CN114573106A - Upflow type electric auxiliary anaerobic-aerobic coupling biomembrane reactor - Google Patents

Abstract

The invention discloses an upflow type electrically-assisted anaerobic-aerobic coupled biofilm reactor, which comprises a reaction pipe, wherein the reaction pipe is sequentially provided with an anaerobic chamber, an aeration chamber and an aerobic chamber from bottom to top, the liquid outlet end of the anaerobic chamber is communicated with the liquid inlet end of the aerobic chamber through the aeration chamber, an air supply part is arranged in the aeration chamber and comprises an air supply piece and an air injection piece, the air supply piece is positioned below the air injection piece and communicated with the air injection piece, the air outlet end of the aeration chamber is communicated with the air inlet end of the aerobic chamber through the air injection piece, and the air supply piece is in transmission connection with the air injection piece through a rotating rod; and the carrier part is arranged in the aerobic chamber and comprises a carrier frame. The invention can realize the problems of membrane pollution and cavity blockage caused by filler stacking in the aerobic chamber, simultaneously improve the biodegradability of the anaerobic chamber and the aerobic chamber, improve the aeration effect of the aerobic chamber, reduce the quantity of oxygen entering the anaerobic chamber and further improve the reaction rate of the reactor.

Description

An Upflow Electric-Assisted Anaerobic-Aerobic Coupled Biofilm Reactor

technical field

The invention relates to the technical field of sewage treatment, in particular to an up-flow electric-assisted anaerobic-aerobic coupled biofilm reactor.

Background technique

In recent years, personal care products have been extensively studied as an emerging pollutant. However, due to high consumption and stable chemical structure, they are often detected in sewage treatment plants, surface water and groundwater, and despite their low concentrations, they can still negatively affect the water environment and ecological balance, and even cause drinking water pollution. Traditional wastewater treatment methods for the removal of organic matter mainly include biological treatment technologies such as activated sludge method and biofilm method. However, residual drugs in pharmaceutical wastewater will inhibit the growth and activity of microorganisms in traditional biological methods, and affect the removal of organic matter in wastewater. On the other hand, pure aerobic or anaerobic systems cannot achieve complete degradation of organic matter, and a combination of aerobic and anaerobic bioreactors is required. However, due to the stable chemical structure of these drugs, their removal efficiency in microbial degradation still seems unsatisfactory, so it is necessary to develop new methods to improve the removal of organics from wastewater.

Bioelectrochemical reactors (BERs) are systems composed of interactions between microorganisms, electrodes and pollutants. Since biocatalysts have higher catalytic efficiency and specificity than existing chemical catalysts, microorganisms attached to electrodes can Accelerates the electron transfer between the electrode and the contaminant, thereby accelerating the degradation of the contaminant. The basic principle is to make the electrode and the microorganism produce a synergistic effect, and to improve the resistance of the microorganism to the external environmental pressure by means of electrical stimulation, so as to improve the metabolic activity of the biotoxic refractory pollutants, and to accelerate the transfer of electrons. Functional microorganisms are enriched to improve the microbial community structure, thereby improving the removal effect of refractory pollutants. Due to these characteristics, bioelectrochemical reactors have received extensive attention from scholars around the world in recent years, and their operating performance has also been improved. Among them, bioelectrochemical anaerobic-aerobic coupled reactors (AO-UBERs) have the most practical potential.

However, the traditional bioelectrochemical anaerobic-aerobic coupling system also has some disadvantages. First, the microorganisms in the aerobic zone grow rapidly, which leads to membrane fouling and clogging of the cavity. Frequent cleaning of the aerobic zone is required to ensure the normal operation of the system. Second, the existing system cannot remove the complex organic matter in the sewage, which affects the effect of sewage treatment. In addition, the aeration effect of the aerobic zone in the prior art is poor. At the same time, due to structural problems and other factors, when the aerobic zone is aerated, oxygen easily enters the anaerobic zone, which in turn leads to anaerobic conditions. Therefore, an up-flow electric-assisted anaerobic-aerobic coupled biofilm reactor is urgently needed to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an up-flow electric-assisted anaerobic-aerobic coupled biofilm reactor to solve the above-mentioned problems in the prior art, and to realize membrane fouling and cavity blockage caused by packing stacking in the aerobic chamber At the same time, the biodegradability of the anaerobic chamber and the aerobic chamber is improved, in addition, the aeration effect of the aerobic chamber is improved, and the amount of oxygen entering the anaerobic chamber is reduced, thereby increasing the reaction rate of the reactor.

In order to achieve the above object, the present invention provides the following solution: the present invention provides an up-flow electric-assisted anaerobic-aerobic coupled biofilm reactor, comprising a reaction tube, and the reaction tube is sequentially provided with an anaerobic reactor from top to bottom chamber, aeration chamber, and aerobic chamber, the liquid outlet end of the anaerobic chamber is communicated with the liquid inlet end of the aerobic chamber through the aeration chamber,

The air supply part is arranged in the aeration chamber, the air supply part includes an air supply part and an air injection part, the air supply part is located under the air injection part, and the air supply part is communicated with the air injection part, and the air supply part is in communication with the air injection part. The air outlet end of the aeration chamber is communicated with the air inlet end of the aerobic chamber through the air blowing part, and the air supply part is drivingly connected with the air blowing part through a rotating rod;

The carrier part is arranged in the aerobic chamber, the carrier part includes a carrier frame, the carrier frame is detachably connected with the reaction tube and the rotating rod, and a plurality of carrier blocks are arranged in the anaerobic chamber;

The power supply part is arranged outside the reaction tube, the anode of the power supply part is electrically connected to the aerobic chamber, and the cathode of the power supply part is electrically connected to the anaerobic chamber.

Preferably, the first support plate and the second support plate are fixedly connected to the inner wall of the reaction tube, the first support plate is located above the second support plate, and the aeration chamber passes through the first support plate and the second support plate. The second support plate is separated from the anaerobic chamber and the aerobic chamber, the air supply member comprises an air supply box fixedly connected with the top of the second support plate, and a rotating blade is arranged in the air supply box , the rotating rod passes through the air supply box and the rotating blade, and the rotating rod is rotatably connected with the air supply box, the rotating rod is fixedly connected with the rotating blade, and the air supply box side An oxygen inlet pipe is communicated with the wall, and the top end of the air supply box is communicated with the air jet.

Preferably, a plurality of pointed protrusions are fixed on the side wall of the rotating blade, and the pointed protrusions are arranged corresponding to the gas outlet end of the oxygen inlet pipe.

Preferably, the air blowing member includes a spray cylinder fixedly connected to the top of the second support plate, the air supply box is located in the spray cylinder, the inner wall of the spray cylinder is fixed with a first air stone, and the air supply box is located in the spray cylinder. The air box is communicated with the first air stone through a communication pipe, the air outlet end of the spray cylinder is provided with a second air stone, the second air stone penetrates through the first support plate, and the second air stone is connected to the second air stone. The rotating rod is fixedly connected, and the second air stone is rotatably connected with the first support plate.

Preferably, the aperture of the second air stone is smaller than the aperture of the first air stone, and the gas outlet of the second air stone is inclined.

Preferably, the spray cylinder is of a circular truncated structure, and the diameter of the end portion of the spray cylinder close to the first support plate is smaller than the diameter of the end portion of the spray cylinder close to the second support plate.

Preferably, an overflow chamber is communicated above the aerobic chamber, an overflow pipe is communicated with the overflow chamber, and the aerobic chamber and the overflow chamber are separated by a third support plate, and the third support plate There is a stepped through groove on the upper part, a matching stepped plate is arranged in the stepped through groove, the carrier frame is sleeved on the rotating rod, and the stepped plate is detachably connected with the top of the rotating rod .

Preferably, the bottom end of the rotating rod penetrates the second support plate and extends into the anaerobic chamber, the rotating rod is rotatably connected with the second support plate, and a plurality of stirring plates are fixed on the rotating rod. The stirring plates are all located in the anaerobic chamber.

Preferably, the power supply unit includes a power source, the aerobic chamber and the anaerobic chamber are respectively electrically connected to the power source through a conductive plate, and the power supply anode is electrically connected to the conductive plate located in the aerobic chamber. , the power supply cathode is electrically connected to the conductive plate located in the anaerobic chamber.

Preferably, the first support plate, the second support plate, and the third support plate are respectively provided with flow ports for the circulation of waste liquid, and the flow ports on the second support plate are fixed with sieves. network.

The present invention discloses the following technical effects:

1. The carrier frame is set in the aerobic chamber. Compared with the existing fillers, the carrier frame will not be stacked with fillers, so as not to cause membrane pollution and cavity blockage problems, and the carrier frame is easy to replace and practical. In addition, due to the existence of the carrier block, the biodegradation capacity of the anaerobic chamber is improved, and the combination of the two finally improves the purification effect of the reactor on the wastewater.

2. The air supply part cuts the oxygen supplied from the outside for the first time, and then cuts it again through the air jet part to make the air bubbles smaller, thereby improving the aeration effect. At the same time, the air supply part can drive the rotating rod to rotate, and the rotating rod can drive The rotation of the carrier frame enables the carrier frame to stir the wastewater in the aerobic chamber to improve the mixing effect of wastewater and microorganisms, thereby improving the purification effect of the aerobic chamber.

3. By setting the air jet, on the one hand, the air bubbles that have been sheared many times can easily enter the aerobic chamber, and at the same time, it is difficult for the air bubbles to enter the anaerobic chamber, thereby improving the living environment of microorganisms in the aerobic chamber and the anaerobic chamber.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

Fig. 1 is the structural representation of reactor;

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

Fig. 3 is a partial enlarged view at B in Fig. 1;

Fig. 4 is a partial enlarged view at C in Fig. 1;

Fig. 5 is the perspective view of the gas supply part;

Among them, 1-reaction tube, 2-anaerobic chamber, 3-aeration chamber, 4-aerobic chamber, 5-rotating rod, 6-carrier rack, 7-first support plate, 8-second support plate, 9 -Air supply box, 10-rotating vane, 11-oxygen inlet pipe, 12-tip protrusion, 13-spray barrel, 14-first airstone, 15-second airstone, 16-overflow chamber, 17-overflow Flow tube, 18-third support plate, 19-step plate, 20-stirring plate, 21-power supply, 22-conductive plate, 23-screen, 24-flow port, 25-liquid outlet pipe, 26-liquid inlet pipe , 27- air supply box, 28- one-way valve, 29- fixing bolt.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The present invention provides an up-flow electric-assisted anaerobic-aerobic coupled biofilm reactor, comprising a reaction tube 1, and the reaction tube 1 is provided with an anaerobic chamber 2, an aeration chamber 3, and an aerobic chamber 4 in sequence from top to bottom , the liquid outlet end of the anaerobic chamber 2 is communicated with the liquid inlet end of the aerobic chamber 4 through the aeration chamber 3, and the air supply part is arranged in the aeration chamber 3. The air supply part includes an air supply part and an air injection part, and the air supply part is located in Below the jet part, and the air supply part is communicated with the air jet part, the air outlet end of the aeration chamber 3 is communicated with the air inlet end of the aerobic chamber 4 through the air jet part, and the air supply part is driven and connected with the air jet part through the rotating rod 5; the carrier part is arranged on the In the aerobic chamber 4, the carrier part includes a carrier frame 6, and the carrier frame 6 is detachably connected with the reaction tube 1 and the rotating rod 5 respectively, and several carrier blocks are arranged in the anaerobic chamber 2; the power supply part is arranged outside the reaction tube 1, The anode of the power supply part is electrically connected to the aerobic chamber 4 , and the cathode of the power supply part is electrically connected to the anaerobic chamber 2 .

The waste liquid passes through the anaerobic chamber 2, the aeration chamber 3, and the aerobic chamber 4 in sequence from bottom to top. When the aerobic chamber 4 is aerated, the gas supply is started to provide oxygen into the aeration chamber 3, and the oxygen passes through the aeration chamber 4. The air supply part enters the air-jet part after the initial shearing, and finally enters the aerobic chamber 4 by the air-injection part. When the air-supply part works, the air-supply part drives the rotating rod 5 to rotate, and the rotating rod 5 drives the carrier frame 6 to rotate. The waste liquid in the oxygen chamber 4 is slowly stirred, and at the same time, due to the rotation of the carrier frame 6, it is not easily contaminated. The power supply unit supplies power to enrich the microorganisms.

In the above operation process, actual pharmaceutical wastewater or urban sewage is used, and the operation mode is upflow. That is, the sewage first enters the anaerobic chamber 2 (the hydraulic retention time is 24h) to realize the preliminary removal of organic matter. After the middle aeration chamber 3 is the aerobic chamber 4 to maintain the aerobic environment, the organic matter enters the water aerobic chamber 4 in the next step to realize the deep removal of organic matter, degradation of refractory organic matter, nitrification and denitrification of nitrogenous substances and phosphorus removal. function to achieve advanced treatment of sewage.

In one embodiment of the present invention, the aerobic chamber 4 is connected with a liquid outlet pipe 25 so as to discharge the waste liquid that meets the discharge requirements, and the anaerobic chamber 2 is connected with a liquid inlet pipe 26 so as to introduce the waste liquid into the anaerobic chamber 2 .

In an embodiment of the present invention, the carrier block is preferably, but not limited to, a small piece of conductive biofilm carrier carbon felt, on which is attached cathodic anaerobic fermentation microorganisms to achieve preliminary degradation of organic matter, and the particle size of the small piece of carbon felt filler is preferably 1cm-2cm.

In an embodiment of the present invention, the carrier frame 6 is preferably, but not limited to, a conductive biofilm carrier carbon brush, on which an aerobic microorganism is attached to achieve oxidative degradation of organic matter.

To further optimize the scheme, the first support plate 7 and the second support plate 8 are fixedly connected to the inner wall of the reaction tube 1, the first support plate 7 is located above the second support plate 8, and the aeration chamber 3 passes through the first support plate 7 and the second support plate 8. The plate 8 is separated from the anaerobic chamber 2 and the aerobic chamber 4. The air supply member includes an air supply box 9 fixedly connected to the top of the second support plate 8. The air supply box 9 is provided with a rotating blade 10, and the rotating rod 5 passes through the air supply box 9. The air box 9 and the rotating blade 10, and the rotating rod 5 is rotatably connected with the air supply box 9, the rotating rod 5 is fixedly connected with the rotating blade 10, the oxygen inlet pipe 11 is communicated with the side wall of the air supply box 9, and the top of the air supply box 9 is connected to the air jet. Pieces are connected. The first support plate 7 and the second support plate 8 play a role of separation. The external oxygen is introduced into the air supply box 9 through the oxygen inlet pipe 11, and hits the rotating blade 10, so that the rotating blade 10 rotates, and then the oxygen passes through the air supply. The top of the box 9 enters the air jet. The rotation of the rotating blade 10 drives the rotating rod 5 to rotate, so that it can drive the carrier frame 6 to rotate.

In an embodiment of the present invention, an air supply box 27 for supplying oxygen is provided outside the reaction tube 1 , and the air supply box 27 communicates with the air supply box 9 through the oxygen inlet pipe 11 .

In another embodiment of the present invention, two oxygen inlet pipes 11 are connected to the gas supply box 9, and the two oxygen inlet pipes 11 respectively pass through the reaction tube 1 and communicate with the gas supply box 27. Clockwise rotation, the other oxygen inlet pipe 11 makes the rotating blade 10 rotate counterclockwise, and a one-way valve 28 is provided on both oxygen inlet pipes 11 . Two oxygen inlet pipes 11 are arranged. According to the different positions of the two oxygen inlet pipes 11, the air can be jetted to different positions of the rotating blade 10, so that the rotating blade 10 can rotate clockwise and counterclockwise. The purpose is to make the carrier frame 6 It can be rotated both clockwise and counterclockwise, thereby improving the mixing effect of wastewater and microorganisms. The existence of the one-way valve 28 ensures that when one oxygen inlet pipe 11 is working, oxygen will not flow back from the other oxygen inlet pipe 11 .

In a further optimized solution, a plurality of tip projections 12 are fixedly connected to the side wall of the rotating blade 10 , and the tip projections 12 are arranged corresponding to the gas outlet end of the oxygen inlet pipe 11 . The tip protrusion 12 is in preliminary contact with the oxygen bubbles, and then the oxygen bubbles are preliminarily sheared, so as to improve the aeration effect of the aerobic chamber 4 .

To further optimize the solution, the air jet includes a spray cylinder 13 fixedly connected to the top of the second support plate 8, the air supply box 9 is located in the spray cylinder 13, the inner wall of the spray cylinder 13 is fixed with a first air stone 14, and the air supply box 9 communicates through The pipe is communicated with the first air stone 14, the air outlet end of the spray cylinder 13 is provided with a second air stone 15, the second air stone 15 penetrates the first support plate 7, and the second air stone 15 is fixedly connected with the rotating rod 5, and the second air stone 15 is connected with the rotating rod 5. The stone 15 is rotatably connected to the first support plate 7 . The oxygen discharged from the air supply box 9 enters the first air stone 14 through the communication pipe, and the first air stone 14 further shears the oxygen bubbles, thereby reducing the diameter of the oxygen bubbles. The further reduced oxygen bubbles are introduced into the aerobic chamber 4 through the second air stone 15 .

In a further optimization scheme, the aperture of the second air stone 15 is smaller than the aperture of the first air stone 14 , and the air outlet of the second air stone 15 is inclined. In order to reduce the diameter of the oxygen bubbles again, the aperture of the second air stone 15 is smaller than that of the first air stone 14. Since the second air stone 15 rotates together with the rotating rod 5 and the air outlet of the second air stone 15 is inclined, so that the The oxygen bubbles discharged from the second air stone 15 can be thrown into the aerobic chamber 4 evenly, thereby improving the aeration effect of the aerobic chamber 4 .

In addition, the inclination angle and inclination direction of the second air stone 15 can be set according to actual use, and the aeration effect can be improved by replacing the second air stone 15 of different models.

In a further optimized solution, the spray barrel 13 has a circular truncated structure, and the diameter of the end of the spray barrel 13 near the first support plate 7 is smaller than the diameter of the end of the spray barrel 13 near the second support plate 8 . The bottom end of the spray cylinder 13 is fixed with the second support plate 8, and its top is communicated with the aerobic chamber 4 through the second air stone 15, so the air bubbles are not easy to leave the spray cylinder 13 and enter the aeration chamber 3, and the spray cylinder 13 is circular truncated. The structural arrangement can further prevent oxygen bubbles from entering the anaerobic chamber 2 , thereby increasing the reaction rate of the anaerobic chamber 2 .

To further optimize the solution, an overflow chamber 16 is connected to the top of the aerobic chamber 4, an overflow pipe 17 is connected to the overflow chamber 16, and the aerobic chamber 4 and the overflow chamber 16 are separated by a third support plate 18, and the third support plate 18 is separated. A stepped through groove is provided, and a matching stepped plate 19 is arranged in the stepped through groove. The existence of the overflow chamber 16 can prevent the aerobic chamber 4 from overflowing, and a stepped plate 19 is provided on the third support plate 18 so that the carrier frame 6 can be fixed. When the carrier frame 6 needs to be installed, install the carrier frame 6 on the bottom end of the stepped plate 19, then put the stepped plate 19 into the stepped through groove, and limit the stepped plate 19 through the stepped through groove. The frame 6 is sleeved on the rotating rod 5. After the positioning of the stepped plate 19 is completed, the stepped plate 19 and the third supporting plate 18, the stepped plate 19 and the rotating rod 5 are respectively fixed by a plurality of fixing bolts 29.

To further optimize the solution, the bottom end of the rotating rod 5 penetrates the second support plate 8 and extends into the anaerobic chamber 2, the rotating rod 5 is rotatably connected with the second support plate 8, and several stirring plates 20 are fixed on the rotating rod 5. 20 are located in the anaerobic chamber 2. The rotating rod 5 drives the stirring plate 20 to rotate in the anaerobic chamber 2, so that the stirring plate 20 stirs the waste liquid in the anaerobic chamber 2, thereby improving the mixing effect of the waste liquid and the microorganisms.

To further optimize the scheme, the power supply part includes a power supply 21, the aerobic chamber 4 and the anaerobic chamber 2 are respectively electrically connected to the power supply 21 through the conductive plate 22, the anode of the power supply 21 is electrically connected to the conductive plate 22 located in the aerobic chamber 4, and the power supply 21 The cathode is electrically connected to the conductive plate 22 located in the anaerobic chamber 2 . A closed loop is formed under the action of the power source 21 , and the influent water is initially degraded from the bottom to the top through the anaerobic chamber 2 , and further mineralized in the aerobic chamber 4 . During operation, organic matter is efficiently removed in the anaerobic chamber 2 and the aerobic chamber 4.

In one embodiment of the present invention, the conductive plate 22 is preferably, but not limited to, a titanium sheet, so as to supply power to the anaerobic chamber 2 and the aerobic chamber 4 respectively.

To further optimize the solution, the first support plate 7, the second support plate 8, and the third support plate 18 are respectively provided with a circulation port 24 for the circulation of the waste liquid, and the circulation port 24 on the second support plate 8 is fixed with a sieve. Net 23. The existence of the flow port 24 is to facilitate the flow of the waste liquid, and the existence of the screen 23 prevents the carrier blocks in the anaerobic chamber 2 from entering the aeration chamber 3 .

work process:

The waste liquid passes through the anaerobic chamber 2, the aeration chamber 3, and the aerobic chamber 4 in sequence from bottom to top. When the aerobic chamber 4 is aerated, the power supply 21 and the air supply box 27 are activated, and the external oxygen is supplied by the oxygen inlet pipe 11. It is introduced into the air supply box 9, and hits the rotating blade 10, so that the rotating blade 10 rotates, and then the oxygen enters the aerobic chamber 4 through the first air stone 14 and the second air stone 15. During this process, the rotating blade 10 drives the rotating rod 5 to rotate, and the rotating rod 5 drives the carrier frame 6 and the stirring plate 20 to rotate, which respectively stirs the waste liquid in the aerobic chamber 4 and the anaerobic chamber 2, thereby improving the mixing effect of the waste liquid and the microorganisms.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred modes of the present invention, but not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (10)

1. An up-flow type electrically-assisted anaerobic-aerobic coupled biofilm reactor, which comprises a reaction tube (1), wherein the reaction tube (1) is sequentially provided with an anaerobic chamber (2), an aeration chamber (3) and an aerobic chamber (4) from bottom to top, the liquid outlet end of the anaerobic chamber (2) is communicated with the liquid inlet end of the aerobic chamber (4) through the aeration chamber (3),

the gas supply part is arranged in the aeration chamber (3) and comprises a gas supply piece and a gas spraying piece, the gas supply piece is positioned below the gas spraying piece and communicated with the gas spraying piece, the gas outlet end of the aeration chamber (3) is communicated with the gas inlet end of the aerobic chamber (4) through the gas spraying piece, and the gas supply piece is in transmission connection with the gas spraying piece through a rotating rod (5);

the carrier part is arranged in the aerobic chamber (4), the carrier part comprises a carrier frame (6), the carrier frame (6) is detachably connected with the reaction tube (1) and the rotating rod (5) respectively, and a plurality of carrier blocks are arranged in the anaerobic chamber (2);

The power supply part is arranged outside the reaction tube (1), the anode of the power supply part is electrically connected with the aerobic chamber (4), and the cathode of the power supply part is electrically connected with the anaerobic chamber (2).

2. The upflow electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 1, wherein: a first support plate (7) and a second support plate (8) which are fixedly connected with the inner wall of the reaction tube (1), the first support plate (7) is positioned above the second support plate (8), the aeration chamber (3) is separated from the anaerobic chamber (2) and the aerobic chamber (4) through the first support plate (7) and the second support plate (8), the gas supply part comprises a gas supply box (9) fixedly connected with the top end of the second support plate (8), a rotating blade (10) is arranged in the air supply box (9), the rotating rod (5) penetrates through the air supply box (9) and the rotating blade (10), the rotating rod (5) is rotationally connected with the air supply box (9), the rotating rod (5) is fixedly connected with the rotating blades (10), the side wall of the air supply box (9) is communicated with an oxygen inlet pipe (11), and the top end of the air supply box (9) is communicated with the air injection piece.

3. The upflow, electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 2, wherein: the side wall of the rotating blade (10) is fixedly connected with a plurality of tip protrusions (12), and the tip protrusions (12) are arranged corresponding to the air outlet end of the oxygen inlet pipe (11).

4. The upflow electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 2, wherein: the air injection part comprises an air injection barrel (13) fixedly connected with the top end of the second support plate (8), the air supply box (9) is located in the air injection barrel (13), a first air stone (14) is fixedly connected with the inner wall of the air injection barrel (13), the air supply box (9) is communicated with the first air stone (14) through a communicating pipe, the air outlet end of the air injection barrel (13) is provided with a second air stone (15), the second air stone (15) penetrates through the first support plate (7), the second air stone (15) is fixedly connected with the rotating rod (5), and the second air stone (15) is rotatably connected with the first support plate (7).

5. The upflow, electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 4, wherein: the aperture of the second air stone (15) is smaller than that of the first air stone (14), and the air outlet of the second air stone (15) is obliquely arranged.

6. The upflow, electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 4, wherein: the spraying cylinder (13) is of a circular truncated cone structure, and the diameter of the end part, close to the first support plate (7), of the spraying cylinder (13) is smaller than that of the end part, close to the second support plate (8), of the spraying cylinder (13).

7. The upflow electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 2, wherein: aerobic chamber (4) top intercommunication has overflow chamber (16), overflow chamber (16) intercommunication has overflow pipe (17), aerobic chamber (4) with overflow chamber (16) are separated through third extension board (18), the notch cuttype leads to the groove has been seted up on third extension board (18), the notch cuttype leads to the inslot and sets up rather than assorted notch cuttype (19), carrier frame (6) cover is established on bull stick (5), just notch cuttype (19) with the connection can be dismantled on bull stick (5) top.

8. The upflow electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 2, wherein: the bottom end of the rotating rod (5) penetrates through the second support plate (8) and extends into the anaerobic chamber (2), the rotating rod (5) is rotatably connected with the second support plate (8), a plurality of stirring plates (20) are fixedly connected to the rotating rod (5), and the plurality of stirring plates (20) are all located in the anaerobic chamber (2).

9. The upflow electrically-assisted anaerobic-aerobic coupled biofilm reactor of claim 1, wherein: the power supply portion comprises a power supply (21), the aerobic chamber (4) and the anaerobic chamber (2) are respectively connected with the power supply (21) through a conductive plate (22), the anode of the power supply (21) is electrically connected with the conductive plate (22) of the aerobic chamber (4), and the cathode of the power supply (21) is electrically connected with the conductive plate (22) of the anaerobic chamber (2).

10. The upflow electrically assisted anaerobic-aerobic coupled biofilm reactor of claim 7, wherein: the first support plate (7), the second support plate (8) and the third support plate (18) are respectively provided with a circulation port (24) for waste liquid circulation, and a screen (23) is fixedly connected in the circulation port (24) on the second support plate (8).

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