CN108217917B - Electrochemical membrane biological sewage treater - Google Patents
Electrochemical membrane biological sewage treater Download PDFInfo
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- CN108217917B CN108217917B CN201810069789.4A CN201810069789A CN108217917B CN 108217917 B CN108217917 B CN 108217917B CN 201810069789 A CN201810069789 A CN 201810069789A CN 108217917 B CN108217917 B CN 108217917B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Abstract
The embodiment of the invention discloses an electrochemical membrane biological sewage treatment device, which comprises: a treatment tank; the device comprises a first electrode, a sacrificial electrode and a second electrode which are arranged in the treatment tank in sequence along a first direction, wherein the activity of the sacrificial electrode is greater than that of the first electrode and that of the second electrode; a membrane assembly disposed within the treatment basin, the membrane assembly disposed between the first electrode and the sacrificial electrode, and/or the membrane assembly disposed between the sacrificial electrode and the second electrode; and the power supply module is electrically connected with the first electrode and the second electrode. Compared with the existing sewage treatment device, the electrochemical membrane biological sewage treatment device provided by the embodiment of the invention can simultaneously improve the quality of the treated sewage and slow down membrane pollution.
Description
Technical Field
The embodiment of the invention relates to drinking water or sewage treatment technology, in particular to an electrochemical membrane biological sewage treatment device.
Background
Domestic sewage is sewage produced in the production process of human beings, is a main pollution source of water, and mainly comprises excrement and washing sewage. With the rapid development of social economy and the increase of population, the discharge of domestic sewage is larger and larger, which becomes a serious obstacle to the economic development and the improvement of the life quality of people, and people face a severe test of dual water shortage of resource property and water quality property.
As a sewage treatment technology organically combining membrane separation and biotechnology, a Membrane Bioreactor (MBR) has the advantages of good effluent quality, high system treatment efficiency, high load rate, compact structure, small occupied area, convenience for automatic control and the like, is a high-efficiency biological treatment technology, and has great development prospects in the aspects of sewage treatment and recycling. However, membrane flux is reduced due to membrane pollution, and the cleaning and replacement frequency of the membrane is increased, which directly affects the efficiency and the service life of the membrane component, thereby becoming a main obstacle for popularization and application of the water treatment technology of the membrane bioreactor.
Electrochemistry (comprising electrooxidation, electroflocculation, electroflotation and the like) is used as an efficient water treatment technology, and has the advantages of simple operation, small sludge production, no use of chemicals, easy realization of automation and equipment control and the like. However, with the increasing pollution situation and the stricter water quality standard, the sewage treated by the electrochemical technology can not reach the water quality discharge standard.
Disclosure of Invention
The invention provides an electrochemical membrane biological sewage processor, which aims to simultaneously improve the quality of effluent and slow down membrane pollution.
The embodiment of the invention provides an electrochemical membrane biological sewage treatment device, which comprises:
a treatment tank;
the device comprises a first electrode, a sacrificial electrode and a second electrode which are arranged in the treatment tank in sequence along a first direction, wherein the activity of the sacrificial electrode is greater than that of the first electrode and that of the second electrode;
a membrane assembly disposed within the treatment basin, the membrane assembly disposed between the first electrode and the sacrificial electrode, and/or the membrane assembly disposed between the sacrificial electrode and the second electrode;
and the power supply module is electrically connected with the first electrode and the second electrode.
Further, the sacrificial electrode is an aluminum plate or an iron plate.
Further, the first electrode and the second electrode are titanium-based ruthenium-iridium coated electrodes and oxygen evolution electrodes.
Further, the first electrode and the second electrode are titanium substrate ruthenium iridium coating electrodes or titanium substrate manganese dioxide coating electrodes.
Further, the working stage of the electrochemical membrane biological sewage treatment device comprises a first stage and a second stage;
the first stage and the second stage are alternately arranged along the time sequence;
in the first stage, the potential of the first electrode is higher than that of the second electrode;
in the second phase, the potential of the second electrode is higher than the potential of the first electrode.
Further, the membrane module is a flat membrane or a curtain type hollow fiber membrane.
Further, the device also comprises an aeration module;
the aeration module comprises an air duct and an air conveying unit;
one end of the gas guide pipe is connected with the gas output end of the gas transmission unit, and the other end of the gas guide pipe extends into the treatment pool.
Further, the device also comprises a clean water discharging module;
the clean water discharging module comprises a clean water tank and a first guide pipe;
one end of the first flow guide pipe extends into the clear water tank, and the other end of the first flow guide pipe extends into the treatment tank and is connected with the membrane module.
Further, the device also comprises a raw water supply module;
the raw water supply module comprises a raw water tank and a second flow guide pipe;
one end of the second flow guide pipe extends into the raw water tank, and the other end of the second flow guide pipe extends into the treatment tank.
Further, the raw water supply module further comprises a liquid level adjusting unit;
the liquid level adjusting unit is connected between the original water tank and the second flow guide pipe so as to adjust the height of the liquid level in the treatment tank.
In the embodiment of the invention, a first electrode, a sacrificial electrode and a second electrode which are sequentially arranged along a first direction are arranged in a treatment tank, and the activity of the sacrificial electrode is greater than that of the first electrode and that of the second electrode; and a membrane module is arranged in the treatment tank, the membrane module is arranged between the first electrode and the sacrificial electrode, and/or the membrane module is arranged between the sacrificial electrode and the second electrode, so that the problem that the conventional sewage treatment equipment cannot meet the sewage treatment requirement is solved, and the effects of improving the quality of effluent and slowing down membrane pollution are realized.
Drawings
FIG. 1 is a schematic structural diagram of an electrochemical membrane biological sewage treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the electrochemical membrane biological wastewater processor of FIG. 1 at an operating stage;
fig. 3 is a schematic structural diagram of an electrochemical membrane biological sewage treatment device according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of an electrochemical membrane biological sewage treatment device according to an embodiment of the present invention. Referring to fig. 1, the electrochemical membrane biological sewage treatment apparatus includes: the membrane module comprises a processing pool 11, a first electrode 12, a sacrificial electrode 13 and a second electrode 14 which are arranged in the processing pool 11 in sequence along a first direction (X-axis direction in figure 1), a membrane module 15 arranged in the processing pool 11 and a power supply module 16. Wherein the sacrificial electrode 13 has a higher activity than the first electrode 12 and the second electrode 14. The diaphragm assembly 15 is disposed between the first electrode 12 and the sacrificial electrode 13, and the diaphragm assembly 15 is also disposed between the sacrificial electrode 13 and the second electrode 14. The power supply module 16 is electrically connected to both the first electrode 12 and the second electrode 14 to form a potential difference between the first electrode 12 and the second electrode 14.
In the technical scheme of the embodiment, the first electrode 12, the sacrificial electrode 13 and the second electrode 14 are arranged in the treatment tank 11 in sequence along the first direction (the X-axis direction in fig. 1), and the membrane module 15 is arranged between the first electrode 12 and the sacrificial electrode 13, and between the sacrificial electrode 13 and the second electrode 14, so that the electrocoagulation and the membrane bioreactor are substantially and organically integrated into the same treatment tank 11, and a water treatment process (eMBR) in which an electrochemical strengthening technology and a membrane bioreactor technology are organically combined is formed. In this device, the electric field between the first electrode 12 and the second electrode 14 can generate electrocatalysis, activate or enhance the activity of certain enzymes, stimulate cell growth, regulate microbial metabolism, and thus effectively change the performance of the sludge mixed liquor. Under the control of the electric field, the polarized flocs formed by the electric flocculation reaction are accumulated on the surface of the membrane module 15 to form a loose and porous polarized filter cake layer. The liquid in the treatment tank 11 can reach the membrane module 15 after passing through the polarized filter cake layer, and the polarized filter cake layer can play a role in filtering, so that small particles of pollutants are prevented from blocking membrane holes, and the pollution of the membrane module 15 is favorably slowed down. Meanwhile, the anode (the electrode with higher potential in the first electrode and the second electrode is the anode) also has an oxidation effect, so that the substances which are difficult to biodegrade can be further degraded, and the effluent quality of the membrane component 15 can be improved. The gas generated by electrolysis at the cathode (the electrode with lower potential of the first electrode and the second electrode is the cathode, and the surface with lower potential of the sacrificial electrode is the cathode) can generate cleaning effect on the surface of the membrane module 15, and can also generate an oxygen-deficient environment near the cathode to further enhance the removal of nitrate nitrogen through the denitrification of microorganisms. In conclusion, under the multiple composite treatment of the effects of an electric field, coagulation, oxidation, air floatation, microbial digestion and absorption and the like, the pollution of the membrane component 15 can be effectively relieved, and the effluent quality can be improved.
It should be noted that, in the above technical solution, referring to fig. 1, the diaphragm assembly 15 is disposed between the first electrode 12 and the sacrificial electrode 13, and the diaphragm assembly 15 is also disposed between the sacrificial electrode 13 and the second electrode 14, which is only a specific example of the present application and is not a limitation of the present application. Alternatively, it is also possible to dispose the membrane module 15 only between the first electrode 12 and the sacrificial electrode 13; or the membrane module 15 may be provided only between the sacrificial electrode 13 and the second electrode 14.
In practice, there may be many choices of the material of the sacrificial electrode 13 as long as it is ensured that the activity of the sacrificial electrode 13 is greater than that of the first electrode 12 and the second electrode 14. Illustratively, the sacrificial electrode 13 is an aluminum plate or an iron plate. Therefore, in the electrolysis process, aluminum ions or iron ions and hydrolysis products thereof dissolved out by the sacrificial electrode 13 can remove nitrogen, phosphorus, colloid and refractory macromolecular substances in the sludge mixed liquor, promote small particles in the mixed liquor to flocculate to form larger particles, reduce the blockage of pollutants on membrane pores and improve the filtering performance of the mixed liquor.
It should be noted that, compared with the mode in which the aluminum plate or the iron plate is directly used as the anode, in the above technical solution, the aluminum plate or the iron plate is used only as the sacrificial electrode 13, and the mode of electrolyzing the aluminum plate or the iron plate to release aluminum ions or iron ions is milder, so that the phenomenon that large aluminum blocks or iron blocks fall off from the sacrificial electrode 13 due to long-term electrolysis can be effectively prevented, and the purpose of saving cost is achieved.
Similarly, in practice, the materials of the first electrode 12 and the second electrode 14 may be selected in many ways, as long as the reactivity of both the first electrode 12 and the second electrode 14 is ensured to be less than that of the sacrificial electrode 13. Optionally, the first electrode 12 and the second electrode 14 are both oxygen evolution electrodes. Here, the oxygen evolution electrode is an electrode capable of generating oxygen in the vicinity of the electrode. The device can increase the dissolved oxygen in the treatment tank 11, enhance the metabolic activity of microorganisms, and also can disturb the liquid in the treatment tank 11, thereby improving the sewage treatment efficiency. Illustratively, the first electrode 12 and the second electrode 14 are titanium-based ruthenium iridium coated electrodes or titanium-based manganese dioxide coated electrodes. The ruthenium-iridium coated electrode with the titanium substrate is formed by coating a ruthenium-iridium coating on the titanium substrate. Similarly, a titanium base manganese dioxide coated electrode refers to an electrode formed by coating a titanium base with a manganese dioxide coating. The arrangement can increase the difference of oxygen and chlorine and inhibit the Cl of the anode2Generation of, weakening of Cl2Toxic effects on microorganisms. Wherein, "increasing the difference between oxygen and chlorine" means: the overpotential difference of the two reactions of oxygen evolution and chlorine evolution is enlarged, namely, the overpotential of the oxygen evolution reaction is reduced and the overpotential of the chlorine evolution reaction is increased. In addition, the anode not only has an oxidation effect, but also can generate a large amount of oxygen, so that the dissolved oxygen in the treatment tank 11 is increased, the metabolic activity of microorganisms is enhanced, the liquid in the treatment tank 11 can be disturbed, and the sewage treatment efficiency is improved.
FIG. 2 is a schematic diagram of the electrochemical membrane biological sewage treatment device in FIG. 1 at an operation stage. Referring to fig. 1 and 2, the working phase M of the electrochemical membrane biological sewage treatment device comprises a first phase a and a second phase B. The first phase a and the second phase B alternate in time sequence. In the first stage a, the potential of the first electrode 12 is higher than that of the second electrode 14, and the first electrode 12 is an anode and the second electrode 14 is a cathode. In the second stage B, the potential of the second electrode 12 is higher than that of the first electrode 14, and the second electrode 14 is an anode and the first electrode 12 is a cathode. The alternating arrangement of the first stage a and the second stage B can prevent the passivation of the electrodes (including the first electrode 12 and the second electrode 14), increase the current efficiency, change the direction of the electric field between the electrodes, reduce the membrane pollution, and prolong the service life of the membrane module 15.
Optionally, in order to improve the sewage treatment efficiency of the electrochemical membrane biological sewage treatment device provided by the present application, the first electrode 12, the sacrificial electrode 13 and the second electrode 14 are all flat plates, and the planes of the first electrode 12, the sacrificial electrode 13 and the second electrode 14 are all perpendicular to the first direction (X-axis direction in fig. 1).
In the above technical solution, optionally, the membrane module 15 is a flat membrane or a curtain type hollow fiber membrane. Further, in order to make the membrane module 15 have better filtering performance, the membrane in the membrane module 15 is a micro-filtration membrane or an ultrafiltration membrane.
Optionally, with continued reference to fig. 1, the electrochemical membrane biological wastewater processor further comprises a support assembly 20, the support assembly 20 being connected to each of the mold assembly 15, the first electrode 12, the sacrificial electrode 13 and the second electrode 14 to fix the positions of the mold assembly 15, the first electrode 12, the sacrificial electrode 13 and the second electrode 14.
Example two
Fig. 3 is a schematic structural diagram of the electrochemical membrane biological sewage treatment device provided in the second embodiment. Compared with the first embodiment, the present embodiment further includes an aeration module. Specifically, referring to fig. 3, in the electrochemical membrane biological sewage treatment apparatus, the aeration module 17 includes a gas guide tube 171 and a gas transmission unit 172. One end of the gas pipe 171 is connected to the gas output end of the gas delivery unit 172, and the other end thereof extends into the processing bath 11. Through set up aeration module 17 in the biological sewage treatment ware of electrochemistry membrane, can be under the effect of air current, provide the disturbance effect and increase the dissolved oxygen in the treatment tank 11 to the liquid in the treatment tank 11, not only be favorable to making the liquid in the treatment tank fully take place the electric flocculation reaction to promote the liquid in the treatment tank 11 and fully contact with the microorganism, with improvement sewage treatment efficiency.
Optionally, the gas delivery unit 172 is a blower or an air compressor.
In order to make the gas disturbance of the liquid in the treatment tank more pronounced, referring to fig. 3, the part of the gas-conducting tube 171 extending into the liquid in the treatment tank 11 is optionally provided with a plurality of openings 1711, so that the gas can be disturbed in different positions in the treatment tank 11. Further, a gas flow meter 173 may be disposed between the gas guiding tube 171 and the gas transmission unit 172, so as to help a worker judge the current disturbance situation of the gas in the processing tank 11 to the liquid through the data reflected by the gas flow meter 173.
With continued reference to fig. 3, the electrochemical membrane biological wastewater processor may optionally further include a clean water discharge module 18; the clean water discharge module 18 includes a clean water reservoir 181 and a first flow conduit 182. One end of the first draft tube 182 extends into the clean water tank 181, and the other end extends into the treatment tank 11 and is connected with the membrane module 15. The arrangement can make the treated sewage (namely clean water) flow into the clean water tank 181, and is beneficial to the recovery and recycling of the clean water.
Optionally, the clean water discharge module 18 may further comprise a water quality detection unit for detecting a water quality parameter of the clean water. The device can recycle the treated sewage (namely, clear water) to the clear water tank 181 under the condition that the water quality parameter reaches the standard, which is beneficial to the recycling of the clear water so as to reduce the pollution of the sewage to rivers, lakes and the like to the minimum. Wherein, the water quality parameters comprise indexes such as biochemical oxygen demand, ammonia nitrogen, nitrate, total phosphorus, non-biodegradable toxic substance content and the like.
Optionally, with continued reference to fig. 3, the electric field enhanced membrane biological wastewater processor may further include a transmembrane pressure (TMP) detection unit 183. The transmembrane pressure difference (TMP) detecting unit 183 is connected to the membrane module 15, and detects a permeation performance of the membrane module 15.
With continued reference to fig. 3, optionally, a liquid flow meter 185 may be disposed between the water quality detecting unit 183 and the first flow guiding pipe 182, so as to help the staff judge the discharging speed of the current clean water from the treating tank 11 according to the data reflected by the liquid flow meter 185.
With continued reference to fig. 3, optionally, the electrochemical membrane biological sewage processor may further include a raw water supply module; the raw water supply module includes a raw water tank 191 and a second draft tube 192. One end of the second flow guide pipe 192 extends into the raw water tank 191, and the other end extends into the treatment tank 11, so as to timely inject raw water into the treatment tank 11 according to the sewage treatment condition of the treatment tank 11. Here, "raw water" refers to sewage that has not been subjected to purification treatment.
Optionally, the raw water supply module may further include a liquid level adjusting unit 193, and the liquid level adjusting unit 193 is connected between the raw water tank 191 and the second diversion pipe 192 to adjust a height of a liquid level in the treatment tank 11, so that an amount of sewage in the treatment tank 11 is a maximum amount that the treatment tank 11 can treat, thereby improving sewage treatment efficiency.
The technical scheme of the embodiment integrates electrochemistry and membrane bioreactor technology, not only can shorten the sewage treatment process flow, degrade organic matters difficult to biodegrade and deeply purify water quality, but also can realize full-automatic operation and has good synergistic effect. The sludge property is regulated and controlled through the electrochemical action, the filtering performance of the membrane module is optimized, and the membrane module pollution can be slowed down and the effluent quality of the membrane module can be improved under the composite actions of an electric field, coagulation, oxidation, microbial digestion and absorption and the like.
The electrochemical membrane biological sewage treatment device provided by the embodiment can determine the optimal reaction condition of the reaction device according to the characteristics of the sludge mixed liquid, the floc form and the response relation between the floc form and the membrane surface for different types of sewage, and can purify the sewage.
The method for debugging the electrochemical membrane biological wastewater treatment apparatus will be described in detail below with reference to fig. 3, but the present invention is not limited thereto. Specifically, referring to fig. 3, the method for debugging the electrochemical membrane biological sewage treatment device comprises the following steps:
firstly, the power supply module 16 is started to operate the electrochemical membrane biological sewage processor, wherein the value range of the current density in the processing pool 11 is 1-300A/cm2The value range of the electric field intensity is 5-300V/m, and the value range of the pressure in the treatment tank 11 is 30-100 kPa.
In the actual sewage treatment process, the conditions of raw water (i.e., the water quality parameters of raw water) are different, and the values of current density and electric field intensity are different when the raw water is treated. When the sewage treatment is actually performed, the conditions may be specifically set according to the conditions of the raw water.
Secondly, setting time at intervals, detecting the characteristics of the sludge and the water quality parameters in the treatment tank 11 until the water quality in the treatment tank 11 reaches the discharge standard. Wherein the characteristics of the sludge comprise the shape, compactness and the like of the sludge. The detection parameters include biochemical oxygen demand, ammonia nitrogen, nitrate, total phosphorus, non-biodegradable toxic substance content and the like, Mixed Liquor Suspended Solids (MLSS), Soluble Microbial Product (SMP) and Sludge Volume Index (SVI).
And finally, recording all parameters and recording an equipment operation maintenance record book.
Technical advantages of this embodiment include:
the electric field formed between the electrode plates can generate electrocatalysis, activate or enhance the activity of certain enzymes, stimulate the growth of cells and regulate the metabolism of microorganisms, thereby effectively improving the performance of sludge mixed liquor.
Secondly, under the action of the electric field, the charged pollutants move in the electric field and are subjected to flocculation reaction with metal cations electrolyzed by the sacrificial electrode, so that small particles in the mixed solution are promoted to flocculate to form larger particles and are accumulated on the surface of the membrane component to form a loose and porous polarized filter cake layer, and the pollution of the membrane component is favorably relieved. And the gas generated by electrolysis at the cathode can clean the surface of the membrane module, thereby being beneficial to further slowing down the pollution of the membrane module.
Thirdly, nitrate radical, phosphate radical and biochemical oxygen demand in sewage can be removed by the flocculation of the electrolysis cations of the sacrificial electrode, and the quality of MBR effluent water is further improved. In addition, flocculation can improve the sludge structure, improve the settleability of the sludge, and prevent the sludge from swelling.
Fourthly, because hydrogen is generated near the cathode, a local anoxic environment can be formed, the denitrification of denitrifying bacteria is promoted, and the removal of nitrate nitrogen is further promoted. In the vicinity of the anode, a large amount of oxygen is generated by electrolysis, which increases dissolved oxygen in the vicinity of the anode, improves the metabolic activity of microorganisms, and improves the sewage treatment efficiency. And the anode can also oxidize, decompose or convert complex pollutants into easily biodegradable substances, so that the quality of the effluent is further improved.
Fifth, the electrochemical membrane biological sewage treatment ware that this application provided gathers degree height, and area is little, need not plus medicament, no secondary pollution. Compared with a device combining a membrane bioreactor with other technologies, the device has lower investment and running cost under the condition of reaching the same effluent quality. Compared with the prior sewage treatment device, under the condition of reaching the same effluent quality, the device can save at least 50 percent of occupied space and about 30 to 50 percent of investment cost.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. An electrochemical membrane biological sewage treatment device, comprising:
a treatment tank;
the device comprises a first electrode, a sacrificial electrode and a second electrode which are arranged in the treatment tank in sequence along a first direction, wherein the activity of the sacrificial electrode is greater than that of the first electrode and that of the second electrode;
the first electrode and the second electrode are oxygen evolution electrodes;
the first electrode and the second electrode are titanium substrate ruthenium iridium coating electrodes or titanium substrate manganese dioxide coating electrodes;
a membrane assembly disposed within the treatment basin, the membrane assembly disposed between the first electrode and the sacrificial electrode, and/or the membrane assembly disposed between the sacrificial electrode and the second electrode;
and the power supply module is electrically connected with the first electrode and the second electrode.
2. The electrochemical membrane biological sewage processor of claim 1,
the sacrificial electrode is an aluminum plate or an iron plate.
3. The electrochemical membrane biological wastewater processor of claim 1, wherein the working phases of the electrochemical membrane biological wastewater processor comprise a first phase and a second phase;
the first stage and the second stage are alternately arranged along the time sequence;
in the first stage, the potential of the first electrode is higher than that of the second electrode;
in the second phase, the potential of the second electrode is higher than the potential of the first electrode.
4. The electrochemical membrane biological sewage processor of claim 1,
the membrane module is a flat membrane or a curtain type hollow fiber membrane.
5. The electrochemical membrane biological wastewater processor of claim 1, further comprising an aeration module;
the aeration module comprises an air duct and an air conveying unit;
one end of the gas guide pipe is connected with the gas output end of the gas transmission unit, and the other end of the gas guide pipe extends into the treatment pool.
6. The electrochemical membrane biological sewage processor of claim 1, further comprising a clean water discharge module;
the clean water discharging module comprises a clean water tank and a first guide pipe;
one end of the first flow guide pipe extends into the clear water tank, and the other end of the first flow guide pipe extends into the treatment tank and is connected with the membrane module.
7. The electrochemical membrane biological sewage processor of claim 1, further comprising a raw water supply module;
the raw water supply module comprises a raw water tank and a second flow guide pipe;
one end of the second flow guide pipe extends into the raw water tank, and the other end of the second flow guide pipe extends into the treatment tank.
8. The electrochemical membrane biological sewage processor of claim 7, wherein the raw water supply module further comprises a liquid level adjusting unit;
the liquid level adjusting unit is connected between the original water tank and the second flow guide pipe so as to adjust the height of the liquid level in the treatment tank.
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