It can be operated to drain the water properly.

In addition, the flow path control means 50 may be configured as a pressure valve (Automatic Pressure Valve), the pressure in the air supply pipe 20 due to the reduction of the flow path of the air supply pipe 20 and clogging the diffuser 30, etc. If raised to exceed a predetermined pressure, the valve may be opened to allow the water body to drain out.

In addition, the variable reaction tank according to the present invention may further include a washing water supply pipe (80) installed to communicate with the air supply pipe (20), the washing water is injected through the washing water supply pipe to the air supply pipe (20) and The interior of the diffuser 30 may be cleaned.

In addition, in general, most wastewater wastewater treatment facilities are installed in the upper part of the reaction vessel to deflate foam generated from the water surface of the reactor, so when using the water for washing such a parcel water supplied through the washing water supply pipe, The washing water supply facility can be omitted, which may have economic advantages.

Looking at the operation of the variable reaction tank according to the first embodiment of the present invention, when the air control valve 140 is opened and closed it can supply or stop the air to the diffuser (30) to close the air supply valve Operate to stop the air supply and operate the stirrer 200 to configure the aeration agitation mode, open the air supply valve 140 to supply air and stop the operation of the stirrer 200 to give up A mode can be configured, and an intermittent aeration mode can be configured in which abandonment and aeration stir can be repeated in accordance with a set condition. In the concept of the present invention, each of the variable reaction tanks can be operated by selecting any one of the three types of operation modes as described above, and the operation mode is switched because the reaction liquid introduced into the backflow can be discharged to the outside through the outlet pipe 40. The possibility of defects is greatly reduced and high oxygen transfer rate and aeration power efficiency can be maintained.

As such, when the aeration is stopped, the stirrer is stopped, and the mechanical aerator is operated 24 hours without a distinction between aeration and aeration. It has the advantage of saving energy than the underwater air-dispersing device which is a mechanical diffuser.

Since the operation of the variable reactor shown in FIG. 6 to FIG. 8 to be described is basically applicable to the description of the operation of the variable reactor shown in FIG. 5, the main differences will be described.

Figure 6 is a side cross-sectional view showing a second embodiment of a variable reactor included in the wastewater wastewater treatment apparatus according to the present invention.

The variable reaction tank shown in FIG. 6 includes a water tank 300 through which water bodies can flow, stay, and flow out, a blower 10 for generating compressed air, and an air diffuser 30 for dispersing fine bubbles in water through an air outlet. ), The air supply pipe 20 for transporting the compressed air generated by the blower and supplying it to the diffuser, the water storage part 72 for collecting and storing water such as the reaction liquid and condensate introduced into the air supply pipe, Aeration device having an outlet pipe 40 and a pump 90 capable of pumping a water body, the communication device being connected to the reservoir and the lower end thereof, the air control valve 140 installed in the air supply pipe 20, and the reaction liquid. It comprises a stirrer 200 that can be mixed.

In this case, the suction port of the pump 90 and the outlet pipe 40 communicate with each other, and when the pump operates, the outlet pipe 40 to which the water accumulated in the reservoir 72 is drained to the outside is connected with each other and the pump operates. The waterbody accumulated in the water portion 72 may be drained to the outside. When the pump 90 is operated, the water body accumulated in the reservoir 72 may be drained to the outside. The pump 90 may be any type of pump such as a centrifugal pump, a vacuum pump, or a fluid pump using fluid energy as a power source.

The reservoir 72 is a space configured to allow the water bodies introduced to one side of the air supply pipe 20 to be collected and stored, and the reservoir 72 and the outlet pipe 40 communicate with each other and are compressed air. The water accumulated in the reservoir may be discharged to the outside or may be reduced to the water tank 300 by the pressure. Since the reservoir 72 of this embodiment is configured as a separate reservoir space, it has an advantage that the drainage and the air can be smoothly made than the embodiment of FIG. 5 simply using the lower side of the air supply pipe as a storage space.

Figure 7 is a side cross-sectional view showing a third embodiment of a variable reactor included in the wastewater wastewater treatment apparatus according to the present invention.

The variable reaction tank shown in FIG. 7 includes a water tank 300 through which water bodies can flow, stay, and flow out, a blower 10 for generating compressed air, and an air diffuser 30 for dispersing fine bubbles in water through an air outlet. ), The air supply pipe 20 for transporting the compressed air generated by the blower and supplying it to the diffuser, the water storage part 73 for collecting and storing water bodies such as a reaction liquid and condensate flowed back into the inside of the air supply pipe, and an upper end thereof. Aeration device having an outlet pipe (40) installed in communication with the outside of the air supply pipe and the bottom is in communication with the water reservoir and an ejector (100) which is a fluid pump capable of pumping water, and an air control valve installed in the air supply pipe ( 140) and a stirrer 200 capable of mixing the reaction solution.

The ejector 100, the fluid supply port 101 for supplying the primary fluid to be used as a power source, the suction port 102 for sucking the secondary fluid to be discharged, the mixed fluid of the primary and secondary fluid flows out It may be composed of a nozzle 104 for generating a negative pressure or a negative pressure, that is, a suction force using the outlet 103 and the fluid energy of the primary fluid. The inlet 102 of the ejector and the upper end of the outlet pipe 40 are connected to each other so that when the primary fluid is supplied through the fluid supply port 101, the outlet 103 by the negative pressure or negative pressure formed in the inlet 102 The water body collected in the reservoir may be outside the air supply pipe through

Here, the primary fluid flowing through the fluid supply port 101 of the ejector 100 is made of groundwater or a constant water supplied separately from the outside, or made of defoaming water pumped to the upper portion of the reaction tank 300. Can be.

In the ejector 100, when the parcel water is used as a power source, an electric facility such as a motor and an electric wire is omitted, and thus the device configuration is simple.

In addition, a separate compressed air generator for an ejector may be connected to the fluid supply port 101 of the ejector, such that compressed air supplied from the outside may be used as a primary fluid as a power source.

In addition, at least one of the fluid supply port 101, the suction port 102 and the outlet 103 of the ejector 100 may be provided with flow path adjusting means (110, 120, 130) may be configured to open and close the flow path according to the selection.

The flow control means may be made of an automatic valve, such automatic valve is made to open and close in conjunction with a timer or a pressure sensor installed inside the air supply pipe 20, the water body in accordance with the time that the water accumulated in the air supply pipe When the water is automatically drained, or when the water body is accumulated in the air supply pipe and the flow path is reduced to increase the pressure, the pressure sensor detects this and opens the automatic valve to automatically drain the water body.

In addition, the flow path control means may be made of a pressure valve (Automatic Pressure Valve), in this case there is an advantage that the configuration is simpler than the automatic valve equipped with an actuator (Actuator) while being able to drain the water automatically.

In addition, the reservoir 73 may be formed of a drain pipe in the form of a drain pipe at the lower end of the air supply pipe and one end side of the curved pipe and the outlet pipe 40 may be connected to each other drainage.

8 is a side sectional view showing a fourth embodiment of a variable reactor included in the wastewater advanced wastewater treatment apparatus according to the present invention.

The variable reactor shown in FIG. 8 is an example in which the fluid supply port 101 of the ejector 100 is connected through the fluid supply pipe 60 so as to communicate with the air supply pipe 20 in the variable reactor according to the third embodiment. Indicates.

Here, the compressed air compressed by the blower 10 is used as a primary fluid as a power source, that is, a part of the compressed air supplied to the diffuser 30 is used as a power source of the ejector.

The fluid supply port 101, the suction port 102 and the outlet 103 of the ejector 100 is provided with a valve which is a flow path adjusting means, the water body in the air supply pipe is drained or circulating flow path according to the opening and closing operation of the valve (Loop Line) ) May be formed.

Even when the flow path control means on the outlet 103 side is closed and the flow path control means on the suction port 102 and the fluid supply port 101 are opened, the compressed air does not leak to the outside. When the flow path on the supply port 101 side is opened, a circulation flow path is formed by the air supply pipe 20 and the fluid supply pipe 60 and the outlet pipe 40 arranged vertically and horizontally, so that it is scattered in the lower portion of the water tank 300. It should be noted that there is an advantage that the compressed air can be distributed at equal pressure and air volume to a plurality of diffusers 30.

Therefore, if only the movable side is considered, the flow path adjusting means may be installed only on the outlet 103 side, and the flow path adjusting means may be omitted on the inlet and the fluid supply side, but all of the flow path adjusting means are connected to the three communication parts in consideration of maintenance. It is preferable to install.

When the flow path adjusting means is composed of an automatic valve and a pressure valve, more expensive and careful management is required than the manual valve. Accordingly, the flow path adjusting means 130 on the outlet 103 side is configured as an automatic valve, and the automatic valve is automatically opened and closed by interlocking with a timer or a pressure sensor installed inside the air supply pipe 20, The flow control means at the fluid supply port 101 and the suction port 102 side may be configured as a manual valve.

In addition, the flow path control means on the outlet 103 side may be configured as a pressure valve, and the flow path control means on the fluid supply port 101 and the suction port 102 side may be configured as a manual valve.

The manual valves are preferably kept open except when necessary for maintenance.

As in this embodiment, draining the water such as the reaction liquid and the condensate introduced into the countercurrent by using the compressed air generated for aeration, the device configuration is simple and easy to maintain and operate.

In addition, the stirrer may be composed of a conventional underwater bubble device 210 composed of a drive unit, a rotating shaft, an impeller and an air diffuser.

In the case of improving the existing reaction tank in which the underwater bubbler is installed and operated by the intermittent aeration process, the power source of the underwater bubbler is set based on the aeration capacity. Therefore, when the aeration is agitated, the floc is dismantled due to excessive stirring force. Wasted problems can occur. However, there is a problem that excessive cost and time is required when replacing the already installed underwater bubble apparatus with a stirrer.

Therefore, the aeration device of the diffuser type is installed and the existing aeration device installed for abandonment is dedicated for agitation, but an existing aeration device is installed by additionally installing a frequency converter to properly adjust the excessive agitation force. It is preferable to configure the group to maintain the group and to control the stirring power.

In addition, the reservoir 70 may be formed of any one of the reservoirs 71, 72, and 73 in the form shown in FIGS. 5 to 7, but is not limited thereto. 72 may be a combination of the above examples, such as a combination of the reservoir 73 in the form of a drain tube shown in FIG. 7. As such, the water storage part of the aeration device according to the present invention is not limited to the illustrated case, and can be configured in various ways without being limited in form if a water body such as a counter-flow reaction solution and condensate can be stored.

As described above, according to the present invention, while the aeration performance is maintained, due to the phenomenon that the water body flows back during aeration of aeration, the backflow problem of the diffuser that has been avoided in the configuration of the intermittent aeration device is solved periodically. The diffuser can be applied to the intermittent aeration process, where aeration and aeration are repeated, and it can be expected to reduce the energy required because it can replace the underwater aeration equipment.

In the above, the present invention has been described in detail based on the embodiment and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

10: blower 20: blower piping
30: diffuser 40: outlet pipe
50: outlet pipe flow control means 60: fluid supply pipe
70, 71, 72, 73: water reservoir 80: water supply pipe for washing
90 pump 100 ejector
101: fluid supply port 102: suction port
103: outlet 104: nozzle
110, 120, 130: flow path adjusting means 140: air control valve
200: stirrer 210: underwater bubble equipment
300: tank 400: biofilm carrier
500: granular biofilm carrier 1000: primary sedimentation basin
2000: variable reactor 3000: sedimentation basin
4000: membrane device 5000: biofilter

Claims (17)

A reactor module comprising n variable reactors each having aeration and agitation; And
It includes; solid-liquid separator connected to the variable reaction tank located at the end for solid-liquid separation;
Each of the variable reactors is selected from three operation modes: aeration mode for sustaining aerobic conditions, aerobic agitation mode for sustaining anaerobic or anaerobic conditions, and intermittent aeration mode for cross-repetition and aeration of aeration depending on the set conditions. Mode,
In the reactor module, the n variable reactors are installed in series so that the influent wastewater can be sequentially processed, and the inflow flow rate is increased in 3 ⁿ (n-th power of 3) treatment processes including a combination of operation modes of the n variable reactors. According to the operating conditions, any one treatment process is performed in response to the operating conditions such as inflow phase or water temperature, and the operation modes of the n variable reaction tanks are recombined in response to the change of the operating conditions, thereby performing another treatment process. An advanced wastewater treatment system, characterized in that 3 ⁿ treatment processes can be carried out variably. The method of claim 1,
And a preliminary solid-liquid separator connected to the inlet side of the reactor module and reducing the inflow load of the wastewater into the reactor module.
The preliminary solid-liquid separator is selected from among gravity type primary sedimentation basin, pressurized flotation tank (DAF) or flocculation sedimentation basin. The method of claim 1,
Further comprising; an aerobic reactor connected between the reactor module and the solid-liquid separator;
The aerobic reactor is a high wastewater treatment system, characterized in that the aeration device to maintain the aerobic conditions at all times. The method of claim 1,
The solid-liquid separation device, sewage sewage treatment apparatus, characterized in that one or more selected from gravity sedimentation basin, filtration device, membrane device or BioFilter. The method of claim 1,
And a biofilm carrier accommodated in at least one of the variable reactors and capable of attaching and growing microorganisms. The method of claim 1,
The variable reactor,
Aeration device including a water tank, a blower for generating compressed air, an diffuser for dispersing fine bubbles in water, and an air supply pipe for supplying compressed air generated by the blower to the diffuser, and compressed air for aeration in the diffuser. It includes; and a stirrer for mixing the reaction solution and the air control valve that can supply or stop,
The non-aeration stirring mode is made by closing the air supply valve air supply is stopped and the stirrer is operated, the aeration mode is made by supplying air by opening the air supply valve and the operation of the stirrer is stopped, The intermittent aeration mode is a high wastewater treatment system, characterized in that the aeration and non-aeration agitator is repeated in accordance with the set conditions. The method of claim 6,
A reservoir for storing water bodies flowing into the air supply pipe; And
A lower end of the outlet pipe communicating with the reservoir;
Sewage water advanced treatment apparatus, characterized in that the water body of the reservoir is discharged to the outside along the outlet pipe. The method of claim 6,
The stirrer may include:
An apparatus for treating sewage water, comprising: a hydrofoil device equipped with a driving unit, an impeller, and an air diffuser and a frequency controller. The method of claim 7, wherein
Further comprising; washing water supply pipe in communication with the air supply pipe,
Washing water supplied through the washing water supply pipe is a wastewater advanced treatment apparatus, characterized in that for cleaning the inside of the air supply pipe and the diffuser. The method of claim 7, wherein
And a pump connected to the outlet pipe to discharge the water body of the reservoir. The method of claim 7, wherein
Further comprising a flow path adjusting means for opening and closing the outflow pipe,
The flow passage adjusting means is a sewage wastewater treatment apparatus, characterized in that the automatic valve which is interlocked with a pressure sensor installed inside the timer or the air supply pipe. The method of claim 7, wherein
Further comprising a flow path adjusting means for opening and closing the outflow pipe,
The flow passage adjusting means is a high pressure sewage treatment apparatus, characterized in that the pressure valve is opened when the pressure inside the air supply pipe exceeds a set pressure. The method of claim 7, wherein
And an ejector having a fluid supply port through which the primary fluid flows, an inlet port through which the secondary fluid flows into the reservoir, an outlet port through which the mixed fluid of the primary fluid and the secondary fluid flow out, and a nozzle; Sewage water treatment system characterized in that. The method of claim 13,
The ejector is sewage water, characterized in that the fluid supply port is in communication with the air supply pipe by the fluid supply pipe, the secondary fluid flows from the suction port by using the fluid energy of the compressed air that is pumped from the blower through the fluid supply pipe. Advanced processing unit. The method of claim 13,
The ejector, the sewage wastewater treatment apparatus, characterized in that the fluid supply port is in communication with the parcel water supply pipe, the secondary fluid is introduced into the suction port by using the fluid energy of the parcel water pumped from the parcel water supply pump. The method of claim 13,
At least one of the fluid supply port, the fluid inlet port or the outlet port is opened and closed by a flow path adjusting means consisting of an automatic valve,
The flow control means, the sewage and wastewater treatment apparatus, characterized in that the opening and closing operation in conjunction with a timer or a pressure sensor installed inside the air supply pipe. The method of claim 13,
At least one of the fluid supply port, the fluid inlet port and the outlet port is opened and closed by a flow path control means consisting of a pressure valve,
The flow passage adjusting means, the wastewater advanced water treatment apparatus, characterized in that the opening operation when the internal pressure of the air supply pipe exceeds the set pressure.

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