CN107352649B - Integrated bio-membrane reactor and sewage treatment method thereof - Google Patents

Abstract

The invention discloses an integrated bio-membrane reactor and a sewage treatment method thereof, wherein the reactor mainly comprises a reactor body, an anaerobic reaction zone, an aerobic reaction zone, an aeration rod I/II, a cathode plate I/II and an anode rod I/II, wherein the anaerobic reaction zone is positioned at the lower part of the reactor body, the aerobic reaction zone is positioned at the upper part of the reactor body, the aeration rod I/II is respectively fixed at the centers of transverse shafts of the anaerobic reaction zone and the aerobic reaction zone, the cathode plate I/II is respectively fixed at the side surface of the aeration rod I/II, the anode rod I/II is respectively positioned between two adjacent cathode plates I/II, three-dimensional electrode particles and biological filler balls A are filled in the anaerobic reaction zone, and three-dimensional electrode particles and biological filler balls B are filled in the aerobic reaction zone. The invention has the advantages of good treatment effect, convenient operation and management, low cost and the like, and is suitable for the intensive treatment of sewage and the biogas utilization of organic energy.

Description

Integrated bio-membrane reactor and sewage treatment method thereof

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to an integrated bio-membrane reactor and a method for treating sewage by using the same.

Background

The increasingly prominent water environment pollution and water resource shortage provide new challenges for sewage treatment worldwide. The biomembrane method technology has the characteristics of high organic load, high organic matter removal rate, low excess sludge yield, convenient operation and management and the like, and plays an important supporting role in the sewage treatment practice for over a hundred years. The integrated bio-membrane reactor and the sewage treatment method thereof are developed based on the biological synergistic principle and application practice, and have important significance and wide application prospect.

The electrode biofilm process treatment process based on coupling of electrochemistry and a biofilm process integrates electrochemical actions such as flocculation, air flotation, oxidation, micro-electrolysis and the like and strong electron transfer action between an electrode and a biofilm microorganism, can effectively enhance the treatment capacity of the process on sewage, particularly refractory wastewater, and realizes deep purification of target pollutants such as organic matters, nitrogen, phosphorus and the like, and gradually becomes a focus of attention of researchers in recent years. The Chinese invention patent 'biomembrane electrode and UASB coupling reactor' (application number: 201410208078.2) discloses a biomembrane electrode-UASB coupling reactor, which comprises a reactor cylinder, a biomembrane electrode system, an electrochemical test system and a cathode potential test device, and promotes the oxidative metabolism of microorganisms to organic pollutants and improves the pollutant degradation rate through the coupling action of a micro electric field and the microorganisms. The Chinese invention patent 'a combined electrode biofilm denitrification reactor' (application number: 201610837288.7) discloses a combined electrode biofilm denitrification reactor, which achieves the purpose of deep denitrification by using hydrogen as an electron donor to carry out denitrification on nitrate nitrogen in wastewater through the electrolysis hydrogen production and the metabolism of a denitrification biofilm. In order to realize the synergistic and efficient removal of multi-target pollutants (organic matters, nitrogen, phosphorus and the like) in sewage, the integrated bio-membrane reactor and the sewage treatment method thereof are invented by absorbing the beneficial experiences in the aspects of reactor configuration design and biomass increase and performing system integration in the aspects of reactor function partition optimization, mass transfer enhancement, functional microorganism enhancement, integrated design, operation optimization and the like.

Disclosure of Invention

Aiming at the technical problems, the invention provides an integrated bio-membrane reactor and a method for treating sewage by using the same.

The technical scheme of the invention is as follows: an integrated bio-membrane reactor and a method for treating sewage thereof, the integrated bio-membrane reactor mainly comprises a reactor body, the reactor body is of a semi-buried structure, the interior of the reactor body is divided into an anaerobic reaction zone and an aerobic reaction zone, the anaerobic reaction zone is buried underground, the aerobic reaction zone is positioned on the ground, the center of a transverse shaft of the anaerobic reaction zone is provided with an aeration rod I, the side surface of the aeration rod I is provided with a cathode plate I, an anode rod I parallel to the aeration rod I is arranged between the adjacent cathode plates I, the left end and the right end of the anode rod I are fixedly connected on the aeration rod I through support rods, the left end of the aeration rod I penetrates through the outer wall of the anaerobic reaction zone and is connected with a motor I, the right end of the aeration rod I penetrates through the outer wall of the anaerobic reaction zone and is connected with a gas storage tank through a gas input pipe, a sewage water distribution pipe is arranged above the anaerobic reaction zone, a plurality of water spray, the biological filler ball A contains high-attached-film carrier filler and a composite microbial agent A, a gas collecting area is arranged above a sewage water distribution pipe, the right end of the gas collecting area is connected with a gas collecting center through a gas output pipe, the middle of the gas output pipe is communicated with a gas input pipe through a branch pipe, an aeration rod II is arranged at the center of a cross shaft in an aerobic reaction area, a cathode plate II is arranged on the side surface of the aeration rod II, an anode rod II parallel to the aeration rod II is arranged between every two adjacent cathode plates II, the left end and the right end of the anode rod II are fixedly connected to the aeration rod II through support rods, the left end of the aeration rod II penetrates through the outer wall of the aerobic reaction area and is connected with a motor II, the right end of the aeration rod II penetrates through the outer wall of the aerobic reaction area and is connected with an air compressor through an air pipe, a power supply is arranged below, the aerobic reaction district is inside evenly to be filled with three-dimensional electrode particle and biological filler ball B, contain height in the biological filler ball B and attach membrane carrier filler and compound microbial inoculant B, the below in aerobic reaction district is equipped with the sludge settling zone, the sludge settling zone is the triangle-shaped that falls, the bottom in sludge settling zone is passed through the mud conveyer pipe and is linked together with the external world, the upper right side in aerobic reaction district is equipped with the water purification delivery outlet, anaerobic reaction district and aerobic reaction district lead to pipe and are linked together, the main part of water pipe is located the outside of reactor body, be equipped with the water pump on the water pipe, place anaerobic reaction district bottom center in the intake end of water pipe in, place aerobic reaction district upper portion.

As an improvement, the integrated bio-membrane reactor and the sewage treatment method thereof mainly comprise a reactor body, wherein the reactor body is of a semi-buried structure, the inside of the reactor body is divided into an anaerobic reaction area and an aerobic reaction area, the anaerobic reaction area is buried underground, the aerobic reaction area is positioned on the ground, an aeration rod I is arranged at the center of a cross shaft of the anaerobic reaction area, a cathode plate I is arranged on the side surface of the aeration rod I, an anode rod I parallel to the aeration rod I is arranged between the adjacent cathode plates I, the left end and the right end of the anode rod I are fixedly connected to the aeration rod I through a support rod, the left end of the aeration rod I penetrates through the outer wall of the anaerobic reaction area and is connected with a motor I, the right end of the aeration rod I penetrates through the outer wall of the anaerobic reaction area and is connected with a gas storage tank through a gas input pipe, a sewage inlet pipe is arranged at the bottom of the anaerobic reaction area, three-dimensional electrode particles and bio-, the biological filler ball A contains high-attached-film carrier filler and A-type microbial bacteria, the A-type microbial bacteria come from a composite microbial bacteria agent A, a gas collecting area is arranged above a sewage distribution pipe, a porous solid-liquid separation partition plate is arranged below the gas collecting area, the right end of the gas collecting area is connected with a gas collecting center through a gas output pipe, the middle of the gas output pipe is communicated with a gas input pipe through a branch pipe, an aeration rod II is arranged at the center of a transverse shaft in an aerobic reaction area, a cathode plate II is arranged on the side surface of the aeration rod II, an anode rod II parallel to the aeration rod II is arranged between the adjacent cathode plates II, the left end and the right end of the anode rod II are fixedly connected to the aeration rod II through support rods, the left end of the aeration rod II penetrates through the outer wall of the aerobic reaction area and is connected with a motor II, and the right end of the aeration rod II penetrates, a power supply is arranged below the motor II, the right ends of the aeration rod I and the aeration rod II are respectively connected with the power supply through a first lead and a second lead, three-dimensional electrode particles and biological filler balls B are uniformly filled in the aerobic reaction zone, the biological filler ball B contains a high-attached-film carrier filler and a B-type microbial bacterium, the B-type microbial bacterium is a composite microbial bacterium agent B, a sludge settling zone is arranged below the aerobic reaction zone, the sludge settling zone is in an inverted triangle shape, the bottom of the sludge settling zone is communicated with the outside through a sludge conveying pipe, a purified water outlet is arranged at the upper right of the aerobic reaction zone, the anaerobic reaction zone is communicated with the aerobic reaction zone through a water pipe, the main body of the water pipe is positioned outside the reactor body, a water pump is arranged on the water pipe, the water inlet end of the water pipe is arranged above the porous solid-liquid separation partition plate, and the outlet end of the water pipe is arranged in the center of the upper part of the aerobic reaction zone.

Furthermore, the reactor body is of a three-layer structure, the inner layer is a heat transfer layer, the outer layer is a heat preservation layer, the middle layer is a baffling water bath layer, the baffling mode of the baffling water bath layer is longitudinal baffling, transverse baffling or spiral baffling, water used by the baffling water bath layer is purified water output by an aerobic reaction area, and the reactor is subjected to heat preservation treatment by utilizing water bath.

Furthermore, a cable cavity and a gas guide cavity are arranged in the aeration rod I, the cable cavity and the gas guide cavity are hermetically separated, the cable cavity is located between the support rod and the motor I, the gas guide cavity is located between the support rod and the gas input pipe, an aeration hole is formed in the gas guide cavity, the cable cavity and the gas guide cavity are hermetically separated to prevent gas from escaping and sewage from flowing reversely, and the sealing performance of an anaerobic reaction zone is improved.

Furthermore, a cable cavity and an air guide cavity are arranged in the aeration rod II, the cable cavity and the air guide cavity are hermetically separated, the cable cavity is located between the support rod and the motor II, the air guide cavity is located between the support rod and the air pipe, and an aeration hole is formed in the air guide cavity.

Further, the cable intracavity includes wire one and wire two, and wire one links to each other with negative plate I and negative plate II respectively, and wire two links to each other with positive pole stick I and positive pole stick II through bracing piece inside respectively.

Furthermore, the cathode plate I and the cathode plate II are in a cross straight plate type or S-shaped curved plate type, and four anode rods can be correspondingly distributed in four subareas of the cross straight plate type, so that the reaction rate is improved; two anode rods can be correspondingly distributed in the two semicircular subareas of the S-shaped curved plate, and the effective area of electrode reaction is enlarged by wrapping the anode rods in the semicircular subareas, so that the reaction rate is improved, and electric energy can be saved.

Further, the high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 3-5:1, and the porous mineral comprises the following components in percentage by weight: 25-28% of nano calcium phosphate, 20-26% of nano silicon dioxide, 4-6% of adhesive and the balance of polypyrrole modified nano carbon, wherein the high-molecular bacteria-carrying particles comprise porous polyurethane particles and solidified fungi, the nano carbon modified by polypyrrole coating can improve the membrane attachment rate of a biological membrane, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the use amount of a mineral carrier can be reduced, and the cost is reduced.

Furthermore, the solidified fungi is any one or combination of rhizopus oryzae, penicillium chrysogenum, mucor, mortierella isabellina, aspergillus marinus, trichoderma reesei and phanerochaetes chrysosporium.

Further, the composite microbial agent A comprises the following components in percentage by weight: 15-18% of denitrifying bacteria, 12-16% of methane-oxidizing bacteria, 10-13% of rhodospirillum, 13-16% of yeast, 5-8% of hydrolase, 6-9% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

Further, the composite microbial agent B comprises the following components in percentage by weight: 13-19% of ceramic bacterium, 14-20% of escherichia coli, 12-18% of frank bacterium, 8-10% of penicillium, 6-12% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The invention also provides a method for treating sewage by using the integrated biofilm reactor, which comprises the following steps:

the first step is as follows: firstly, performing biofilm formation domestication, adding water into a compound microbial inoculum A and a compound microbial inoculum B respectively to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, enabling the bacterial liquid A to flow into an anaerobic reaction zone through a sewage water distribution pipe, reversely feeding the bacterial liquid B into an aerobic reaction zone through a purified water output port, keeping the temperature in the anaerobic reaction zone and the aerobic reaction zone at 15-20 ℃, continuously feeding water into the two reaction zones, enabling the hydraulic retention time to be 12h, switching on a power supply, rotating a motor I and a motor II at the speed of 50-150r/min, simultaneously performing gradient biofilm formation by sequentially using the direct current intensity of 50, 100, 150, 200 and 250mA, operating each current gradient for 3-5 days, and discharging the bacterial liquid after the biofilm formation is completed;

the second step is that: introducing sewage treatment, introducing the sewage into an anaerobic reaction zone through a sewage water distribution pipe or a sewage water inlet pipe, driving an aeration rod I by a motor I to enable a cathode plate I and an anode rod I to rotate intermittently at the speed of 10-30r/min so as to enable the sewage to be primarily purified in the anaerobic reaction zone, then pumping the sewage subjected to the anaerobic reaction treatment into an aerobic reaction zone by a water pipe, driving an aeration rod II by a motor II to enable a cathode plate II and an anode rod II to rotate intermittently at the speed of 30-60r/min, simultaneously aerating by charging air into the aerobic reaction zone by an air compressor so as to enable the sewage to be intensively purified, collecting the generated sludge to a sludge settling zone and discharging the sludge from a sludge conveying pipe, and discharging the treated purified water from a purified water outlet.

Compared with the prior art, the invention has the beneficial effects that: the integrated biofilm reactor of the invention adds a three-dimensional electrode in the traditional biofilm reactor, combines an electrochemical method and a biological method, and is beneficial to enhancing the sewage treatment efficiency; the reactor body is divided into an anaerobic reaction zone and an aerobic reaction zone, the two reaction zones are filled with different biological filler balls, and compared with the biological filler balls suitable for anaerobic and aerobic reaction at the same time, the biological filler balls contain special functional microorganisms set for different anaerobic and aerobic environmental conditions, so that the survival rate of the microorganisms is improved and prolonged; compared with the single or fixed form of the common three-dimensional electrode, the invention fixes the cathode plate and the anode bar on the aeration rod in a crossed manner, increases the contact area of sewage and the biological filler balls by rotating the motor and stirring and aerating, and greatly improves the sewage treatment efficiency. In a word, the integrated biofilm reactor formed by coupling the biofilm method and the electrochemical method is system integration in aspects of reactor function partition optimization, mass transfer enhancement, functional microorganism enhancement, integrated design, operation optimization and the like, can improve the treatment capacity of the process on sewage, particularly refractory wastewater, and can realize deep purification on multi-target pollutants such as organic matters, nitrogen, phosphorus and the like. In addition, the invention has the advantages of good treatment effect, convenient operation and management, low cost and the like, and is suitable for the intensive treatment of sewage and the biogas utilization of organic energy.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a view showing the connection among an aeration rod I, a cathode plate I and an anode rod I according to examples 1 and 3 of the present invention;

FIG. 3 is a view showing the connection among the aeration rod II, the cathode plate II and the anode rod II according to examples 1 and 3 of the present invention;

FIG. 4 is a diagram showing the connection relationship between the cathode plate I, the anode bar I, the cathode plate II and the anode bar II of the cathode plate I, the anode bar II and the anode bar II of the cathode plate II in example 1 and example 3 of the present invention, respectively, and a power;

FIG. 5 is a schematic view of the overall structure of embodiment 2 of the present invention;

FIG. 6 is a schematic view of the overall structure of embodiment 3 of the present invention;

FIG. 7 is a schematic view of the overall structure of embodiment 4 of the present invention;

FIG. 8 is a view showing the connection among the aeration rod I, the cathode plate I and the anode rod I according to examples 2 and 4 of the present invention;

FIG. 9 is a view showing the connection among the aeration rod II, the cathode plate II and the anode rod II according to examples 2 and 4 of the present invention;

FIG. 10 is a diagram showing the connection relationship between a cathode plate I, an anode rod I, a cathode plate II and an anode rod II of example 2 and example 4 of the present invention, respectively, and a power supply;

FIG. 11 is a schematic view of the three-layer structure of the reactor body of examples 1 to 4 of the present invention.

Wherein, 1-a reactor body, 2-an anaerobic reaction zone, 3-an aerobic reaction zone, 4-an aeration rod I, 5-a cathode plate I, 6-an anode rod I, 7-a support rod, 8-a motor I, 9-a gas input pipe, 10-a gas storage tank, 11-a sewage water distribution pipe, 12-a water spray nozzle, 13-three-dimensional electrode particles, 14-a biological filler ball A, 15-a gas collection zone, 16-a gas output pipe, 17-a gas collection center, 18-a branch pipe, 19-an aeration rod II, 20-a cathode plate II, 21-an anode rod II, 22-a motor II, 23-an air pipe, 24-an air compressor, 25-a power supply, 26-a first lead, 27-a second lead, 28-a biological filler ball B, 29-sludge settling zone, 30-sludge conveying pipe, 31-purified water outlet, 32-water pipe, 33-heat transfer layer, 34-outer layer of insulating layer, 35-baffling water bath layer, 36-cable cavity, 37-air guide cavity, 38-aeration hole, 39-water pump, 40-sewage inlet pipe and 41-porous solid-liquid separation baffle.

Detailed Description

The invention is described in more detail below with reference to specific examples 1-4:

example 1

As shown in fig. 1, an integrated biofilm reactor, mainly include reactor body 1, reactor body 1 is half buried formula structure, as shown in fig. 11, reactor body 1 is three layer construction, the inlayer is heat transfer layer 33, the skin is heat preservation 34, the intermediate level is baffling water bath layer 35, baffling water bath layer 35 baffling mode is vertical baffling, horizontal baffling or spiral baffling, the used water of baffling water bath layer is the water purification of aerobic reaction district 3 output, utilize the water bath to carry out heat preservation to the reactor, compare in that electrical heating temperature is more even and the power consumption is little, hydrothermal resource utilization rate is high. The reactor body 1 is internally divided into an anaerobic reaction zone 2 and an aerobic reaction zone 3, the anaerobic reaction zone 2 is buried underground, the aerobic reaction zone 3 is located on the ground, an aeration rod I4 is arranged at the center of a cross shaft of the anaerobic reaction zone 2, as shown in figures 2 and 4, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod I4, the cable cavity 36 and the air guide cavity 37 are sealed and separated, the cable cavity 36 is located between a support rod 7 and a motor I8, the air guide cavity 37 is located between the support rod 7 and an air input pipe 9, an aeration hole 38 is formed in the air guide cavity 37, the cable cavity and the air guide cavity are sealed and separated to prevent air channeling and sewage backflow, and the sealing performance of the anaerobic reaction zone is improved. The side of an aeration rod I4 is provided with a cathode plate I5, an anode rod I6 parallel to the aeration rod I4 is arranged between the adjacent cathode plates I5, the left end and the right end of the anode rod I6 are fixedly connected to the aeration rod I4 through a support rod 7, the left end of the aeration rod I4 penetrates through the outer wall of an anaerobic reaction zone 2 and is connected with a motor I8, the right end of the aeration rod I4 penetrates through the outer wall of the anaerobic reaction zone 2 and is connected with a gas storage tank 10 through a gas input pipe 9, a sewage water distribution pipe 11 is arranged above the anaerobic reaction zone 2, a plurality of water spray nozzles 12 are arranged below the sewage water distribution pipe 11, three-dimensional electrode particles 13 and biological filler balls A14 are uniformly filled in the anaerobic reaction zone 2, a high-attached membrane carrier filler and a composite microbial agent A are contained in the biological filler balls A14, a gas collecting area 15 is arranged above the sewage water distribution pipe 11, and the right end of the gas collecting area, the middle of the gas output pipe 16 is communicated with the gas input pipe 9 through a branch pipe 18, an aeration rod II 19 is arranged at the center of a cross shaft in the aerobic reaction zone 3, as shown in FIGS. 3 and 4, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod II 19, the cable cavity 36 and the air guide cavity 37 are hermetically separated, the cable cavity 36 is positioned between the support rod 7 and the motor II 22, the air guide cavity 37 is positioned between the support rod 7 and the air pipe 23, and an aeration hole 38 is arranged on the air guide cavity 37. As shown in fig. 4, the cable cavity 36 contains a first lead 26 and a second lead 27, the first lead 26 is connected with a cathode plate i 5 and a cathode plate ii 20 respectively, wherein the cathode plate i 5 and the cathode plate ii 20 are cross-shaped straight plates, and four anode rods can be distributed in four partitions of the cross-shaped straight plates correspondingly, so that the reaction rate is increased; and the second lead 27 is respectively connected with the anode rod I6 and the anode rod II 21 through the inner part of the support rod 7. A cathode plate II 20 is arranged on the side surface of the aeration rod II 19, an anode rod II 21 parallel to the aeration rod II 19 is arranged between the adjacent cathode plates II 20, the left end and the right end of the anode rod II 21 are fixedly connected to the aeration rod II 19 through a support rod 7, the left end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with a motor II 22, the right end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with an air compressor 24 through an air pipe 23, a power supply 25 is arranged below the motor II 22, the right ends of the aeration rod I4 and the aeration rod II 19 are respectively connected with the power supply 25 through a first lead 26 and a second lead 27, three-dimensional electrode particles 13 and biological filler balls B28 are uniformly filled in the aerobic reaction zone 3, high-coated carrier fillers and composite microbial agents B are contained in the biological filler balls B28, a sludge settling zone 29 is arranged below the, the bottom of the sludge settling zone 29 is communicated with the outside through a sludge conveying pipe 30, a purified water outlet 31 is arranged at the upper right side of the aerobic reaction zone 3, the anaerobic reaction zone 2 is communicated with the aerobic reaction zone 3 through a water pipe 32, the main body of the water pipe 32 is positioned outside the reactor body 1, a water pump 39 is arranged on the water pipe 32, the water inlet end of the water pipe 32 is arranged in the center of the bottom of the anaerobic reaction zone 2, and the outlet end of the water pipe 32 is arranged in the center of the upper part of the aerobic reaction zone 3.

The high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 3:1, and the porous mineral comprises the following components in percentage by weight: 25% of nano calcium phosphate, 20% of nano silicon dioxide, 4% of adhesive and the balance of polypyrrole modified nano carbon, wherein the macromolecular bacterium-carrying particle comprises porous polyurethane particles and solidified fungi. The solidified fungi is rhizopus oryzae, the nano carbon modified by the polypyrrole coating can improve the film attaching rate of a biological film, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the using amount of a mineral carrier can be reduced, and the cost is reduced.

The composite microbial agent A comprises the following components in percentage by weight: 15% of denitrifying bacteria, 12% of methane-oxidizing bacteria, 10% of rhodospirillum, 13% of yeast, 5% of hydrolase, 6% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

Wherein, the composite microbial agent B comprises the following components in percentage by weight: 13% of pottery bacteria, 14% of escherichia coli, 12% of frank bacteria, 8% of penicillium, 6% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The working method of the embodiment comprises the following steps:

firstly, performing biofilm domestication, respectively adding water into a compound microbial agent A and a compound microbial agent B to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, wherein the bacterial liquid A flows into an anaerobic reaction zone 2 through a sewage water distribution pipe 11, the bacterial liquid B is reversely fed into an aerobic reaction zone 3 through a purified water outlet 31, the temperature in the anaerobic reaction zone 2 and the aerobic reaction zone 3 is maintained at 15 ℃, water continuously flows into the two reaction zones, the hydraulic retention time is 12 hours, a power supply is connected, a motor I8 and a motor II 22 rotate at the speed of 50r/min, gradient biofilm culturing is sequentially performed at the direct current intensities of 50, 100, 150, 200 and 250mA, each current gradient runs for 3 days, and the bacterial liquid is discharged after biofilm culturing is completed;

and secondly, introducing sewage into the anaerobic reaction zone 2 through a sewage water distribution pipe 11, driving an aeration rod I4 by a motor I8 to enable a cathode plate I5 and an anode rod I6 to rotate intermittently at the speed of 10r/min so as to enable the sewage to be primarily purified in an electrode biomembrane, then pumping the sewage subjected to the anaerobic reaction into the aerobic reaction zone 3 by using a water pipe 32, driving an aeration rod II 19 by a motor II 22 to enable a cathode plate II 20 and an anode rod II 21 to rotate intermittently at the speed of 30r/min, simultaneously charging air into an air compressor 24 for aeration so as to enable the sewage to be intensively purified in the electrode biomembrane, collecting the generated sludge to a sludge settling zone 29 and discharging the sludge from a sludge conveying pipe 30, and discharging the treated purified water from a purified water outlet 31.

Example 2

As shown in fig. 5, an integrated biofilm reactor, mainly include reactor body 1, reactor body 1 is half buried formula structure, as shown in fig. 11, reactor body 1 is three layer construction, the inlayer is heat transfer layer 33, the skin is heat preservation 34, the intermediate level is baffling water bath layer 35, baffling water bath layer 35 baffling mode is vertical baffling, horizontal baffling or spiral baffling, the used water of baffling water bath layer is the water purification of aerobic reaction district 3 output, utilize the water bath to carry out heat preservation to the reactor, compare in that electrical heating temperature is more even and the power consumption is little, hydrothermal resource utilization rate is high. The reactor body 1 is internally divided into an anaerobic reaction zone 2 and an aerobic reaction zone 3, the anaerobic reaction zone 2 is buried underground, the aerobic reaction zone 3 is located on the ground, an aeration rod I4 is arranged at the center of a cross shaft of the anaerobic reaction zone 2, as shown in figures 8 and 11, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod I4, the cable cavity 36 and the air guide cavity 37 are sealed and separated, the cable cavity 36 is located between a support rod 7 and a motor I8, the air guide cavity 37 is located between the support rod 7 and a gas input pipe 9, an aeration hole 38 is formed in the air guide cavity 37, the cable cavity and the air guide cavity are sealed and separated to prevent gas from escaping and sewage from flowing reversely, and the sealing performance of the anaerobic reaction zone is improved. The side of an aeration rod I4 is provided with a cathode plate I5, an anode rod I6 parallel to the aeration rod I4 is arranged between the adjacent cathode plates I5, the left end and the right end of the anode rod I6 are fixedly connected to the aeration rod I4 through a support rod 7, the left end of the aeration rod I4 penetrates through the outer wall of an anaerobic reaction zone 2 and is connected with a motor I8, the right end of the aeration rod I4 penetrates through the outer wall of the anaerobic reaction zone 2 and is connected with a gas storage tank 10 through a gas input pipe 9, a sewage water distribution pipe 11 is arranged above the anaerobic reaction zone 2, a plurality of water spray nozzles 12 are arranged below the sewage water distribution pipe 11, three-dimensional electrode particles 13 and biological filler balls A14 are uniformly filled in the anaerobic reaction zone 2, a high-attached membrane carrier filler and a composite microbial agent A are contained in the biological filler balls A14, a gas collecting area 15 is arranged above the sewage water distribution pipe 11, and the right end of the gas collecting area, the middle of the gas output pipe 16 is communicated with the gas input pipe 9 through a branch pipe 18, an aeration rod II 19 is arranged at the center of a cross shaft in the aerobic reaction zone 3, as shown in FIGS. 9 and 11, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod II 19, the cable cavity 36 and the air guide cavity 37 are hermetically separated, the cable cavity 36 is positioned between the support rod 7 and the motor II 22, the air guide cavity 37 is positioned between the support rod 7 and the air pipe 23, and an aeration hole 38 is arranged on the air guide cavity 37. As shown in fig. 11, the cable cavity 36 contains a first lead 26 and a second lead 27, the first lead 26 is connected with the cathode plate i 5 and the cathode plate ii 20 respectively, wherein the cathode plate i 5 and the cathode plate ii 20 are S-shaped curved plates, two anode rods can be distributed in two semicircular partitions of the S-shaped curved plates correspondingly, and the semicircular partitions wrap the anode rods to enlarge the effective area of electrode reaction, thereby improving the reaction rate and saving electric energy; and the second lead 27 is respectively connected with the anode rod I6 and the anode rod II 21 through the inner part of the support rod 7. A cathode plate II 20 is arranged on the side surface of the aeration rod II 19, an anode rod II 21 parallel to the aeration rod II 19 is arranged between the adjacent cathode plates II 20, the left end and the right end of the anode rod II 21 are fixedly connected to the aeration rod II 19 through a support rod 7, the left end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with a motor II 22, the right end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with an air compressor 24 through an air pipe 23, a power supply 25 is arranged below the motor II 22, the right ends of the aeration rod I4 and the aeration rod II 19 are respectively connected with the power supply 25 through a first lead 26 and a second lead 27, three-dimensional electrode particles 13 and biological filler balls B28 are uniformly filled in the aerobic reaction zone 3, high-coated carrier fillers and composite microbial agents B are contained in the biological filler balls B28, a sludge settling zone 29 is arranged below the, the bottom of the sludge settling zone 29 is communicated with the outside through a sludge conveying pipe 30, a purified water outlet 31 is arranged at the upper right side of the aerobic reaction zone 3, the anaerobic reaction zone 2 is communicated with the aerobic reaction zone 3 through a water pipe 32, the main body of the water pipe 32 is positioned outside the reactor body 1, a water pump 39 is arranged on the water pipe 32, the water inlet end of the water pipe 32 is arranged in the center of the bottom of the anaerobic reaction zone 2, and the outlet end of the water pipe 32 is arranged in the center of the upper part of the aerobic reaction zone 3.

The high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 4:1, and the porous mineral comprises the following components in percentage by weight: 26% of nano calcium phosphate, 23% of nano silicon dioxide, 5% of adhesive and the balance of polypyrrole modified nano carbon, wherein the macromolecular bacterium-carrying particle comprises porous polyurethane particles and solidified fungi. The solidified fungi is aspergillus phoenicis, the membrane attaching rate of the biological membrane can be improved by the nano carbon modified by the polypyrrole coating, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the using amount of a mineral carrier can be reduced, and the cost is reduced.

The composite microbial agent A comprises the following components in percentage by weight: 17% of denitrifying bacteria, 12-16% of methane-oxidizing bacteria, 12% of rhodospirillum, 15% of yeast, 7% of hydrolase, 8% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

The composite microbial agent B comprises the following components in percentage by weight: 16% of pottery bacteria, 17% of escherichia coli, 15% of frank bacteria, 9% of penicillium, 9% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The working method of the embodiment comprises the following steps:

firstly, performing biofilm domestication, respectively adding water into a compound microbial agent A and a compound microbial agent B to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, wherein the bacterial liquid A flows into an anaerobic reaction zone 2 through a sewage water distribution pipe 11, the bacterial liquid B is reversely fed into an aerobic reaction zone 3 through a purified water outlet 31, the temperature in the anaerobic reaction zone 2 and the aerobic reaction zone 3 is maintained at 15-20 ℃, water continuously flows into the two reaction zones, the hydraulic retention time is 12h, a power supply is switched on, a motor I8 and a motor II 22 rotate at the speed of 100r/min, gradient biofilm formation is sequentially performed at the direct current intensities of 50, 100, 150, 200 and 250mA, each current gradient runs for 4 days, and the bacterial liquid is discharged after the biofilm formation is completed;

and secondly, introducing sewage into the anaerobic reaction zone 2 through a sewage water distribution pipe 11, driving an aeration rod I4 by a motor I8 to enable a cathode plate I5 and an anode rod I6 to rotate intermittently at the speed of 20r/min so as to enable the sewage to be primarily purified in an electrode biomembrane, then pumping the sewage subjected to the anaerobic reaction into the aerobic reaction zone 3 by using a water pipe 32, driving an aeration rod II 19 by a motor II 22 to enable a cathode plate II 20 and an anode rod II 21 to rotate intermittently at the speed of 45r/min, simultaneously charging air into an air compressor 24 for aeration so as to enable the sewage to be intensively purified in the electrode biomembrane, collecting the generated sludge to a sludge settling zone 29 and discharging the sludge from a sludge conveying pipe 30, and discharging the treated purified water from a purified water outlet 31.

Example 3

As shown in fig. 6, an integrated biofilm reactor, mainly include reactor body 1, reactor body 1 is half buried formula structure, as shown in fig. 11, reactor body 1 is three layer construction, the inlayer is heat transfer layer 33, the skin is heat preservation 34, the intermediate level is baffling water bath layer 35, baffling water bath layer 35 baffling mode is vertical baffling, horizontal baffling or spiral baffling, the used water of baffling water bath layer is the water purification of aerobic reaction district 3 output, utilize the water bath to carry out heat preservation to the reactor, compare in that electrical heating temperature is more even and the power consumption is little, hydrothermal resource utilization rate is high. The reactor body 1 is internally divided into an anaerobic reaction zone 2 and an aerobic reaction zone 3, the anaerobic reaction zone 2 is buried underground, the aerobic reaction zone 3 is located on the ground, an aeration rod I4 is arranged at the center of a cross shaft of the anaerobic reaction zone 2, as shown in figures 2 and 4, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod I4, the cable cavity 36 and the air guide cavity 37 are sealed and separated, the cable cavity 36 is located between a support rod 7 and a motor I8, the air guide cavity 37 is located between the support rod 7 and an air input pipe 9, an aeration hole 38 is formed in the air guide cavity 37, the cable cavity and the air guide cavity are sealed and separated to prevent air channeling and sewage backflow, and the sealing performance of the anaerobic reaction zone is improved. The side of an aeration rod I4 is provided with a cathode plate I5, an anode rod I6 parallel to the aeration rod I4 is arranged between the adjacent cathode plates I5, the left end and the right end of the anode rod I6 are fixedly connected to the aeration rod I4 through a support rod 7, the left end of the aeration rod I4 penetrates through the outer wall of an anaerobic reaction zone 2 and is connected with a motor I8, the right end of the aeration rod I4 penetrates through the outer wall of the anaerobic reaction zone 2 and is connected with a gas storage tank 10 through a gas input pipe 9, the bottom of the anaerobic reaction zone 2 is provided with a sewage inlet pipe 40, a sewage water distribution pipe 11 is arranged above the anaerobic reaction zone 2, a plurality of water spray nozzles 12 are arranged below the sewage water distribution pipe 11, three-dimensional electrode particles 13 and biological filler balls A14 are uniformly filled in the anaerobic reaction zone 2, high-attached membrane carrier fillers and composite microbial agents A are contained in the biological filler balls A14, a gas collection zone, a porous solid-liquid separation baffle plate 41 is arranged below the gas collecting area 15, the right end of the gas collecting area 15 is connected with a gas collecting center 17 through a gas output pipe 16, the middle of the gas output pipe 16 is communicated with a gas input pipe 9 through a branch pipe 18, an aeration rod II 19 is arranged at the center of a transverse shaft in the aerobic reaction area 3, as shown in figures 3 and 4, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod II 19, the cable cavity 36 is hermetically separated from the air guide cavity 37, the cable cavity 36 is positioned between the support rod 7 and the motor II 22, the air guide cavity 37 is positioned between the support rod 7 and the air pipe 23, and an aeration hole 38 is arranged on the air guide cavity. As shown in fig. 4, the cable cavity 36 contains a first lead 26 and a second lead 27, the first lead 26 is connected with the cathode plate i 5 and the cathode plate ii 20 respectively, wherein the cathode plate i 5 and the cathode plate ii 20 are cross-shaped straight plates, and four anode rods can be distributed in four partitions of the cross-shaped straight plates correspondingly, so that the reaction rate is improved; and the second lead 27 is respectively connected with the anode rod I6 and the anode rod II 21 through the inner part of the support rod 7. A cathode plate II 20 is arranged on the side surface of the aeration rod II 19, an anode rod II 21 parallel to the aeration rod II 19 is arranged between the adjacent cathode plates II 20, the left end and the right end of the anode rod II 21 are fixedly connected to the aeration rod II 19 through a support rod 7, the left end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with a motor II 22, the right end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with an air compressor 24 through an air pipe 23, a power supply 25 is arranged below the motor II 22, the right ends of the aeration rod I4 and the aeration rod II 19 are respectively connected with the power supply 25 through a first lead 26 and a second lead 27, three-dimensional electrode particles 13 and biological filler balls B28 are uniformly filled in the aerobic reaction zone 3, high-coated carrier fillers and composite microbial agents B are contained in the biological filler balls B28, a sludge settling zone 29 is arranged below the, the bottom of the sludge settling zone 29 is communicated with the outside through a sludge conveying pipe 30, a purified water outlet 31 is arranged at the upper right part of the aerobic reaction zone 3, the anaerobic reaction zone 2 is communicated with the aerobic reaction zone 3 through a water pipe 32, the main body of the water pipe 32 is positioned outside the reactor body 1, a water pump 39 is arranged on the water pipe 32, the water inlet end of the water pipe 32 is arranged above the porous solid-liquid separation partition plate 41, the water pipe can be prevented from being blocked by three-dimensional electrode particles or biological filler balls, and the outlet end of the water pipe 32 is arranged in the center of the upper part of the aerobic reaction zone 3.

The high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 3:1, and the porous mineral comprises the following components in percentage by weight: 25% of nano calcium phosphate, 20% of nano silicon dioxide, 4% of adhesive and the balance of polypyrrole modified nano carbon, wherein the macromolecular bacterium-carrying particle comprises porous polyurethane particles and solidified fungi. The solidified fungi is rhizopus oryzae, the nano carbon modified by the polypyrrole coating can improve the film attaching rate of a biological film, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the using amount of a mineral carrier can be reduced, and the cost is reduced.

The composite microbial agent A comprises the following components in percentage by weight: 15% of denitrifying bacteria, 12% of methane-oxidizing bacteria, 10% of rhodospirillum, 13% of yeast, 5% of hydrolase, 6% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

Wherein, the composite microbial agent B comprises the following components in percentage by weight: 13% of pottery bacteria, 14% of escherichia coli, 12% of frank bacteria, 8% of penicillium, 6% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The working method of the embodiment comprises the following steps:

firstly, performing biofilm domestication, namely adding water into a compound microbial agent A and a compound microbial agent B respectively to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, enabling the bacterial liquid A to flow into an anaerobic reaction zone 2 through a sewage water distribution pipe 11, reversely feeding the bacterial liquid B into an aerobic reaction zone 3 through a purified water output port 31, keeping the temperature in the anaerobic reaction zone 2 and the aerobic reaction zone 3 at 15 ℃, continuously feeding water into the two reaction zones, enabling the hydraulic retention time to be 12h, switching on a power supply, enabling a motor I8 and a motor II 22 to rotate at the speed of 50r/min, simultaneously performing gradient biofilm formation at the direct current intensities of 50, 100, 150, 200 and 250mA in sequence, operating each current gradient for 3 days, and discharging the bacterial liquid after the biofilm formation is finished;

and a second step of introducing sewage treatment, wherein sewage is introduced into the anaerobic reaction zone 2 through a sewage inlet pipe 40, a motor I8 drives an aeration rod I4 to enable a cathode plate I5 and an anode rod I6 to rotate intermittently at the speed of 10r/min, so that the sewage is primarily purified in an electrode biomembrane, then a sewage pump after the anaerobic reaction treatment is sent into the aerobic reaction zone 3 by using a water pipe 32, a motor II 22 drives an aeration rod II 19 to enable a cathode plate II 20 and an anode rod II 21 to rotate intermittently at the speed of 30r/min, air aeration is filled by using an air compressor 24 simultaneously to enable the sewage to be intensively purified in the electrode biomembrane, the generated sludge is collected in a sludge settling zone 29 and is discharged from a sludge conveying pipe 30, and the treated purified water is discharged from a purified water outlet 31.

The high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 5:1, and the porous mineral comprises the following components in percentage by weight: 28% of nano calcium phosphate, 26% of nano silicon dioxide, 6% of adhesive and the balance of polypyrrole modified nano carbon, wherein the macromolecular bacterium-carrying particle comprises porous polyurethane particles and solidified fungi. The solidified fungi is trichoderma reesei, the membrane attaching rate of the biological membrane can be improved by the nano carbon modified by the polypyrrole coating, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the using amount of a mineral carrier can be reduced, and the cost is reduced.

The composite microbial agent A comprises the following components in percentage by weight: 18% of denitrifying bacteria, 16% of methane-oxidizing bacteria, 13% of rhodospirillum, 16% of yeast, 8% of hydrolase, 9% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

The composite microbial agent B comprises the following components in percentage by weight: 19% of pottery bacteria, 20% of escherichia coli, 18% of frank bacteria, 10% of penicillium, 12% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The working method of the embodiment comprises the following steps:

firstly, performing biofilm domestication, respectively adding water into a compound microbial agent A and a compound microbial agent B to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, wherein the bacterial liquid A flows into an anaerobic reaction zone 2 through a sewage water distribution pipe 11, the bacterial liquid B is reversely fed into an aerobic reaction zone 3 through a purified water outlet 31, the temperature in the anaerobic reaction zone 2 and the aerobic reaction zone 3 is maintained at 20 ℃, water continuously flows into the two reaction zones, the hydraulic retention time is 12 hours, a power supply is connected, a motor I8 and a motor II 22 rotate at the speed of 150r/min, gradient biofilm culturing is sequentially performed at the direct current intensities of 50, 100, 150, 200 and 250mA, each current gradient runs for 5 days, and the bacterial liquid is discharged after the biofilm culturing is completed;

and secondly, introducing sewage into the anaerobic reaction zone 2 through a sewage inlet pipe 40, driving an aeration rod I4 by a motor I8 to enable a cathode plate I5 and an anode rod I6 to rotate intermittently at the speed of 30r/min so as to enable the sewage to be primarily purified in an electrode biomembrane, then pumping the sewage subjected to the anaerobic reaction into the aerobic reaction zone 3 by using a water pipe 32, driving an aeration rod II 19 by a motor II 22 to enable a cathode plate II 20 and an anode rod II 21 to rotate intermittently at the speed of 60r/min, simultaneously charging air into an air compressor 24 for aeration so as to enable the sewage to be intensively purified in the electrode biomembrane, collecting the generated sludge to a sludge settling zone 29 and discharging the sludge from a sludge conveying pipe 30, and discharging the treated purified water from a purified water outlet 31.

Example 4

As shown in fig. 7, an integrated biofilm reactor, mainly include reactor body 1, reactor body 1 is half buried formula structure, as shown in fig. 11, reactor body 1 is three layer construction, the inlayer is heat transfer layer 33, the skin is heat preservation 34, the intermediate level is baffling water bath layer 35, baffling water bath layer 35 baffling mode is vertical baffling, horizontal baffling or spiral baffling, the used water of baffling water bath layer is the water purification of aerobic reaction district 3 output, utilize the water bath to carry out heat preservation to the reactor, compare in that electrical heating temperature is more even and the power consumption is little, hydrothermal resource utilization rate is high. The reactor body 1 is internally divided into an anaerobic reaction zone 2 and an aerobic reaction zone 3, the anaerobic reaction zone 2 is buried underground, the aerobic reaction zone 3 is located on the ground, an aeration rod I4 is arranged at the center of a cross shaft of the anaerobic reaction zone 2, as shown in figures 8 and 11, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod I4, the cable cavity 36 and the air guide cavity 37 are sealed and separated, the cable cavity 36 is located between a support rod 7 and a motor I8, the air guide cavity 37 is located between the support rod 7 and a gas input pipe 9, an aeration hole 38 is formed in the air guide cavity 37, the cable cavity and the air guide cavity are sealed and separated to prevent gas from escaping and sewage from flowing reversely, and the sealing performance of the anaerobic reaction zone is improved. The side of an aeration rod I4 is provided with a cathode plate I5, an anode rod I6 parallel to the aeration rod I4 is arranged between the adjacent cathode plates I5, the left end and the right end of the anode rod I6 are fixedly connected to the aeration rod I4 through a support rod 7, the left end of the aeration rod I4 penetrates through the outer wall of an anaerobic reaction zone 2 and is connected with a motor I8, the right end of the aeration rod I4 penetrates through the outer wall of the anaerobic reaction zone 2 and is connected with a gas storage tank 10 through a gas input pipe 9, the bottom of the anaerobic reaction zone 2 is provided with a sewage inlet pipe 40, a sewage water distribution pipe 11 is arranged above the anaerobic reaction zone 2, a plurality of water spray nozzles 12 are arranged below the sewage water distribution pipe 11, three-dimensional electrode particles 13 and biological filler balls A14 are uniformly filled in the anaerobic reaction zone 2, high-attached membrane carrier fillers and composite microbial agents A are contained in the biological filler balls A14, a gas collection zone, a porous solid-liquid separation baffle plate 41 is arranged below the gas collecting area 15, the right end of the gas collecting area 15 is connected with a gas collecting center 17 through a gas output pipe 16, the middle of the gas output pipe 16 is communicated with a gas input pipe 9 through a branch pipe 18, an aeration rod II 19 is arranged at the center of a transverse shaft in the aerobic reaction area 3, as shown in figures 9 and 11, a cable cavity 36 and an air guide cavity 37 are arranged in the aeration rod II 19, the cable cavity 36 is hermetically separated from the air guide cavity 37, the cable cavity 36 is positioned between the support rod 7 and the motor II 22, the air guide cavity 37 is positioned between the support rod 7 and the air pipe 23, and an aeration hole 38 is arranged on the air guide cavity. As shown in fig. 11, the cable cavity 36 contains a first lead 26 and a second lead 27, the first lead 26 is connected with the cathode plate i 5 and the cathode plate ii 20 respectively, wherein the cathode plate i 5 and the cathode plate ii 20 are S-shaped curved plates, two anode rods can be distributed in two semicircular partitions of the S-shaped curved plates correspondingly, and the semicircular partitions wrap the anode rods to enlarge the effective area of electrode reaction, thereby improving the reaction rate and saving electric energy; and the second lead 27 is respectively connected with the anode rod I6 and the anode rod II 21 through the inner part of the support rod 7. A cathode plate II 20 is arranged on the side surface of the aeration rod II 19, an anode rod II 21 parallel to the aeration rod II 19 is arranged between the adjacent cathode plates II 20, the left end and the right end of the anode rod II 21 are fixedly connected to the aeration rod II 19 through a support rod 7, the left end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with a motor II 22, the right end of the aeration rod II 19 penetrates through the outer wall of the aerobic reaction zone 3 and is connected with an air compressor 24 through an air pipe 23, a power supply 25 is arranged below the motor II 22, the right ends of the aeration rod I4 and the aeration rod II 19 are respectively connected with the power supply 25 through a first lead 26 and a second lead 27, three-dimensional electrode particles 13 and biological filler balls B28 are uniformly filled in the aerobic reaction zone 3, high-coated carrier fillers and composite microbial agents B are contained in the biological filler balls B28, a sludge settling zone 29 is arranged below the, the bottom of the sludge settling zone 29 is communicated with the outside through a sludge conveying pipe 30, a purified water outlet 31 is arranged at the upper right part of the aerobic reaction zone 3, the anaerobic reaction zone 2 is communicated with the aerobic reaction zone 3 through a water pipe 32, the main body of the water pipe 32 is positioned outside the reactor body 1, a water pump 39 is arranged on the water pipe 32, the water inlet end of the water pipe 32 is arranged above the porous solid-liquid separation partition plate 41, the water pipe can be prevented from being blocked by three-dimensional electrode particles or biological filler balls, and the outlet end of the water pipe 32 is arranged in the center of the upper part of the aerobic reaction zone 3.

The high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 4:1, and the porous mineral comprises the following components in percentage by weight: 26% of nano calcium phosphate, 23% of nano silicon dioxide, 5% of adhesive and the balance of polypyrrole modified nano carbon, wherein the macromolecular bacterium-carrying particle comprises porous polyurethane particles and solidified fungi. The solidified fungi is aspergillus phoenicis, the membrane attaching rate of the biological membrane can be improved by the nano carbon modified by the polypyrrole coating, and the solidified fungi is used as another carrier, so that on one hand, sewage can be purified, the using amount of a mineral carrier can be reduced, and the cost is reduced.

The composite microbial agent A comprises the following components in percentage by weight: 17% of denitrifying bacteria, 12-16% of methane-oxidizing bacteria, 12% of rhodospirillum, 15% of yeast, 7% of hydrolase, 8% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria, wherein the superoxide dismutase can eliminate redundant oxygen free radicals, provides a better anaerobic environment for the anaerobic bacteria and improves the efficiency.

The composite microbial agent B comprises the following components in percentage by weight: 16% of pottery bacteria, 17% of escherichia coli, 15% of frank bacteria, 9% of penicillium, 9% of oxidase and the balance of acetobacter pasteurianus, wherein the penicillium can inhibit the propagation of gram-positive bacteria and improve the competitiveness of the added aerobic bacteria to a certain extent.

The working method of the embodiment comprises the following steps:

firstly, performing biofilm domestication, respectively adding water into a compound microbial agent A and a compound microbial agent B to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, wherein the bacterial liquid A flows into an anaerobic reaction zone 2 through a sewage water distribution pipe 11, the bacterial liquid B is reversely fed into an aerobic reaction zone 3 through a purified water outlet 31, the temperature in the anaerobic reaction zone 2 and the aerobic reaction zone 3 is maintained at 15 ℃, water continuously flows into the two reaction zones, the hydraulic retention time is 12 hours, a power supply is connected, a motor I8 and a motor II 22 rotate at the speed of 50r/min, gradient biofilm culturing is sequentially performed at the direct current intensities of 50, 100, 150, 200 and 250mA, each current gradient runs for 3 days, and the bacterial liquid is discharged after biofilm culturing is completed;

and secondly, introducing sewage into the anaerobic reaction zone 2 through a sewage inlet pipe 40, driving an aeration rod I4 by a motor I8 to enable a cathode plate I5 and an anode rod I6 to rotate intermittently at the speed of 10r/min so as to enable the sewage to be primarily purified in an electrode biomembrane, then pumping the sewage subjected to the anaerobic reaction into the aerobic reaction zone 3 by using a water pipe 32, driving an aeration rod II 19 by a motor II 22 to enable a cathode plate II 20 and an anode rod II 21 to rotate intermittently at the speed of 30r/min, simultaneously charging air into an air compressor 24 for aeration so as to enable the sewage to be intensively purified in the electrode biomembrane, collecting the generated sludge to a sludge settling zone 29 and discharging the sludge from a sludge conveying pipe 30, and discharging the treated purified water from a purified water outlet 31.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The integrated biofilm reactor is characterized in that the integrated biofilm reactor mainly comprises a reactor body (1), the reactor body (1) is of a semi-buried structure, the interior of the reactor body is divided into an anaerobic reaction zone (2) and an aerobic reaction zone (3), the anaerobic reaction zone (2) is buried underground, the aerobic reaction zone (3) is located on the ground, an aeration rod I (4) is arranged at the center of a transverse shaft of the anaerobic reaction zone (2), a cathode plate I (5) is arranged on the side surface of the aeration rod I (4), an anode rod I (6) parallel to the aeration rod I (4) is arranged between the adjacent cathode plates I (5), the left end and the right end of the anode rod I (6) are fixedly connected onto the aeration rod I (4) through support rods (7), the left end of the aeration rod I (4) penetrates through the outer wall of the anaerobic reaction zone (2) and is connected with a motor I (8), the right end of an aeration rod I (4) penetrates through the outer wall of an anaerobic reaction zone (2) and is connected with a gas storage tank (10) through a gas input pipe (9), a sewage water distribution pipe (11) is arranged above the anaerobic reaction zone (2), a plurality of water spray nozzles (12) are arranged below the sewage water distribution pipe (11), three-dimensional electrode particles (13) and biological filler balls A (14) are uniformly filled in the anaerobic reaction zone (2), the biological filler balls A (14) contain highly-coated membrane carrier fillers and A-type microbial bacteria, the A-type microbial bacteria come from a composite microbial agent A, a gas collection zone (15) is arranged above the sewage water distribution pipe (11), the right end of the gas collection zone (15) is connected with a gas collection center (17) through a gas output pipe (16), and the middle of the gas output pipe (16) is communicated with the gas input pipe (9) through a branch pipe (18), the aeration device is characterized in that an aeration rod II (19) is arranged at the center of a transverse shaft in the aerobic reaction zone (3), a cathode plate II (20) is arranged on the side face of the aeration rod II (19), an anode rod II (21) parallel to the aeration rod II (19) is arranged between the adjacent cathode plate II (20), the left end and the right end of the anode rod II (21) are fixedly connected to the aeration rod II (19) through a support rod (7), the left end of the aeration rod II (19) penetrates through the outer wall of the aerobic reaction zone (3) to be connected with a motor II (22), the right end of the aeration rod II (19) penetrates through the outer wall of the aerobic reaction zone (3) to be connected with an air compressor (24) through an air pipe (23), a power supply (25) is arranged below the motor II (22), and the right ends of the aeration rod I (4) and the aeration rod II (19) are respectively connected with the power supply (25) through a first lead, three-dimensional electrode particles (13) and biological filler balls B (28) are uniformly filled in the aerobic reaction zone (3), the biological filler balls B (28) contain highly-coated membrane carrier fillers and B-type microbial bacteria, the B-type microbial bacteria come from a composite microbial agent B, a sludge settling zone (29) is arranged below the aerobic reaction zone (3), the sludge settling zone (29) is in an inverted triangle shape, the bottom of the sludge settling zone (29) is communicated with the outside through a sludge conveying pipe (30), a purified water outlet (31) is arranged at the upper right part of the aerobic reaction zone (3), the anaerobic reaction zone (2) is communicated with the aerobic reaction zone (3) through a water pipe (32), the main body of the water pipe (32) is positioned outside the reactor body (1), a water pump (39) is arranged on the water pipe (32), and the water inlet end of the water pipe (32) is arranged in the center of the bottom of the anaerobic reaction zone (2), the outlet end of the water pipe (32) is arranged in the center of the upper part of the aerobic reaction zone (3);

the high-adhesion membrane carrier filler is composed of porous mineral particles and high-molecular bacteria-carrying particles in a weight ratio of 3-5:1, and the porous mineral comprises the following components in percentage by weight: 25-28% of nano calcium phosphate, 20-26% of nano silicon dioxide, 4-6% of adhesive and the balance of polypyrrole modified nano carbon; the polymer bacterium-carrying particles comprise porous polyurethane particles and solidified fungi, wherein the solidified fungi are any one or a combination of a plurality of rhizopus oryzae, penicillium chrysogenum, mucor, mortierella fulvescens, aspergillus marinus, trichoderma reesei and phanerochaete chrysosporium;

the composite microbial agent A comprises the following components in percentage by weight: 15-18% of denitrifying bacteria, 12-16% of methane-oxidizing bacteria, 10-13% of rhodospirillum, 13-16% of yeast, 5-8% of hydrolase, 6-9% of superoxide dismutase and the balance of anaerobic ammonium oxidation bacteria;

the composite microbial agent B comprises the following components in percentage by weight: 13-19% of ceramic bacterium, 14-20% of escherichia coli, 12-18% of frank bacterium, 8-10% of penicillium, 6-12% of oxidase and the balance of acetobacter pasteurianus.

2. An integrated biofilm reactor according to claim 1, wherein the reactor body (1) is of a three-layer structure, the inner layer is a heat transfer layer (33), the outer layer is a heat insulation layer (34), the intermediate layer is a water-baffling bath layer (35), the water-baffling bath layer (35) is baffled in a longitudinal, transverse or spiral mode, and water used in the water-baffling bath layer is purified water output from the aerobic reaction zone (3).

3. The integrated biofilm reactor of claim 1, wherein a cable cavity (36) and an air guide cavity (37) are arranged in the aeration rod I (4), the cable cavity (36) and the air guide cavity (37) are hermetically isolated, the cable cavity (36) is positioned between the support rod (7) and the motor I (8), the air guide cavity (37) is positioned between the support rod (7) and the air input pipe (9), and aeration holes (38) are arranged on the air guide cavity (37).

4. The integrated biofilm reactor of claim 1, wherein a cable chamber (36) and an air guide chamber (37) are arranged in the aeration rod II (19), the cable chamber (36) and the air guide chamber (37) are hermetically isolated, the cable chamber (36) is positioned between the support rod (7) and the motor II (22), the air guide chamber (37) is positioned between the support rod (7) and the air pipe (23), and aeration holes (38) are arranged on the air guide chamber (37).

5. An integrated bio film reactor according to claim 3 or 4, wherein the cable chamber (36) contains a first lead (26) and a second lead (27), the first lead (26) is connected to the cathode plate I (5) and the cathode plate II (20), respectively, and the second lead (27) is connected to the anode rod I (6) and the anode rod II (21), respectively, through the inside of the support rod (7).

6. An integrated biofilm reactor according to claim 1, 3 or 4, wherein the cathode plates I (5) and II (20) are of the cross-bar type or the sigmoid plate type.

7. A method for wastewater treatment using an integrated biofilm reactor according to any of claims 1 to 6, comprising the steps of:

the first step is as follows: firstly, performing biofilm formation domestication, adding water into a compound microbial inoculum A and a compound microbial inoculum B respectively to prepare a bacterial liquid A and a bacterial liquid B with the concentration of 1000mg/L, enabling the bacterial liquid A to flow into an anaerobic reaction zone through a sewage water distribution pipe, reversely feeding the bacterial liquid B into an aerobic reaction zone through a purified water output port, keeping the temperature in the anaerobic reaction zone and the aerobic reaction zone at 15-20 ℃, continuously feeding water into the two reaction zones, enabling the hydraulic retention time to be 12h, switching on a power supply, rotating a motor I and a motor II at the speed of 50-150r/min, simultaneously performing gradient biofilm formation by sequentially using the direct current intensity of 50, 100, 150, 200 and 250mA, operating each current gradient for 3-5 days, and discharging the bacterial liquid after the biofilm formation is completed;

the second step is that: introducing sewage treatment, introducing the sewage into an anaerobic reaction zone through a sewage water distribution pipe or a sewage water inlet pipe, driving an aeration rod I by a motor I to enable a cathode plate I and an anode rod I to rotate intermittently at the speed of 10-30r/min so as to enable the sewage to be primarily purified in the anaerobic reaction zone, then pumping the sewage subjected to the anaerobic reaction treatment into an aerobic reaction zone by a water pipe, driving an aeration rod II by a motor II to enable a cathode plate II and an anode rod II to rotate intermittently at the speed of 30-60r/min, simultaneously aerating by charging air into the aerobic reaction zone by an air compressor so as to enable the sewage to be intensively purified, collecting the generated sludge to a sludge settling zone and discharging the sludge from a sludge conveying pipe, and discharging the treated purified water from a purified water outlet.

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