An electro-flocculation membrane bioreactor and a wastewater treatment method thereof

Abstract

The invention relates to the technical field of sewage treatment, and discloses an electric flocculation membrane bioreactor and a sewage treatment method thereof. A first artificial wetland introduces sewage in the first artificial wetland into a pre-filter box through a first pipeline component, and the sewage is filtered through the pre-filter box. The pre-filter box introduces the filtered sewage into a regulating tank through a second pipeline component; an anaerobic tank converts insoluble organic matter in the sewage into soluble organic matter through biological fillers inside the anaerobic tank, and the anaerobic tank is connected to an aerobic tank through a fourth pipeline component, and the aerobic tank is used to remove organic matter in the sewage; the positive and negative flocculation electrodes of the invention generate a large amount of cations and flocculate and precipitate suspended matter in the sewage water body, so as to achieve the effect of purifying and removing pollutants in the water body; the clarified liquid in the first sedimentation tank and the second sedimentation tank is circulated and introduced into the anaerobic tank, so as to achieve the re-circulation treatment of the clarified liquid, and further improve the sewage treatment effect.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an electro-flocculation membrane bioreactor and a sewage treatment method thereof. Background Art

[0002] The essence of sewage treatment is to separate and transform pollutants in water, and most of the final products of transformation need to be separated and removed, so separation is a very important part of the sewage treatment process, which directly affects the effect and cost of treatment. The sewage treatment station reuses the sewage as reclaimed water after it meets the standards. The water quality after treatment by the sewage treatment device in the existing sewage treatment station does not meet the standards, especially the removal of impurities in the sewage does not meet the standards. The surfaces of the various components in the sewage treatment device adsorb impurities and cannot be cleaned, causing it to be unable to work normally. To this end, we have introduced an electro-flocculation membrane bioreactor and a sewage treatment method thereof. Summary of the invention

[0003] The object of the present invention is to provide an electro-flocculation membrane bioreactor and a wastewater treatment method thereof to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An electro-flocculation membrane bioreactor comprises a first artificial wetland, a second artificial wetland and an aeration assembly, wherein the first artificial wetland introduces sewage in the first artificial wetland into a pre-filter box through a first pipeline assembly, the sewage is filtered through the pre-filter box, and the pre-filter box introduces the filtered sewage into a regulating tank through a second pipeline assembly;

[0006] The regulating tank is connected to the anaerobic tank through the third pipeline assembly. The anaerobic tank converts the insoluble organic matter in the sewage into soluble organic matter through the biological filler inside the anaerobic tank. The anaerobic tank is connected to the aerobic tank through the fourth pipeline assembly. The aerobic tank is used to remove organic matter in the sewage.

[0007] The aerobic tank is connected to the reactor via a fifth pipeline assembly, and the reactor is equipped with positive and negative flocculation electrodes for performing electric flocculation treatment on the sewage;

[0008] The reactor is respectively connected to the first sedimentation tank and the spray box through the sixth pipeline assembly, and the first sedimentation tank is connected to the reactor and the pre-filter box through the seventh pipeline assembly, so as to backwash the reactor and the pre-filter box with the clarified liquid of the first sedimentation tank;

[0009] The aerobic tank is connected to the second sedimentation tank through an eighth pipeline assembly, and the first sedimentation tank and the second sedimentation tank are connected to the anaerobic tank through a ninth pipeline assembly, for circulating the clarified liquid in the first sedimentation tank and the second sedimentation tank into the anaerobic tank;

[0010] The anaerobic tank introduces the biogas generated in the anaerobic tank into the biogas furnace through the tenth pipeline for combustion, introduces the clarified liquid in the first sedimentation tank into the jacket of the biogas furnace, heats the clarified liquid in the jacket, and then introduces it into the drying room through the eleventh pipeline for drying the sludge collected in the first sedimentation tank and the second sedimentation tank;

[0011] The heated clarified liquid is also introduced into the spray box through the twelfth pipeline to be mixed and heated with the sewage introduced into the spray box by the reactor to remove the odor in the sewage, and then the sewage is introduced into the second artificial wetland through the thirteenth pipeline assembly at the bottom of the spray box;

[0012] The aeration assembly is used to introduce high-pressure air into the pre-filter box, the regulating tank, the aerobic tank and the reactor.

[0013] Preferably, the pre-filter box comprises a pre-box body and a plurality of groups of filter grilles installed inside the pre-box body, and a sewage pipe is also provided at the bottom of the pre-box body;

[0014] The first pipeline assembly includes a first pipeline connected between the first artificial wetland and the front box and a first water pump installed on the first pipeline;

[0015] The second pipeline assembly includes a second pipeline connected between the front tank and the regulating tank and a second water pump installed on the second pipeline.

[0016] The anaerobic tank comprises a first tank body, and the biological filler is arranged in the first tank body;

[0017] The third pipeline assembly includes a third pipeline connected between the regulating tank and the first tank body and a third water pump installed on the third pipeline;

[0018] The aerobic pool comprises a second pool body, an inclined plate installed at the front end of the second pool body, a plurality of water guide grooves are arranged on the upper surface of the inclined plate, a servo motor is fixed on the mounting plate at the top of the second pool body, and a stirring rod is fixed on the output end of the servo motor after passing through the mounting plate;

[0019] The fourth pipeline assembly includes a fourth pipeline connected between the first tank body and the aerobic tank, a fourth water pump installed on the fourth pipeline, and a water distribution pipe connected to the rear end of the fourth pipeline. The water distribution pipe is arranged above the inclined plate, and a plurality of water outlet holes are evenly distributed at the lower end of the water distribution pipe.

[0020] Preferably, the reactor comprises a reaction tank body and a plurality of groups of positive and negative flocculation electrodes arranged inside the reaction tank body;

[0021] The fifth pipeline assembly includes a fifth pipeline connected between the second tank body and the reaction tank body and a fifth water pump installed on the fifth pipeline;

[0022] The eighth pipeline assembly includes an eighth pipeline connected between the second tank body and the top of the second sedimentation tank and an eighth water pump installed on the eighth pipeline;

[0023] The ninth pipeline assembly includes a ninth pipeline connected to the top of the first tank body and a ninth water pump installed on the ninth pipeline. The end of the ninth pipeline is connected to the second sedimentation tank through a first branch pipe, and the end of the ninth pipeline is also connected to the first sedimentation tank through a second branch pipe.

[0024] Preferably, the sixth pipeline assembly includes a sixth pipeline connected between the rear end of the reaction tank body and the top of the first sedimentation tank, a sixth water pump installed on the sixth pipeline, a spray pipeline connected between the sixth pipeline and the top of the spray box, and a solenoid valve and a spray water pump installed on the spray pipeline;

[0025] The thirteenth pipeline assembly includes a thirteenth pipeline connected between the second artificial wetland and the bottom of the spray box and a thirteenth water pump installed on the thirteenth pipeline.

[0026] The seventh pipeline assembly includes a water diversion pipe extending into the upper part of the first sedimentation tank, a seventh pipeline connected to the end of the water diversion pipe, a seventh water pump installed at the connection between the water diversion pipe and the seventh pipeline, and a plurality of groups of first flushing pipes and a plurality of groups of second flushing pipes installed on the seventh pipeline;

[0027] A plurality of groups of first flushing pipes are connected to the bottom of the side of the front box body, and a plurality of groups of second flushing pipes are connected to the side of the reaction tank body.

[0028] Preferably, the aeration assembly includes a high-pressure gas tank, a first gas pipe connected to the side of the high-pressure gas tank, and a second gas pipe connected to the first gas pipe;

[0029] The second air pipe is connected to a fourth air pipe through the third air pipe, and the fourth air pipe is connected to the top of the filter grid;

[0030] The second air pipe is connected to the first aeration pipe in the regulating tank through the fifth air pipe;

[0031] The second air pipe is connected to the second aeration pipe in the second tank body through a sixth air pipe;

[0032] The second air pipe is connected to the third aeration pipe in the reaction tank body through the seventh air pipe.

[0033] The present invention also provides a sewage treatment method using an electro-flocculation membrane bioreactor, which specifically comprises the following steps:

[0034] S1. The sewage in the first artificial wetland is introduced into the pre-filter box through the first pipe assembly, the pre-filter box filters the sewage, and then the filtered sewage is introduced into the regulating tank through the second pipe assembly;

[0035] S2, introducing high-pressure air into the regulating tank through the aeration component, and introducing the sewage in the regulating tank into the anaerobic tank through the third pipe component;

[0036] S3, converting the insoluble organic matter in the sewage into soluble organic matter through the biological filler inside the anaerobic tank, and then introducing the sewage in the anaerobic tank into the aerobic tank through the fourth pipeline assembly, and the aerobic tank is used to remove the organic matter in the sewage;

[0037] S4, introducing high-pressure air into the aerobic tank through the aeration component, and introducing the sewage in the aerobic tank into the second sedimentation tank through the eighth pipeline component;

[0038] S5. The sewage in the aerobic tank is introduced into the reactor through the fifth pipeline assembly. The positive and negative flocculation electrodes built into the reactor perform electric flocculation treatment on the sewage. At the same time, high-pressure air is introduced into the reactor through the aeration assembly. The reactor introduces the sewage into the first sedimentation tank through the sixth pipeline assembly.

[0039] S6, introducing the clarified liquid in the first sedimentation tank and the second sedimentation tank into the anaerobic tank through the ninth pipeline assembly, and then repeating the above steps S3-S5;

[0040] S7, the biogas generated in the anaerobic tank is introduced into the biogas furnace for combustion, the clarified liquid in the first sedimentation tank is introduced into the jacket of the biogas furnace, the clarified liquid in the jacket is heated, and then introduced into the drying room through the eleventh pipeline, and the sludge collected in the first sedimentation tank and the second sedimentation tank is dried;

[0041] S8. The sewage in the reactor is sprayed into the spray box through the sixth pipe assembly. The clarified liquid heated in the jacket is introduced into the spray box through the twelfth pipe, and mixed and heated with the sewage introduced into the spray box from the reactor to remove odor in the sewage. Then, the sewage is introduced into the second artificial wetland through the thirteenth pipe assembly at the bottom of the spray box.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows: the reactor of the present invention is equipped with positive and negative flocculation electrodes for electric flocculation treatment of sewage, the positive and negative flocculation electrodes generate a large amount of cations and flocculate and precipitate suspended matter in the sewage water body, adsorb and aggregate pollutants, compress and flocculate, and separate and precipitate pollutants from water, thereby achieving the effect of purifying and removing pollutants in the water body;

[0043] The clarified liquid in the first sedimentation tank and the second sedimentation tank is introduced into the anaerobic tank in a cycle to realize the re-circulation treatment of the clarified liquid, thereby further improving the treatment effect of the sewage;

[0044] The clarified liquid of the first sedimentation tank is introduced into the reaction tank body through the second flushing pipe to flush the surface of the positive and negative flocculation electrodes, so as to avoid the accumulation of impurities on the surface of the positive and negative flocculation electrodes, and avoid the positive and negative flocculation electrodes from being unable to perform electric flocculation treatment. At the same time, the clarified liquid of the first sedimentation tank is also introduced into the front box body through the first flushing pipe to flush the surface of the filter grid, so as to avoid the filter grid from being blocked;

[0045] The biogas generated in the anaerobic tank is introduced into the biogas furnace for combustion, the clarified liquid in the first sedimentation tank is introduced into the jacket of the biogas furnace, the clarified liquid in the jacket is heated, and then introduced into the drying room through the eleventh pipeline, so as to dry the sludge collected in the first sedimentation tank and the second sedimentation tank, so as to realize the utilization of biogas and dry the sludge;

[0046] The heated clarified liquid is also introduced into the spray box through the twelfth pipeline, and is used to be mixed and heated with the sewage introduced into the spray box by the reactor to remove the odor in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0048] Figure 2 It is a structural schematic diagram of the connection between the first artificial wetland, the pre-filter box and the regulating tank of the present invention;

[0049] Figure 3 It is a structural schematic diagram of the connection of the anaerobic tank, the aerobic tank, the biogas stove, the first sedimentation tank, the second sedimentation tank and the spray box of the present invention;

[0050] Figure 4 It is a structural schematic diagram of the connection of the aerobic tank, the second sedimentation tank, the fourth pipeline assembly, the eighth pipeline assembly and the fifth pipeline assembly of the present invention;

[0051] Figure 5 It is a schematic structural diagram of the connection of the reactor, the first sedimentation tank, the spray box and the second artificial wetland of the present invention.

[0052] In the figure: 1, first artificial wetland; 2, first pipeline assembly; 201, first water pump; 202, first pipeline; 3, pre-filter box; 301, pre-box; 302, sewage pipe; 303, filter grille; 4, aeration assembly; 401, second air pipe; 402, third air pipe; 403, fourth air pipe; 404, fifth air pipe; 405, first aeration pipe; 406, first air pipe; 407, sixth air pipe; 408, seventh air pipe; 409, third aeration pipe; 410, high-pressure gas tank; 5 , regulating tank; 6, biogas stove; 7, tenth pipeline; 8, third pipeline assembly; 801, third water pump; 802, third pipeline; 9, second pipeline assembly; 901, second water pump; 902, second pipeline; 10, second sedimentation tank; 11, fourth pipeline assembly; 111, fourth pipeline; 112, fourth water pump; 113, water distribution pipe; 12, aerobic tank; 121, second tank body; 122, tilting plate; 123, servo motor; 124, stirring rod; 125, mounting plate; 13, fifth pipeline assembly 131, the fifth water pump; 132, the fifth pipeline; 14, the eighth pipeline assembly; 141, the eighth water pump; 142, the eighth pipeline; 15, the anaerobic tank; 151, the first tank body; 152, the biological filler; 16, the ninth pipeline assembly; 161, the ninth water pump; 162, the ninth pipeline; 163, the first branch pipe; 164, the second branch pipe; 17, the eleventh pipeline; 18, the drying room; 19, the thirteenth pipeline assembly; 191, the thirteenth water pump; 192, the thirteenth pipeline; 20, the tenth The second pipeline; 21. Electric control box; 22. Reactor; 221. Reaction tank; 222. Positive and negative flocculation electrodes; 23. The first sedimentation tank; 24. The sixth pipeline assembly; 241. The sixth water pump; 242. The sixth pipeline; 243. Spray pipeline; 244. Spray water pump; 245. Solenoid valve; 25. The seventh pipeline assembly; 251. The seventh pipeline; 252. The first flushing pipe; 253. The second flushing pipe; 254. The water diversion pipe; 255. The seventh water pump; 26. Spray box; 27. The second artificial wetland. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figure 1 -5. The present invention provides a technical solution:

[0055] Embodiment 1:

[0056] An electro-flocculation membrane bioreactor comprises a first artificial wetland 1, a second artificial wetland 27 and an aeration assembly 4, wherein the first artificial wetland 1 introduces sewage in the first artificial wetland 1 into a pre-filter box 3 through a first pipeline assembly 2, the sewage is filtered through the pre-filter box 3, and the pre-filter box 3 introduces the filtered sewage into a regulating tank 5 through a second pipeline assembly 9;

[0057] The pre-filter box 3 includes a pre-box body 301 and a plurality of filter grids 303 installed inside the pre-box body 301. A sewage pipe 302 is also provided at the bottom of the pre-box body 301.

[0058] The first pipeline assembly 2 includes a first pipeline 202 connected between the first artificial wetland 1 and the front box 301 and a first water pump 201 installed on the first pipeline 202;

[0059] The second pipeline assembly 9 includes a second pipeline 902 connected between the front tank 301 and the regulating tank 5 and a second water pump 901 installed on the second pipeline 902 .

[0060] A layer of fine sand is laid inside the first artificial wetland 1, and aquatic plants are planted therein to purify the water quality therein. A PLC controller is provided inside the electric control box 21. The PLC controller controls the operation of the first water pump 201 to introduce the water in the first artificial wetland 1 into the front box 301. The filter grid 303 filters and removes impurities from the water in the front box 301. The PLC controller controls the operation of the second water pump 901 to introduce the sewage after impurities removal into the regulating tank 5.

[0061] The regulating tank 5 is used to adjust the water volume and uniform water quality so that the sewage can enter the anaerobic tank 15 more evenly.

[0062] The regulating tank 5 is connected to the anaerobic tank 15 through the third pipe assembly 8. The anaerobic tank 15 converts the insoluble organic matter in the sewage into soluble organic matter through the biological filler 152 inside the anaerobic tank 15. The anaerobic tank 15 is connected to the aerobic tank 12 through the fourth pipe assembly 11. The aerobic tank 12 is used to remove organic matter in the sewage.

[0063] The anaerobic tank 15 includes a first tank body 151, and the biological filler 152 is disposed in the first tank body 151;

[0064] The third pipeline assembly 8 includes a third pipeline 802 connected between the regulating tank 5 and the first tank body 151 and a third water pump 801 installed on the third pipeline 802;

[0065] The aerobic pool 12 comprises a second pool body 121, an inclined plate 122 is installed at the front end of the second pool body 121, and a plurality of water guide grooves are arranged on the upper surface of the inclined plate 122. A servo motor 123 is fixed on the mounting plate 125 at the top of the second pool body 121, and a stirring rod 124 is fixed to the output end of the servo motor 123 after passing through the mounting plate 125.

[0066] The fourth pipeline assembly 11 includes a fourth pipeline 111 connected between the first tank body 151 and the aerobic tank 12, a fourth water pump 112 installed on the fourth pipeline 111, and a water distribution pipe 113 connected to the rear end of the fourth pipeline 111. The water distribution pipe 113 is arranged above the inclined plate 122, and a plurality of water outlet holes are evenly spaced at the lower end of the water distribution pipe 113.

[0067] The PLC controller controls the operation of the third water pump 801, which is used to introduce the sewage in the regulating tank 5 into the first tank body 151. The biological filler 152 serves as a carrier of bacteria, helping to convert insoluble organic matter into soluble organic matter and hydrolyze large molecular organic matter into small molecular organic matter, which helps the subsequent aerobic tank 12 to further oxidize and decompose the organic matter.

[0068] The PLC controller controls the fourth water pump 112 to work, and introduces the sewage in the first tank body 151 into the water distribution pipe 113 through the fourth pipe 111, and finally discharges the sewage through the water outlet at the lower end of the water distribution pipe 113 and falls to the inclined plate 122, and then falls into the second tank body 121 along the water guide groove on the inclined plate 122;

[0069] The sewage is discharged through the outlet hole at the lower end of the water distribution pipe 113 and evenly distributed to the inclined plate 122, and flows in the water guide groove, so that the sewage is fully combined with oxygen in the air. Then the PLC controller controls the servo motor 123 to work, so that the stirring rod 124 stirs the sewage in the second tank body 121;

[0070] The aerobic tank 12 is connected to the reactor 22 through the fifth pipeline assembly 13. The reactor 22 is equipped with positive and negative flocculation electrodes 222 for electroflocculation treatment of sewage. The fifth pipeline assembly 13 includes a fifth pipeline 132 connected between the second tank body 121 and the reaction tank body 221 and a fifth water pump 131 installed on the fifth pipeline 132.

[0071] The PLC controller controls the operation of the fifth water pump 131, which is used to introduce the sewage in the second tank body 121 into the reaction tank body 221. The PLC controller controls the positive and negative flocculation electrodes 222 to be energized. The positive and negative flocculation electrodes 222 are aluminum plates, which produce a large amount of cations and suspended matter flocculation precipitation in the sewage water body, and achieve the adsorption and aggregation of pollutants, compression flocculation, and separation and precipitation of pollutants and water, thereby achieving the effect of purifying and removing pollutants in the water body.

[0072] The reactor 22 is connected to the first sedimentation tank 23 and the spray box 26 respectively through the sixth pipeline assembly 24, and the sixth pipeline assembly 24 includes a sixth pipeline 242 connected between the rear end of the reaction tank body 221 and the top of the first sedimentation tank 23, a sixth water pump 241 installed on the sixth pipeline 242, a spray pipeline 243 connected between the sixth pipeline 242 and the top of the spray box 26, and a solenoid valve 245 and a spray water pump 244 installed on the spray pipeline 243;

[0073] The PLC controller controls the solenoid valve 245 and the spray water pump 244 to stop working, and the PLC controller controls the sixth water pump 241 to start, so as to introduce the sewage in the reaction tank 221 into the first sedimentation tank 23;

[0074] The PLC controller controls the electromagnetic valve 245 and the spray water pump 244 to open, spraying the sewage in the reaction tank 221 into the spray box 26;

[0075] The first sedimentation tank 23 is connected to the reactor 22 and the pre-filter box 3 through the seventh pipeline assembly 25, and is used to backwash the reactor 22 and the pre-filter box 3 with the clarified liquid of the first sedimentation tank 23;

[0076] The aerobic tank 12 is connected to the second sedimentation tank 10 through the eighth pipeline assembly 14, and the first sedimentation tank 23 and the second sedimentation tank 10 are connected to the anaerobic tank 15 through the ninth pipeline assembly 16, which is used to circulate the clarified liquid in the first sedimentation tank 23 and the second sedimentation tank 10 into the anaerobic tank 15;

[0077] The eighth pipeline assembly 14 includes an eighth pipeline 142 connected between the second tank body 121 and the top of the second sedimentation tank 10 and an eighth water pump 141 installed on the eighth pipeline 142;

[0078] The PLC controller controls the eighth water pump 141 to work, so as to introduce the sewage in the second tank body 121 into the second sedimentation tank 10 for sedimentation;

[0079] The ninth pipeline assembly 16 includes a ninth pipeline 162 connected to the top of the first tank body 151 and a ninth water pump 161 installed on the ninth pipeline 162. The end of the ninth pipeline 162 is connected to the second sedimentation tank 10 through a first branch pipe 163, and the end of the ninth pipeline 162 is also connected to the first sedimentation tank 23 through a second branch pipe 164.

[0080] The PLC controller controls the ninth water pump 161 to work, so as to introduce the clarified liquid in the second sedimentation tank 10 and the first sedimentation tank 23 into the first tank body 151;

[0081] The seventh pipeline assembly 25 includes a water diversion pipe 254 extending into the upper part of the first sedimentation tank 23, a seventh pipeline 251 connected to the end of the water diversion pipe 254, a seventh water pump 255 installed at the connection between the water diversion pipe 254 and the seventh pipeline 251, and a plurality of groups of first flushing pipes 252 and a plurality of groups of second flushing pipes 253 installed on the seventh pipeline 251;

[0082] A plurality of groups of first flushing pipes 252 are connected to the bottom of the side of the front box 301 , and a plurality of groups of second flushing pipes 253 are connected to the side of the reaction tank 221 .

[0083] The PLC controller controls the seventh water pump 255 to operate, which is used to introduce the clarified liquid from the first sedimentation tank 23 into the reaction tank body 221 via the second flushing pipe 253, so as to flush the surfaces of the positive and negative flocculation electrodes 222. At the same time, the clarified liquid from the first sedimentation tank 23 is also introduced into the front box body 301 via the first flushing pipe 252, so as to flush the surface of the filter grid 303.

[0084] The anaerobic tank 15 introduces the biogas generated in the anaerobic tank 15 into the biogas furnace 6 for combustion through the tenth pipeline 7, introduces the clarified liquid in the first sedimentation tank 23 into the jacket of the biogas furnace 6, heats the clarified liquid in the jacket, and then introduces it into the drying room 18 through the eleventh pipeline 17, so as to dry the sludge collected in the first sedimentation tank 23 and the second sedimentation tank 10;

[0085] The heated clarified liquid is also introduced into the spray box 26 through the twelfth pipeline 20, and is mixed and heated with the sewage introduced into the spray box 26 by the reactor 22 to remove the odor in the sewage. Then, the bottom of the spray box 26 introduces the sewage into the second artificial wetland 27 through the thirteenth pipeline assembly 19;

[0086] The aeration assembly 4 is used to introduce high-pressure air into the pre-filter box 3 , the regulating tank 5 , the aerobic tank 12 and the reactor 22 .

[0087] The reactor 22 includes a reaction tank body 221 and a plurality of groups of positive and negative flocculation electrodes 222 disposed inside the reaction tank body 221;

[0088] The thirteenth pipeline assembly 19 includes a thirteenth pipeline 192 connected between the second artificial wetland 27 and the bottom of the spray box 26 and a thirteenth water pump 191 installed on the thirteenth pipeline 192 .

[0089] The aeration assembly 4 includes a high-pressure gas tank 410, a first gas pipe 406 connected to the side of the high-pressure gas tank 410, and a second gas pipe 401 connected to the first gas pipe 406;

[0090] The second air pipe 401 is connected to a fourth air pipe 403 via the third air pipe 402, and the fourth air pipe 403 is connected to the top of the filter grid 303;

[0091] The second air pipe 401 is connected to the first aeration pipe 405 in the regulating tank 5 through the fifth air pipe 404;

[0092] The second air pipe 401 is connected to the second aeration pipe in the second tank body 121 through the sixth air pipe 407;

[0093] The second air pipe 401 is connected to the third aeration pipe 409 in the reaction tank body 221 through the seventh air pipe 408 .

[0094] The present invention also provides a sewage treatment method using an electro-flocculation membrane bioreactor, which specifically comprises the following steps:

[0095] S1, introducing the sewage in the first artificial wetland 1 into the pre-filter box 3 through the first pipe assembly 2, the pre-filter box 3 filters the sewage, and then introducing the filtered sewage into the regulating tank 5 through the second pipe assembly 9;

[0096] S2, introducing high-pressure air into the regulating tank 5 through the aeration component 4, and introducing the sewage in the regulating tank 5 into the anaerobic tank 15 through the third pipe component 8;

[0097] S3, converting the insoluble organic matter in the sewage into soluble organic matter through the biological filler 152 inside the anaerobic tank 15, and then introducing the sewage in the anaerobic tank 15 into the aerobic tank 12 through the fourth pipe assembly 11, and the aerobic tank 12 is used to remove the organic matter in the sewage;

[0098] S4, introducing high-pressure air into the aerobic tank 12 through the aeration assembly 4, and introducing sewage in the aerobic tank 12 into the second sedimentation tank 10 through the eighth pipeline assembly 14;

[0099] S5, the sewage in the aerobic tank 12 is introduced into the reactor 22 through the fifth pipe assembly 13, and the positive and negative flocculation electrodes 222 built in the reactor 22 perform electric flocculation treatment on the sewage. At the same time, high-pressure air is introduced into the reactor 22 through the aeration assembly 4, and the reactor 22 introduces the sewage into the first sedimentation tank 23 through the sixth pipe assembly 24;

[0100] S6, introducing the clarified liquid in the first sedimentation tank 23 and the second sedimentation tank 10 into the anaerobic tank 15 through the ninth pipeline assembly 16, and then repeating the above steps S3-S5;

[0101] S7, the biogas generated in the anaerobic tank 15 is introduced into the biogas furnace 6 for combustion, the clarified liquid in the first sedimentation tank 23 is introduced into the jacket of the biogas furnace 6, the clarified liquid in the jacket is heated, and then introduced into the drying room 18 through the eleventh pipeline 17, and the sludge collected in the first sedimentation tank 23 and the second sedimentation tank 10 is dried;

[0102] S8. The sewage in the reactor 22 is sprayed into the spray box 26 via the sixth pipe assembly 24. The clarified liquid heated in the jacket is introduced into the spray box 26 via the twelfth pipe 20, and mixed and heated with the sewage introduced into the spray box 26 from the reactor 22 to remove odor from the sewage. Subsequently, the sewage is introduced into the second artificial wetland 27 at the bottom of the spray box 26 via the thirteenth pipe assembly 19.

[0103] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment method using an electro-flocculation membrane bioreactor, characterized in that: The electro-flocculation membrane bioreactor comprises a first artificial wetland, a second artificial wetland and an aeration assembly, wherein the first artificial wetland introduces sewage in the first artificial wetland into a pre-filter box through a first pipeline assembly, the sewage is filtered through the pre-filter box, and the pre-filter box introduces the filtered sewage into a regulating tank through a second pipeline assembly; The regulating tank is connected to the anaerobic tank through the third pipeline assembly. The anaerobic tank converts the insoluble organic matter in the sewage into soluble organic matter through the biological filler inside the anaerobic tank. The anaerobic tank is connected to the aerobic tank through the fourth pipeline assembly. The aerobic tank is used to remove organic matter in the sewage. The aerobic tank is connected to the reactor via a fifth pipeline assembly, and the reactor is equipped with positive and negative flocculation electrodes for performing electric flocculation treatment on the sewage; The reactor is respectively connected to the first sedimentation tank and the spray box through the sixth pipeline assembly, and the first sedimentation tank is connected to the reactor and the pre-filter box through the seventh pipeline assembly, so as to backwash the reactor and the pre-filter box with the clarified liquid of the first sedimentation tank; The aerobic tank is connected to the second sedimentation tank through an eighth pipeline assembly, and the first sedimentation tank and the second sedimentation tank are connected to the anaerobic tank through a ninth pipeline assembly, for circulating the clarified liquid in the first sedimentation tank and the second sedimentation tank into the anaerobic tank; The anaerobic tank introduces the biogas generated in the anaerobic tank into the biogas furnace through the tenth pipeline for combustion, introduces the clarified liquid in the first sedimentation tank into the jacket of the biogas furnace, heats the clarified liquid in the jacket, and then introduces it into the drying room through the eleventh pipeline for drying the sludge collected in the first sedimentation tank and the second sedimentation tank; The heated clarified liquid is also introduced into the spray box through the twelfth pipeline to be mixed and heated with the sewage introduced into the spray box by the reactor to remove the odor in the sewage, and then the sewage is introduced into the second artificial wetland through the thirteenth pipeline assembly at the bottom of the spray box; The aeration assembly is used to introduce high-pressure air into the pre-filter box, the regulating tank, the aerobic tank and the reactor; the pre-filter box includes a pre-box body and a plurality of groups of filter grilles installed inside the pre-box body, and a sewage pipe is also provided at the bottom of the pre-box body; The first pipeline assembly includes a first pipeline connected between the first artificial wetland and the front box and a first water pump installed on the first pipeline; The second pipeline assembly includes a second pipeline connected between the front tank and the regulating tank and a second water pump installed on the second pipeline; the anaerobic tank includes a first tank body, and the biological filler is arranged in the first tank body; The third pipeline assembly includes a third pipeline connected between the regulating tank and the first tank body and a third water pump installed on the third pipeline; The aerobic pool comprises a second pool body, an inclined plate installed at the front end of the second pool body, a plurality of water guide grooves are arranged on the upper surface of the inclined plate, a servo motor is fixed on the mounting plate at the top of the second pool body, and a stirring rod is fixed on the output end of the servo motor after passing through the mounting plate; The fourth pipeline assembly includes a fourth pipeline connected between the first tank body and the aerobic tank, a fourth water pump installed on the fourth pipeline, and a water distribution pipe connected to the rear end of the fourth pipeline, the water distribution pipe is arranged above the inclined plate, and a plurality of groups of water outlet holes are evenly spaced at the lower end of the water distribution pipe; the reactor includes a reaction tank body and a plurality of groups of positive and negative flocculation electrodes arranged inside the reaction tank body; The fifth pipeline assembly includes a fifth pipeline connected between the second tank body and the reaction tank body and a fifth water pump installed on the fifth pipeline; The eighth pipeline assembly includes an eighth pipeline connected between the second tank body and the top of the second sedimentation tank and an eighth water pump installed on the eighth pipeline; The ninth pipeline assembly includes a ninth pipeline connected to the top of the first tank body and a ninth water pump installed on the ninth pipeline, the end of the ninth pipeline is connected to the second sedimentation tank through a first branch pipe, and the end of the ninth pipeline is also connected to the first sedimentation tank through a second branch pipe; the sixth pipeline assembly includes a sixth pipeline connected between the rear end of the reaction tank body and the top of the first sedimentation tank, a sixth water pump installed on the sixth pipeline, a spray pipeline connected between the sixth pipeline and the top of the spray box, and a solenoid valve and a spray water pump installed on the spray pipeline; The thirteenth pipeline assembly includes a thirteenth pipeline connected between the second artificial wetland and the bottom of the spray box and a thirteenth water pump installed on the thirteenth pipeline; the seventh pipeline assembly includes a water diversion pipe extending into the upper part of the first sedimentation tank, a seventh pipeline connected to the end of the water diversion pipe, a seventh water pump installed at the connection between the water diversion pipe and the seventh pipeline, and a plurality of groups of first flushing pipes and a plurality of groups of second flushing pipes installed on the seventh pipeline; A plurality of groups of first flushing pipes are connected to the bottom of the side of the front box, and a plurality of groups of second flushing pipes are connected to the side of the reaction tank; the aeration assembly includes a high-pressure gas tank, a first air pipe connected to the side of the high-pressure gas tank, and a second air pipe connected to the first air pipe; The second air pipe is connected to a fourth air pipe through the third air pipe, and the fourth air pipe is connected to the top of the filter grid; The second air pipe is connected to the first aeration pipe in the regulating tank through the fifth air pipe; The second air pipe is connected to the second aeration pipe in the second tank body through a sixth air pipe; The second air pipe is connected to the third aeration pipe in the reaction tank body through the seventh air pipe; The sewage treatment method specifically comprises the following steps: S1. The sewage in the first artificial wetland is introduced into the pre-filter box through the first pipe assembly, the pre-filter box filters the sewage, and then the filtered sewage is introduced into the regulating tank through the second pipe assembly; S2, introducing high-pressure air into the regulating tank through the aeration component, and introducing the sewage in the regulating tank into the anaerobic tank through the third pipe component; S3, converting the insoluble organic matter in the sewage into soluble organic matter through the biological filler inside the anaerobic tank, and then introducing the sewage in the anaerobic tank into the aerobic tank through the fourth pipeline assembly, and the aerobic tank is used to remove the organic matter in the sewage; S4, introducing high-pressure air into the aerobic tank through the aeration component, and introducing the sewage in the aerobic tank into the second sedimentation tank through the eighth pipeline component; S5. The sewage in the aerobic tank is introduced into the reactor through the fifth pipeline assembly. The positive and negative flocculation electrodes built into the reactor perform electric flocculation treatment on the sewage. At the same time, high-pressure air is introduced into the reactor through the aeration assembly. The reactor introduces the sewage into the first sedimentation tank through the sixth pipeline assembly. S6, introducing the clarified liquid in the first sedimentation tank and the second sedimentation tank into the anaerobic tank through the ninth pipeline assembly, and then repeating the above steps S3-S5; S7, the biogas generated in the anaerobic tank is introduced into the biogas furnace for combustion, the clarified liquid in the first sedimentation tank is introduced into the jacket of the biogas furnace, the clarified liquid in the jacket is heated, and then introduced into the drying room through the eleventh pipeline, and the sludge collected in the first sedimentation tank and the second sedimentation tank is dried; S8. The sewage in the reactor is sprayed into the spray box through the sixth pipe assembly. The clarified liquid heated in the jacket is introduced into the spray box through the twelfth pipe, and mixed and heated with the sewage introduced into the spray box from the reactor to remove odor in the sewage. Then, the sewage is introduced into the second artificial wetland through the thirteenth pipe assembly at the bottom of the spray box.

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