CN105858800A - Oily sewage separation-removal post-treatment device - Google Patents

Abstract

The invention discloses a post-processing device for separating and separating oily water, which comprises a cyclone separator, a raw liquid tank, and a liquid collection tank. The cyclone separator includes a separation cone and a tailpipe. The opening at the upper end is sealed by a circular plate with a conical top. The separation cone is provided with a tangential liquid inlet pipe, and the liquid collection tank is located under the tail pipe. The inlet end of the raw liquid inlet pipe extends into the raw liquid tank, the outlet end of the raw liquid pipe is connected with the tangential liquid inlet pipe, a core pipe is arranged in the cyclone separator, and the upper end of the core pipe is connected to an oil collection pipe through an oil collection pipeline. The tank has several oil inlet holes on the core pipe. The beneficial effects of the invention are: high-efficiency separation of oil and water can be realized without additional chemical agents, the equipment can be reused, and the overall cost is low; the treatment process is very continuous, and there is no need to pause and switch stations, and the work efficiency is high; continuous Separation and automatic collection of oil, good treatment effect.

Description

A post-treatment device for oil and water separation and detachment

technical field

The invention belongs to the technical field of oily sewage treatment, and in particular relates to a post-treatment device for separating and detaching oily sewage.

Background technique

In the fields of oil exploitation industry, ocean shipping industry, etc., it is often necessary to post-process oily sewage and oily seawater to avoid oily residues and environmental pollution. At present, there are mainly three types of treatment methods for oily sewage at home and abroad: chemical treatment, physical treatment and biochemical treatment. Among them, the physical treatment method does not require additional additives, and the equipment can be used repeatedly, and the overall cost is relatively low, so it is the most used method. For the treatment of large quantities of oily sewage, centrifugal separation is often used. However, at present, when treating oily sewage, there are still some deficiencies in the comprehensive consideration of separation efficiency, separation cost, and separation effect.

Contents of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a reasonable structure, good processing capacity, can process a large amount of oily sewage and oily sea water relatively quickly, the overall cost is low and the post-treatment effect is good. device.

In order to achieve the above object, the present invention adopts the following technical solutions:

A post-processing device for separating and separating oil and water, comprising a cyclone separator, a raw liquid tank, and a liquid collection tank. The cyclone separator includes a separation cone, a vertical tailpipe coaxially connected with the separation cone, and the upper and lower ends of the separation cone Both are open, the upper and lower ends of the tail pipe are open, the upper opening of the separation cone is larger than the lower opening of the separation cone, the upper opening of the tail pipe is connected with the lower opening of the separation cone, the upper opening of the separation cone is sealed by a cone top disc, and the separation cone is equipped with The tangential liquid inlet pipe connected with the inside of the separation cone, the liquid collection tank is located under the tail pipe, and also includes a stock solution extraction pump, which is provided with a stock solution inlet pipe and a stock solution outlet pipe, and the inlet end of the stock solution pipe extends into In the raw liquid tank, the outlet end of the raw liquid pipe is connected with the tangential liquid inlet pipe, and a core pipe coaxial with the tail pipe is arranged in the cyclone separator, and the upper end of the core pipe passes through the conical top disc and extends out of the cyclone separator In addition, the upper end of the core pipe is connected to an oil collection tank through the oil collection pipeline. The core pipe is provided with a number of pipe oil inlet holes communicating with the inside of the core pipe. It also includes a circulation pump. Circulating liquid pipe, the inlet end of the circulating liquid pipe extends into the liquid collection tank, the outlet end of the circulating liquid pipe is connected with the tangential liquid inlet pipe, and the circulating liquid on-off valve is arranged on the circulating liquid pipe.

As a preference, the separation cone is provided with an auxiliary rotation cylinder with upper and lower ends open, the rotation assistance cylinder is coaxial with the separation cone, and the upper end of the separation cone is sealed and connected with the cone top disc, and the height of the rotation assistance cylinder is greater than Two-thirds of the height of the separation cone.

As a preference, several return holes are provided on the top of the cylinder side wall of the spin-assisting cylinder.

Preferably, the axis of the tangential liquid inlet pipe is parallel to a tangential direction of the separation cone.

As a preference, the core tube is provided with a self-adjusting tube that can slide up and down relative to the inside of the core tube. Outside the core tube, the lower end of the self-regulating tube is provided with a tube lower sealing plate that seals the lower end opening of the self-regulating tube. The guide vertical bar has a rectangular cross-section, and the guide vertical bar is slidingly connected with the floating base. There are a number of pipe oil holes connected with the self-adjusting pipe on the side wall of the self-adjusting pipe. The oil inlet holes correspond one by one, and in the corresponding pipe oil hole and pipe oil inlet hole: the diameter of the pipe oil hole is the same as that of the pipe oil inlet hole, and the axis of the pipe oil hole coincides with the pipe oil inlet hole.

Preferably, the guide vertical rod is connected to the tail pipe through a frame body, the frame body includes at least one horizontal connecting rod, one end of the horizontal connecting rod is fixed to the inner wall of the tail pipe, and the lower end of the guiding vertical rod is connected to the horizontal connecting rod.

Preferably, the oil collection pipeline includes an oil collection main pipe and a transition pipe, one end of the oil collection main pipe communicates with the oil collection tank, the other end of the oil collection main pipe communicates with one end of the transition pipe, and the other end of the transition pipe communicates with the upper end of the core pipe.

As a preference, the oil collection main pipe is provided with an oil collection pump and an oil collection check valve, the pumping direction of the oil collection pump is from the core pipe to the oil collection pump, the discharge direction of the oil collection pump is from the oil collection pump to the oil collection tank, The passage direction of the oil check valve is from the oil collection pump to the oil collection tank, and a liquid inlet on-off valve is arranged between the raw liquid outlet pipe and the tangential liquid inlet pipe.

Preferably, it also includes an electrocoagulation post-treatment structure and a post-treatment pump. The electro-coagulation post-treatment structure includes a treatment container, a post-treatment liquid inlet pipe, a post-treatment liquid outlet pipe, a positive electrode plate, and a negative electrode plate. There are a number of liquid inlet heads connected with the post-treatment liquid inlet pipe, and a number of liquid outlet heads connected with the post-treatment liquid outlet pipe are arranged on the post-treatment liquid outlet pipe. A single arc-shaped partition forms a processing single chamber in the processing container. The single processing chamber corresponds to the liquid inlet head one by one, and the single processing chamber corresponds to the liquid outlet head one by one. The liquid inlet head and the liquid outlet head are in the corresponding In the treatment single chamber, the post-treatment pump is provided with a treatment liquid inlet pipe and a treatment liquid outlet pipe. The inlet end of the treatment liquid pipe extends into the liquid collection tank, and the outlet end of the treatment liquid pipe is connected with the post-treatment liquid inlet pipe.

The beneficial effects of the invention are: high-efficiency separation of oil and water can be realized, the operation is simple, and the equipment can be reused without additional chemical agents, and the overall cost is low; the treatment process is very continuous, no need to pause and switch stations, and the work efficiency is improved. High; continuous separation and automatic oil collection, good treatment effect.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is the enlarged view of place B in Fig. 1;

Fig. 4 Enlarged view of point C in Fig. 1.

In the figure: stock solution tank 1, stock solution extraction pump 11, stock solution inlet pipe 12, stock solution outlet pipe 13, liquid inlet on-off valve 131, liquid collection tank 2, separation cone 3, cone top disc 31, tangential liquid inlet pipe 32 , auxiliary rotation cylinder 33, return hole 331, tail pipe 4, horizontal connecting rod 41, friction block 42, core pipe 5, oil collection tank 51, pipe oil inlet hole 52, self-regulating pipe 53, pipe lower sealing plate 531, floating body 532, floating base 533, guide vertical rod 534, pipe oil hole 535, oil collection main pipe 54, transition pipe 55, oil collection pump 56, oil collection check valve 57, post-processing pump 61, processing container 62, post-processing inlet Liquid pipe 63, liquid inlet head 631, post-treatment liquid outlet pipe 64, liquid outlet head 641, arc-shaped electrode plate 65, inlet processing liquid pipe 66, outlet processing liquid pipe 67, outlet processing liquid on-off valve 671, circulation pump 71 , into the circulating liquid pipe 72, out of the circulating liquid pipe 73, and on-off valve 74 for the circulating liquid.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1: In the embodiment shown in Fig. 1 to Fig. 4, a post-processing device for separating and separating oil and water includes a cyclone separator, a raw liquid tank 1, and a liquid collection tank 2, and the cyclone separator includes a shape of Frustum-shaped separation cone 3, vertical tailpipe 4 connected coaxially with the separation cone, the upper and lower ends of the separation cone are open, the upper and lower ends of the tailpipe are open, the upper opening of the separation cone is larger than the lower opening of the separation cone, and the upper end of the tailpipe The opening communicates with the opening at the lower end of the separation cone, and the opening at the upper end of the separation cone is sealed by a cone top disc 31. The separation cone is provided with a tangential liquid inlet pipe 32 communicating with the inside of the separation cone. The liquid collection tank is located below the tail pipe. Comprising a stock solution extraction pump 11, the stock solution extraction pump is provided with a stock solution inlet pipe 12 communicated with the stock solution extraction pump inlet, a stock solution outlet pipe 13 connected with the stock solution extraction pump outlet, the inlet end of the stock solution pipe stretches into the stock solution tank, The outlet end of the raw liquid pipe is connected with the tangential liquid inlet pipe. The core pipe 5 coaxial with the tail pipe is arranged in the cyclone separator. The upper end is connected to an oil collection tank 51 through an oil collection pipeline. The core pipe is provided with a number of pipe oil inlet holes 52 communicating with the inside of the core pipe, and also includes a circulation pump 71. The circulation pump is provided with an inlet connected to the inlet of the circulation pump. The circulating liquid pipe 72, the circulating liquid pipe 73 connected to the outlet of the circulating pump, the inlet end of the circulating liquid pipe stretches into the sump, the outlet end of the circulating liquid pipe communicates with the tangential liquid inlet pipe, and the circulating liquid pipe A circulating fluid on-off valve 74 is provided on it. The circulating fluid on-off valve is used to control the on-off of the circulating fluid pipe. The axis of the tangential liquid inlet pipe is parallel to a tangential direction of the separation cone. Oily sewage (sea water) is stored in the raw solution tank, and the raw solution extraction pump extracts the raw solution (oily sewage) from the raw solution tank. The tangential liquid inlet pipe is fed into the separation cone tangentially (or approximately tangentially). Because the separation cone is large and the bottom is small, and due to the effect of gravity, the oily sewage starts to spiral in the separation cone, and the overall trend is spiral downward. flow. Due to the density difference between oil and water, when the oily sewage swirls at high speed, the water will relatively adhere to the inner wall of the separation cone, and the oil droplets (oil) will relatively move to the center (closer to the separation cone axis). As the fluid moves downwards as a whole and the cross-section shrinks, the oil continues to move to the center to form an oil core (the core tube is inside the oil core), and the outer layer of the oil core is a "water wall" (a large amount of water and a small amount of oil). . The fluid then enters the closing part (tail pipe), and the fluid will generate back pressure on the upper section, causing the low-pressure oil core to overflow upwards, enter the core pipe from the oil inlet hole of the pipe, and enter the oil collection tank through the oil collection pipeline for further discharge. As for the outer "water wall", it is discharged downward through the lower end opening of the tail pipe into the liquid collection tank, so that the efficient separation of oil and water can be achieved, and the equipment can be reused without additional chemical agents, and the treatment process is very continuous , the overall cost is lower. In addition, when necessary, the circulation pump can extract the treated oily sewage from the sump, and make it pass through the inlet circulation liquid pipe, circulation pump, and outlet circulation liquid pipe to reach the tangential liquid inlet pipe (at this time, the circulation liquid is turned on and off). The valve is opened and the original liquid extraction pump can work or not. When the original liquid extraction pump is not working, it is necessary to cut off the pipeline where the original liquid extraction pump is located to ensure that the fluid flows into the separation cone), and then send it into the separation cone from the tangential liquid inlet pipe In, so that multiple cycles of separation processing can be realized, and the processing effect can be improved.

The separation cone is provided with an auxiliary rotation cylinder 33 with both upper and lower ends open. The rotation assistance cylinder is coaxial with the separation cone. The upper end of the separation cone is sealed and connected with the cone top disc. two-thirds of the height. A number of backflow holes 331 are provided on the top of the cylinder side wall of the spin-assisting cylinder. The existence of the spinner is equivalent to forming an annular channel (between the spinner and the separation cone), which is helpful for the formation of the swirl and can also suppress the upward flow (as mentioned earlier, the oil core formed by the back pressure And a part of the "water wall" attached to the oil core) overflows to form a large amount of disturbance flow, which can improve the stability of the treatment process. However, the local vortex and turbulence formed by the outward diffusion of the upflow still exist, and the setting of the return hole can allow the upflow to rise to the top, and part of it will flow out from the return hole, forming a resistance to the back pressure of the incoming liquid, and controlling the flow as a whole. The balance of the fluid also further improves the regularity and stability of the fluid flow in the separation cone, which can effectively improve the overall oil-water separation effect.

The core tube is provided with a self-regulating tube 53 that can slide up and down relative to the inside of the core tube. The upper and lower ends of the self-regulating tube are both open, and the outer wall of the self-regulating tube and the inner side wall of the core tube are slid and sealed. Outside the tube, the lower end of the self-regulating tube is provided with a tube lower sealing plate 531 that seals the opening of the lower end of the self-regulating tube. Connected guide vertical bar 534, the cross section of the guide vertical bar is rectangular, the guide vertical bar is slidably connected with the floating base, the slidable direction of the floating base is the up and down direction, and there are several self-adjusting tube side walls that are connected to the inside of the self-adjusting tube. Connected pipe oil hole 535, the pipe oil hole corresponds to the pipe oil inlet hole one by one, in the corresponding pipe oil hole and pipe oil inlet hole: the diameter of the pipe oil hole is the same as that of the pipe oil inlet hole The oil hole coincides with the axis of the pipe oil inlet hole. The guide vertical rod is connected with the tail pipe through a frame body, and the frame body includes at least one horizontal connecting rod 41, one end of the horizontal connecting rod is fixed to the inner side wall of the tail pipe, and the lower end of the guiding vertical rod is connected with the horizontal connecting rod. A number of friction blocks 42 fixed to the tail pipe are arranged inside the tail pipe. The friction blocks contact the outer wall of the self-regulating pipe. At the beginning, due to the large oil content of the fluid, part of the floating body contacts water and the rest contacts oil. The buoyancy is not enough to exceed gravity (the gravity of the self-regulating tube, the entire floating body structure, etc.) and friction (mainly the friction between the friction block and the self-regulating tube, and the remaining small part is the friction between the self-regulating tube and the core tube. friction force, etc.), so the self-adjusting tube will not slide up and down, so the total diameter of the oil (the diameter of the oil hole of the tube or the oil inlet hole of the tube, that is, the total diameter of the oil entering the self-regulating tube) remains unchanged, normal Oil out. When the oil content of the fluid decreases (or when the oil content is not high), the oil core will become very thin, the length of the oil core will also decrease (the lower part of the oil core will be replaced by water), and the "water wall" will become Very thick, because the water is too close to the oil inlet hole of the tube at this time, if the oil inlet speed of the self-regulating tube is fast, it is easy to cause water to enter the core tube (self-regulating tube), which will affect the oil content ratio of the collected oil. However, in this solution, when the oil content of the fluid is reduced to a certain extent, since the oil wick becomes shorter, more parts of the floating body contact with water and less parts of the floating body contact with oil, and the buoyancy force on the floating body increases. At a certain moment, The buoyancy exceeds gravity (the gravity of the self-adjusting tube, the entire floating body structure, etc.) and friction (mainly the friction between the friction block and the self-adjusting tube, and the rest is the friction between the self-adjusting tube and the core tube, etc. ), the floating body starts to drive the self-regulating tube to move up, so that the oil hole of the tube and the oil inlet hole of the tube start to misalign, and the total diameter of the oil passing through becomes smaller. Still only the oil enters the self-regulating pipe, so as to avoid part of the water entering the self-regulating pipe due to too fast liquid inlet speed at this time. Correspondingly, the lower the oil content of the fluid, the more the floating body drives the self-adjusting pipe to rise, and the smaller the total diameter of the oil passage, thus realizing the automatic adjustment of the total diameter of the oil passage. Moreover, when the oil content of the fluid is reduced to a certain level, since the floating body drives the self-regulating tube to rise to the limit position (the outside of the floating body is completely surrounded by water, and all the buoyancy on the floating body comes from water), at this time, the oil hole of the pipe and the inlet of the pipe The oil holes are completely staggered, and the oil collection pipeline stops collecting oil, completely blocking the possibility of water entering the oil collection pipeline when the oil content of the fluid is very low.

The oil-collecting pipeline includes an oil-collecting main pipe 54 and a transition pipe 55. One end of the oil-collecting main pipe communicates with the oil collection tank, the other end of the oil-collecting main pipe communicates with one end of the transition pipe, and the other end of the transition pipe communicates with the upper end of the core pipe. The oil collecting main pipe is provided with an oil collecting pump 56 and an oil collecting check valve 57. The liquid pumping direction of the oil collecting pump is from the core pipe to the oil collecting pump, and the liquid discharge direction of the oil collecting pump is from the oil collecting pump to the oil collecting tank. The direction through which the check valve can pass is from the oil collecting pump to the oil collecting tank, and a liquid inlet on-off valve 131 is arranged between the raw liquid outlet pipe and the tangential liquid inlet pipe. The controllability and accuracy of the treatment process can be improved by various pumps and valves.

It also includes an electrocoagulation post-treatment structure and a post-treatment pump 61. The electro-coagulation post-treatment structure includes a treatment container 62, a post-treatment liquid inlet pipe 63, and a post-treatment liquid outlet pipe 64. The post-treatment liquid inlet pipe is provided with several The liquid inlet head 631 connected by the liquid pipe, the post-treatment liquid outlet pipe is provided with a number of liquid outlet heads 641 connected with the post-treatment liquid outlet pipe, and a row of arc-shaped electrode plates 65 is arranged in the processing container, and two adjacent arc-shaped electrodes The plate forms a processing single chamber in the processing container, and the processing single chamber corresponds to the liquid inlet head one by one, and the processing single chamber corresponds to the liquid outlet head one by one, and the liquid inlet head and the liquid outlet head are all in the corresponding processing single chamber , the post-treatment pump is provided with an inlet treatment liquid pipe 66 communicated with the inlet of the after-treatment pump, and an outlet treatment liquid pipe 67 communicated with the outlet of the after-treatment pump. The outlet end of the pipe is connected with the post-treatment liquid inlet pipe, and the treatment liquid outlet pipe is provided with an on-off valve 671 for the treatment liquid. After the above-mentioned separation treatment, the oil content of the discharged treatment liquid is already very low. At this time, if the oil is removed by physical methods, the effect is not obvious. Therefore, the use of electroflocculation can improve the final treatment effect. The electrode plate can be an aluminum-iron alloy plate with an iron content of 10%. Because the Al(OH) ₃ flocculant produced by the pure aluminum electrode plate has a good removal effect on most of the emulsified oil and suspended oil in the oily sewage, and has a poor removal effect on a small part of the dissolved oil (COD) in the oily sewage. The Al-Fe alloy electrode plate will produce Fe ³⁺ with certain oxidizing properties, so it can oxidize the dissolved oil with small molecular structure. The electrode plate can adopt a semicircular vertical flow curved structure, which improves the flocculation efficiency compared with the advection electrode plate structure, and the curved electrode plate can also increase the flow distance of oily sewage in the reactor and increase the reaction time of oily sewage, so It can fully remove oil and pollutants in oily sewage. The electrode plate can exchange the positive and negative electrodes every other time to avoid the power loss caused by the electrolysis of water caused by concentration polarization near the electrode plate.

Claims (9)

1. greasy dirt moisture takes off an after-treatment device, it is characterized in that, including cyclone separator, stoste groove, collecting tank, Described cyclone separator include separating cone, with separate that cone is coaxial to be connected and vertical tail pipe, separate cone above, The equal opening in lower end, the equal opening of tail pipe upper and lower end, separate cone upper end open more than separating cone lower ending opening, Tail pipe upper end open connects with separating cone lower ending opening, separates cone upper end open and is sealed by a vertex of a cone plectane, Separating the tangential direction pipe that cone is provided with and separates the internal connection of cone, collecting tank is in below tail pipe, also wraps Including a stoste draw-off pump, stoste draw-off pump is provided with into stoste pipe, goes out stoste pipe, enters the import of stoste pipe End stretches in stoste groove, and the port of export going out stoste pipe connects with tangential direction pipe, is provided with in cyclone separator The core pipe coaxial with tail pipe, core pipe upper end is through vertex of a cone plectane and stretches out outside cyclone separator, core pipe upper end Being connected to an accumulator tank by oil-collecting pipeline, core pipe is provided with some pipe fuel feed holes of connecting internal with core pipe, Also including a circulating pump, circulating pump is provided with into circulation fluid pipe, goes out circulation fluid pipe, enters entering of circulation fluid pipe Mouth end stretches in collecting tank, and the port of export going out circulation fluid pipe connects with tangential direction pipe, goes out on circulation fluid pipe It is provided with circulation fluid on-off valve.

A kind of greasy dirt moisture the most according to claim 1 takes off after-treatment device, it is characterized in that, described separation is bored Inside be provided with the equal opening of upper and lower end helps rotation cylinder, described in help rotation cylinder with separate cone coaxial, help rotation cylinder upper end and It is tightly connected between vertex of a cone plectane, helps rotation cylinder height more than separating 2/3rds of cone height.

A kind of greasy dirt moisture the most according to claim 1 takes off after-treatment device, it is characterized in that, described in help rotation cylinder Cylinder top side wall be provided with some return ports.

A kind of greasy dirt moisture the most according to claim 1 takes off after-treatment device, it is characterized in that, described tangentially enters Liquid pipe axis is tangential parallel with separate cone one.

5. take off after-treatment device according to a kind of greasy dirt moisture described in claim 1 or 2 or 3, it is characterized in that, institute The self-regulated pipe joint that can relatively slide up and down in core pipe it is provided with in stating core pipe, the equal opening of self-regulated pipe joint upper and lower end, Between self-regulated pipe joint lateral wall with core pipe madial wall, slipper seal coordinates, and self-regulated pipe joint lower end is stretched out outside core pipe, Self-regulated pipe joint lower end is provided with shrouding under the pipe sealing self-regulated pipe joint lower ending opening, and the lower shrouding of pipe is provided with buoyancy aid, Buoyancy aid is provided with floating foundation seat, is provided with the guiding montant being connected with tail pipe in tail pipe, guide montant cross section in Rectangle, guides montant and is slidably connected with floating foundation seat, and self-regulation tube side wall is provided with in some and self-regulated pipe joint The pipe oil through of portion's connection, pipe oil through and pipe fuel feed hole one_to_one corresponding, at corresponding pipe oil through and pipe In fuel feed hole: pipe oil through aperture is identical with pipe fuel feed hole aperture, pipe oil through and pipe fuel feed hole axis weight Close.

A kind of greasy dirt moisture the most according to claim 5 takes off after-treatment device, it is characterized in that, described guiding is erected Bar is connected with tail pipe by support body, and described support body includes at least horizontal connecting rod, horizontal connecting rod one end and Tail pipe madial wall is fixed, and guides montant lower end and is connected with horizontal connecting rod.

7. take off after-treatment device according to a kind of greasy dirt moisture described in claim 1 or 2 or 3, it is characterized in that, institute Stating oil-collecting pipeline and include oil-collecting supervisor, transition connecting pipe, oil-collecting is responsible for one end and is connected with accumulator tank, oil-collecting master The pipe other end connects with transition connecting pipe one end, and the transition connecting pipe other end connects with core pipe upper end.

A kind of greasy dirt moisture the most according to claim 7 takes off after-treatment device, it is characterized in that, described oil-collecting master Pipe is provided with collection oil pump, oil-collecting check valve, and the drawing liquid direction of collection oil pump is to collecting oil pump by core pipe, oil-collecting The discharge opeing direction of pump is to accumulator tank by collection oil pump, and Tong Guo the direction of oil-collecting check valve is by collection oil pump extremely Accumulator tank, goes out and is provided with feed liquor on-off valve between stoste pipe and tangential direction pipe.

A kind of greasy dirt moisture the most according to claim 1 takes off after-treatment device, it is characterized in that, also includes electricity wadding Solidifying post processing structure, post processing pump, electricity flocculation post processing structure include processing container, post processing feed tube, Post processing drain pipe, post processing feed tube is provided with some liquid inlet head connected with post processing feed tube, after Process drain pipe and be provided with some liqiud outlet heads connected with post processing drain pipe, process in container and be provided with a row Arc-shaped electrode plate, adjacent two blocks of arc-shaped electrode plates surround a process single-chamber in processing container, process single-chamber With liquid inlet head one_to_one corresponding, processing single-chamber and liqiud outlet head one_to_one corresponding, it is right that liquid inlet head, liqiud outlet head are all in In the process single-chamber answered, post processing pump is provided with into treatment fluid pipe, goes out treatment fluid pipe, enters treatment fluid pipe Entrance point stretches in collecting tank, and the port of export going out treatment fluid pipe connects with post processing feed tube.