Multiphase synergistic catalytic oxidation sewage treatment equipment

Abstract

The invention relates to multi-phase synergistic catalytic oxidation sewage treatment equipment, and belongs to the technical field of sewage treatment, the multi-phase synergistic catalytic oxidation sewage treatment equipment comprises a sewage pool, two electrode plates, an alternating-current variable-frequency power supply and an ultraviolet lamp, the two electrode plates are immersed in the sewage pool, and the positive electrode and the negative electrode of the alternating-current variable-frequency power supply are electrically connected with the two electrode plates respectively; one electrode plate is arc-shaped, the radian of the arc-shaped electrode plate is greater than 270 degrees, the arc-shaped electrode plate is buckled at the bottom of the sewage pool and is separated from the bottom of the sewage pool, and the other electrode plate is plate-shaped and is positioned inside the arc-shaped electrode plate; the device further comprises an air pump and a conveying pipe, the conveying pipe is connected with the air pump, an outlet of the conveying pipe is located at the bottom of the sewage pool and faces the bottom of the arc-shaped electrode plate, and air conveyed by the air pump is blocked by the arc-shaped electrode plate so that the reaction time of the air and the electrode plate can be prolonged. And the ultraviolet lamp is immersed in the sewage pool to carry out photocatalytic reaction on the hydrogen peroxide. The sewage treatment device has the advantage of improving the sewage treatment effect.

Description

Technical Field

[0001] This application relates to the technical field of sewage treatment, and in particular to a multiphase cooperative catalytic oxidation sewage treatment equipment. Background Art

[0002] The multiphase cooperative catalytic oxidation sewage treatment equipment is an electrochemical generating device that uses high-frequency alternating current electrolyzed water to generate hydrogen peroxide and obtains hydroxyl radicals through ultraviolet light catalysis. Its main principle is that during the process of alternating current electrolyzed water, due to the periodic alternation of the electrode potential in water during the energization of alternating current, the electrochemical reactions of the anode and cathode are fully utilized. When the anode rapidly converts to the cathode, the oxygen generated by electrolyzing water is converted into the raw material for the oxygen reduction reaction at the cathode, greatly reducing the dissolution rate of oxygen in water and the diffusion distance to the cathode, and efficiently generating hydrogen peroxide. Under the catalysis of ultraviolet light, hydroxyl radicals - a highly efficient and strong oxidant without toxic residues - are obtained. Hydroxyl radicals can oxidize complex organic substances in sewage and degrade microbial toxic substances.

[0003] When treating sewage, using the sewage as the electrolyte, referring to the attached Figure 1 , an ultraviolet lamp tube is added to the electrolyte, and the current density, power frequency, and waveform are controlled by an alternating current frequency conversion power supply, so that the electrode plate continuously undergoes the conversion between the anode and the cathode; when the electrode plate is used as the anode, oxygen is generated on the surface of the electrode plate; when the electrode plate changes from the anode to the cathode, the oxygen generated in the anode state and the oxygen introduced by the air pump are reduced to generate hydrogen peroxide. Under the catalysis of the ultraviolet light generated by the ultraviolet lamp tube, hydrogen peroxide generates hydroxyl radicals, and the strong oxidizing property of the hydroxyl radicals is used to oxidize and degrade the organic substances in the sewage.

[0004] However, the oxygen introduced into the electrolyte and the oxygen generated on the surface of the anode electrode plate have a short residence time in the electrolytic cell, resulting in a small amount of hydrogen peroxide generated, and thus the effect on sewage is relatively average. Summary of the Invention

[0005] To improve the treatment effect on sewage, this application provides a multiphase cooperative catalytic oxidation sewage treatment equipment.

[0006] The multiphase cooperative catalytic oxidation sewage treatment equipment provided by this application adopts the following technical solutions: A multiphase cooperative catalytic oxidation sewage treatment equipment, including a sewage tank, electrode plates, an AC variable frequency power supply and an ultraviolet lamp. There are two electrode plates which are immersed in the sewage tank. The positive and negative poles of the AC variable frequency power supply are electrically connected to the two electrode plates respectively; one of the electrode plates is arc-shaped and the arc degree is greater than 270 degrees. The arc-shaped electrode plate is buckled on the bottom of the sewage tank and is in a separated state from the bottom of the sewage tank. The other electrode plate is plate-shaped and is located inside the arc-shaped electrode plate; it also includes an air pump and a delivery pipe. The delivery pipe is connected to the air pump. The outlet of the delivery pipe is located at the bottom of the sewage tank and faces the bottom of the arc-shaped electrode plate. The air transported by the air pump is blocked by the arc-shaped electrode plate, thus prolonging the reaction time of the air and the electrode plate; the ultraviolet lamp is immersed in the sewage tank to carry out photocatalytic reaction on hydrogen peroxide.

[0007] Optionally, the plate-shaped electrode plate is rotatably arranged in the sewage tank. The rotation axis of the electrode plate is parallel to the bottom of the sewage tank and parallel to the length direction of the arc-shaped electrode plate. A first motor for driving the plate-shaped electrode plate to rotate is arranged in the sewage tank.

[0008] Optionally, the plate-shaped electrode plate includes a middle plate and edge plates arranged on both sides of the middle plate. The edge plates are fixedly arranged on the side of the middle plate. The two edge plates are inclined on the side wall of the middle plate, and the inclination directions of the two edge plates are opposite. The middle part of the middle plate is arranged on the output shaft of the first motor. The overall width of the edge plates and the middle plate is equal to the width of the arc-shaped electrode plate.

[0009] Optionally, a water return pipe is arranged in the sewage tank. The water inlet of the water return pipe is located above the arc-shaped electrode plate, and the water outlet faces the space buckled by the arc-shaped electrode plate. A vortex fan is rotatably arranged in the water return pipe. The vortex fan is used to push the sewage in the water return pipe to flow below the arc-shaped electrode plate.

[0010] Optionally, a gas distribution plate is arranged at the bottom of the sewage tank. The gas distribution plate is hollow and has air holes on its top surface. The delivery pipe is communicated with the gas distribution plate. The arc-shaped electrode plate is located above the gas distribution plate; on the side wall of the sewage tank facing the side of the arc-shaped electrode plate, a gas distribution part is arranged. The gas distribution part is used to make the oxygen transported into the sewage tank flow towards the upper half of the arc-shaped electrode plate to generate hydrogen peroxide.

[0011] Optionally, the gas distribution part includes a plurality of air pipes arranged on the side wall of the sewage tank. The air pipes are arranged vertically and are spaced along the length direction of the side wall of the sewage tank. One end of the air pipe is inserted into the gas distribution plate, and the other end is closed. The side wall of the air pipe facing the upper half of the arc-shaped electrode plate is provided with air holes. A plurality of air holes are provided and are evenly arranged along the length direction of the air pipe.

[0012] Optionally, a thin film bag is provided on the trachea. Both ends of the thin film bag are open. The thin film bag is fixedly arranged on the trachea and arranged around the air hole. Along the direction from bottom to top of the trachea, the length of the thin film bag gradually increases and approaches the side wall of the arc-shaped electrode plate.

[0013] Optionally, the arc-shaped electrode plate is rotatably arranged in the sewage tank. The arc-shaped electrode plate rotates in the axial direction of the electrode plate. A driving member for driving the arc-shaped electrode plate to rotate is arranged in the sewage tank.

[0014] Optionally, the driving member includes a driving wheel rotatably arranged in the sewage tank. The driving wheel abuts against the arc-shaped electrode plate. The rotation axis of the driving wheel is parallel to the rotation axis of the arc-shaped electrode plate. The diameter of the driving wheel is larger than the notch width of the arc-shaped electrode plate. The driving member further includes a second motor arranged in the sewage tank. The driving wheel is arranged on the output shaft of the second motor; the output shaft of the second motor includes an insulating section and a conductive section. The driving wheel is arranged on the conductive section. One electrode of the AC variable frequency power supply is electrically connected to the conductive section.

[0015] Optionally, two positioning wheels are arranged in the sewage tank. The two positioning wheels and the driving wheel are arranged in a triangular layout. The arc-shaped electrode plate is clamped between the positioning wheels and the driving wheel.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. When treating sewage, the AC variable frequency power supply delivers alternating current to the electrode plate, and oxygen is generated on the surface of the electrode plate; when the electrode plate changes from the anode to the cathode, the oxygen generated in the anode state and the oxygen introduced by the air pump are reduced to generate hydrogen peroxide; under the catalysis of the ultraviolet rays generated by the ultraviolet lamp tube, hydrogen peroxide generates hydroxyl radicals. Using the strong oxidizing property of hydroxyl radicals, the organic matter in the sewage is oxidized and degraded. Since one electrode plate is arc-shaped and buckles the bottom of the sewage tank, the oxygen electrolytically generated and the supplied oxygen are blocked in the sewage tank, thereby increasing the hydrogen peroxide generated by reduction, thus improving the sewage treatment effect; under the action of the air pump and the delivery pipe, the oxygen content in the sewage is increased, further increasing the production of hydrogen peroxide, and improving the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a multi-phase synergistic catalytic oxidation sewage treatment equipment according to an embodiment of the present application; Figure 2 is a cross-sectional view of the sewage tank in a multi-phase synergistic catalytic oxidation sewage treatment equipment according to an embodiment of the present application; Figure 3 is a cross-sectional view of the return water pipe in a multi-phase synergistic catalytic oxidation sewage treatment equipment according to an embodiment of the present application; Figure 4 Yes Figure 3 It is an enlarged schematic view of part A in it; Figure 5 It is a schematic structural view of a driving wheel and a positioning wheel in a multi-phase cooperative catalytic oxidation sewage treatment equipment according to an embodiment of the present application.

[0018] Explanation of reference numerals: 1, sewage tank; 2, electrode plate; 3, ultraviolet lamp; 4, air pump; 5, delivery pipe; 6, ultraviolet lamp; 7, first motor; 8, intermediate plate; 9, edge plate; 10, return water pipe; 11, vortex fan; 12, bevel gear; 13, gas distribution plate; 14, air holes; 15, air pipe; 16, film bag; 17, driving wheel; 18, second motor; 19, positioning wheel. Detailed implementation manners

[0019] The following further elaborates on the present application in conjunction with the attached Figures 1-5 drawings.

[0020] An embodiment of the present application discloses a multi-phase cooperative catalytic oxidation sewage treatment equipment. Referring to Figure 1 and Figure 2 , the multi-phase cooperative catalytic oxidation sewage treatment equipment includes a sewage tank 1, electrode plates 2, an AC variable frequency power supply, and an ultraviolet lamp 3. There are two electrode plates 2 which are immersed in the sewage tank 1. The positive and negative poles of the AC variable frequency power supply are electrically connected to the two electrode plates 2 respectively; one electrode plate 2 is arc-shaped with an arc greater than 270 degrees. The arc-shaped electrode plate 2 is buckled on the bottom of the sewage tank 1 and is in a separated state from the bottom of the sewage tank 1. The other electrode plate 2 is plate-shaped and is located inside the arc-shaped electrode plate 2; Referring to Figure 1 and Figure 2 , it further includes an air pump 4 and a delivery pipe 5. The delivery pipe 5 is connected to the air pump 4. The outlet of the delivery pipe 5 is located at the bottom of the sewage tank 1 and faces the bottom of the arc-shaped electrode plate 2. The air transported by the air pump 4 is blocked by the arc-shaped electrode plate 2, thereby prolonging the reaction time of the air and the electrode plate 2; Referring to Figure 1 and Figure 2 , the ultraviolet lamp 3 is immersed in the sewage tank 1 to carry out a photocatalytic reaction on hydrogen peroxide. Further, there are multiple ultraviolet lamps 3, and the ultraviolet lamps 3 are respectively located inside the arc-shaped electrode plate 2 and on the side wall of the sewage tank 1, so as to facilitate the generation of hydroxyl radicals by the photocatalytic reaction of hydrogen peroxide.

[0021] When treating sewage, an AC variable-frequency power supply delivers alternating current to the electrode plate 2, and oxygen is generated on the surface of the electrode plate 2; when the electrode plate 2 changes from the anode to the cathode, the oxygen generated in the anode state and the oxygen introduced by the air pump 4 are reduced to produce hydrogen peroxide; under the catalysis of the ultraviolet rays generated by the ultraviolet lamp tube, hydrogen peroxide generates hydroxyl radicals, and the strong oxidizing property of the hydroxyl radicals is used to oxidize and degrade the organic matter in the sewage. Since one electrode plate 2 is arc-shaped and buckles the bottom of the sewage tank 1, the electrolytically generated oxygen and the supplied oxygen are blocked in the sewage tank 1, thereby increasing the hydrogen peroxide produced by reduction, and thus improving the sewage treatment effect; under the action of the air pump 4 and the delivery pipe 5, the oxygen content in the sewage is increased, further increasing the production of hydrogen peroxide, and improving the sewage treatment effect.

[0022] Refer to Figure 2 , in the embodiment of the present application, the plate-shaped electrode plate 2 is rotatably arranged in the sewage tank 1, the rotation axis of the electrode plate 2 is parallel to the bottom of the sewage tank 1 and parallel to the length direction of the arc-shaped electrode plate 2, and a first motor 7 for driving the plate-shaped electrode plate 2 to rotate is arranged in the sewage tank 1; during the hydrolysis reaction, the first motor 7 is started, and the first motor 7 drives the plate-shaped electrode plate 2 to rotate. The rotation of the electrode plate 2 stirs the sewage, and the stirring of the sewage increases the probability of oxygen combining with the electrode plate 2, further increasing the production of hydrogen peroxide; further, when the plate-shaped electrode plate 2 rotates and during the electrode conversion process, the generated oxygen is stirred to another electrode plate 2, further increasing the output of hydrogen peroxide; further, when the plate-shaped electrode plate 2 rotates, the impurities carried on the electrode plate 2 and the generated impurities are removed, improving the electrolysis effect of the sewage and increasing the output of hydrogen peroxide.

[0023] Refer to Figure 2 , further, the output shaft of the first motor 7 includes an insulating section and a conductive section, the plate-shaped electrode plate 2 is coaxially arranged on the conductive section, further, the AC variable-frequency power supply is electrically connected to the conductive section, and further, the electrical connection between the AC variable-frequency power supply and the conductive section is achieved by pressing a conductive sheet against the conductive section, facilitating the delivery of current from the AC variable-frequency power supply to the electrode plate when the electrode plate rotates.

[0024] Refer to Figure 2 , in the embodiment of the present application, the plate-shaped electrode plate 2 includes an intermediate plate 8 and edge plates 9 arranged on both sides of the intermediate plate 8. The edge plates 9 are fixedly arranged on the side of the intermediate plate 8, and the two edge plates 9 are inclined on the side wall of the intermediate plate 8, and the inclination directions of the two edge plates 9 are opposite. The middle of the intermediate plate 8 is arranged on the output shaft of the first motor 7, and the overall width of the edge plates 9 and the intermediate plate 8 is equal to the width of the arc-shaped electrode plate 2; under the action of the intermediate plate 8 and the edge plates 9, the area of the plate-shaped electrode plate 2 is increased, and the contact area between the electrode plate 2 and the sewage is increased, thereby increasing the production of hydrogen peroxide.

[0025] Reference Figure 3 and Figure 4 , in the embodiment of the present application, the sewage located below the arc-shaped electrode plate 2 has a good chemical reaction with hydroxyl radicals. However, due to the small amount of hydroxyl radicals, the sewage treatment effect of the sewage located above the arc-shaped electrode plate 2 is relatively average. Therefore, to improve the sewage treatment effect, a return pipe 10 is provided in the sewage tank 1. The water inlet of the return pipe 10 is located above the arc-shaped electrode plate 2, and the water outlet faces the space enclosed by the arc-shaped electrode plate 2. A vortex fan 11 is rotatably arranged in the return pipe 10. The vortex fan 11 is used to push the sewage in the return pipe 10 to flow below the arc-shaped electrode plate 2. Further, the output shaft of the first motor 7 passes through the return pipe 10 and is rotatably arranged on the side wall of the sewage tank 1. Further, the output shaft of the first motor 7 located in the return pipe 10 and the drive shaft of the vortex fan 11 are both provided with meshing bevel gears 12; when the first motor 7 is started, the first motor 7 drives the bevel gear 12 to rotate, the bevel gear 12 rotates to drive the vortex fan 11 to rotate, and the vortex fan 11 rotates to inject the sewage on the upper layer of the sewage tank 1 into the lower layer and send it into the arc-shaped electrode plate 2, thereby improving the sewage treatment effect.

[0026] Reference Figure 3 , to improve the distribution effect of the supplied oxygen and thus improve the reaction effect with the electrode plate 2, a gas distribution plate 13 is provided at the bottom of the sewage tank 1. The gas distribution plate 13 is hollow and has air holes 14 on its top surface. The conveying pipe 5 is communicated with the gas distribution plate 13. The arc-shaped electrode plate 2 is located above the gas distribution plate 13; the air pump 4 inputs air into the gas distribution plate 13 and discharges it from the air holes 14. Under the action of the gas distribution plate 13, the distribution effect of the air is improved, which is convenient for the generation of hydrogen peroxide; further, the introduced oxygen removes the impurities attached to the electrode plate 2, which improves the electrolysis reaction effect of the electrode plate 2 on the sewage and is also convenient for the generation of hydrogen peroxide.

[0027] Reference Figure 3, according to the contour of the arc-shaped electrode plate 2, oxygen is transported from the air holes 14 to contact the outer wall of the lower half of the electrode plate 2. However, it is difficult for the outer wall of the upper half of the electrode plate 2 to contact oxygen. Therefore, in the embodiment of the present application, a gas distribution member is provided on the side wall of the sewage tank 1 facing the side of the arc-shaped electrode plate 2. The gas distribution member is used to direct the oxygen transported into the sewage tank 1 to flow towards the upper half of the arc-shaped electrode plate 2 to generate hydrogen peroxide. The gas distribution member includes a plurality of tracheas 15 provided on the side wall of the sewage tank 1. The tracheas 15 are vertically arranged and spaced along the length direction of the side wall of the sewage tank 1. One end of the trachea 15 is inserted into the gas distribution plate 13, and the other end is closed. The side wall of the trachea 15 facing the upper half of the arc-shaped electrode plate 2 is provided with air holes. A plurality of air holes are provided and evenly arranged along the length direction of the trachea 15. After the air pump 4 injects air into the gas distribution plate 13, the air is transported through the trachea 15 and discharged from the air holes. Since the air holes face the arc-shaped electrode plate 2, the oxygen is directionally transported to the electrode plate 2, facilitating the generation of hydrogen peroxide.

[0028] Refer to Figure 3 , further, a thin film bag 16 is provided on the trachea 15. Both ends of the thin film bag 16 are open. The thin film bag 16 is fixedly arranged on the trachea 15 and surrounds the air holes. Along the direction from bottom to top of the trachea 15, the length of the thin film bag 16 gradually increases and approaches the side wall of the arc-shaped electrode plate 2. Under the action of the thin film bag 16, it is convenient for the gas to be transported to the arc-shaped electrode plate 2 through the thin film bag 16 after moving out of the trachea 15.

[0029] Refer to Figure 5 , in the embodiment of the present application, the arc-shaped electrode plate 2 is rotatably arranged in the sewage tank 1. The arc-shaped electrode plate 2 rotates around the axis direction of the electrode plate 2. A driving member for driving the rotation of the arc-shaped electrode plate 2 is arranged in the sewage tank 1. During sewage treatment, the arc-shaped electrode plate 2 is driven to rotate by the driving member. When the electrode plate 2 rotates, the impurities attached to the electrode plate 2 fall into the sewage, thereby cleaning the surface of the electrode plate 2. Further, when the arc-shaped electrode plate 2 rotates, it is convenient to transfer the top of the arc-shaped electrode plate 2 to the bottom, facilitating the relatively uniform electrolysis of the arc-shaped electrode plate 2 with the sewage and generating hydrogen peroxide at the cathode, enabling the electrode plate 2 to have a better sewage treatment effect, and the electrode plate 2 comes into contact and reacts with the sewage everywhere, thus extending the service life of the electrode plate 2.

[0030] Refer to Figure 5, in the embodiment of the present application, the driving member includes a driving wheel 17 rotatably arranged in the sewage tank 1. The driving wheel 17 abuts against the arc-shaped electrode plate 2. The rotation axis of the driving wheel 17 is parallel to the rotation axis of the arc-shaped electrode plate 2. The diameter of the driving wheel 17 is larger than the notch width of the arc-shaped electrode plate 2. The driving member further includes a second motor 18 arranged in the sewage tank 1. The driving wheel 17 is arranged on the output shaft of the second motor 18. Starting the second motor 18, the second motor 18 drives the driving wheel 17 to rotate, and the driving wheel 17 rotates to drive the arc-shaped electrode plate 2 to rotate, and the operation is simple and convenient.

[0031] To facilitate the electrical connection between the AC variable-frequency power supply and the electrode plate 2 when the arc-shaped electrode plate 2 rotates, the output shaft of the second motor 18 includes an insulating section and a conductive section. The driving wheel 17 is arranged on the conductive section, and one electrode of the AC variable-frequency power supply is electrically connected to the conductive section.

[0032] Refer to Figure 5 , further, two positioning wheels 19 are arranged in the sewage tank 1. The two positioning wheels 19 and the driving wheel 17 are arranged in a triangular layout. The arc-shaped electrode plate 2 is clamped between the positioning wheels 19 and the driving wheel 17. Under the action of the positioning wheels 19 and the driving wheel 17, the arc-shaped electrode plate 2 is clamped inside to facilitate the stable installation of the arc-shaped electrode plate 2 in the sewage tank 1.

[0033] The implementation principle of a multi-phase cooperative catalytic oxidation sewage treatment equipment in the embodiment of the present application is as follows: When treating sewage, the AC variable-frequency power supply delivers alternating current to the electrode plate 2, and oxygen is generated on the surface of the electrode plate 2. When the electrode plate 2 changes from the anode to the cathode, the oxygen generated in the anode state and the oxygen introduced by the air pump 4 are reduced to generate hydrogen peroxide. Under the catalysis of the ultraviolet rays generated by the ultraviolet lamp tube, hydrogen peroxide generates hydroxyl radicals. Using the strong oxidizing property of hydroxyl radicals, the organic matter in the sewage is oxidized and degraded. Since one electrode plate 2 is arc-shaped and buckles the bottom of the sewage tank 1, the electrolytically generated oxygen and the supplied oxygen are blocked in the sewage tank 1, thereby increasing the hydrogen peroxide generated by reduction, and thus improving the sewage treatment effect; under the action of the air pump 4 and the delivery pipe 5, the oxygen content in the sewage is increased, further increasing the generation amount of hydrogen peroxide, and improving the sewage treatment effect.

[0034] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A multiphase cooperative catalytic oxidation sewage treatment equipment, characterized in that: It includes a sewage tank (1), electrode plates (2), an AC variable-frequency power supply, and an ultraviolet lamp (3). There are two electrode plates (2) which are immersed in the sewage tank (1). The positive and negative poles of the AC variable-frequency power supply are electrically connected to the two electrode plates (2) respectively. One of the electrode plates (2) is arc-shaped with an arc greater than 270 degrees. The arc-shaped electrode plate (2) is buckled on the bottom of the sewage tank (1) and is in a separated state from the bottom of the sewage tank (1). The other electrode plate (2) is plate-shaped and is located inside the arc-shaped electrode plate (2). It also includes an air pump (4) and a delivery pipe (5). The delivery pipe (5) is connected to the air pump (4). The outlet of the delivery pipe (5) is located at the bottom of the sewage tank (1) and faces the bottom of the arc-shaped electrode plate (2). The air delivered by the air pump (4) is blocked by the arc-shaped electrode plate (2), thus prolonging the reaction time between the air and the electrode plate (2). The ultraviolet lamp (3) is immersed in the sewage tank (1) to carry out photocatalytic reaction on hydrogen peroxide.

2. The multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 1, characterized in that: The plate-shaped electrode plate (2) is rotatably arranged in the sewage tank (1). The rotation axis of the electrode plate (2) is parallel to the bottom of the sewage tank (1) and parallel to the length direction of the arc-shaped electrode plate (2). A first motor (7) for driving the plate-shaped electrode plate (2) to rotate is arranged in the sewage tank (1).

3. The multiphase cooperative catalytic oxidation sewage treatment equipment according to claim 2, characterized in that: The plate-shaped electrode plate (2) includes a middle plate (8) and edge plates (9) arranged on both sides of the middle plate (8). The edge plates (9) are fixedly arranged on the side of the middle plate (8). The two edge plates (9) are inclined on the side wall of the middle plate (8), and the inclination directions of the two edge plates (9) are opposite. The middle part of the middle plate (8) is arranged on the output shaft of the first motor (7). The overall width of the edge plates (9) and the middle plate (8) is equal to the width of the arc-shaped electrode plate (2).

4. A multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 1, characterized in that: A water return pipe (10) is arranged in the sewage tank (1). The water inlet of the water return pipe (10) is located above the arc-shaped electrode plate (2), and the water outlet faces the space buckled by the arc-shaped electrode plate (2). A scroll fan (11) is rotatably arranged in the water return pipe (10). The scroll fan (11) is used to push the sewage in the water return pipe (10) to flow below the arc-shaped electrode plate (2).

5. The multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 1, characterized in that: A gas distribution plate (13) is arranged at the bottom of the sewage tank (1). The gas distribution plate (13) is hollow and has air holes (14) opened on the top surface. The delivery pipe (5) is communicated with the gas distribution plate (13). The arc-shaped electrode plate (2) is located above the gas distribution plate (13). A gas distribution part is arranged on the side wall of the sewage tank (1) facing the side of the arc-shaped electrode plate (2). The gas distribution part is used to make the oxygen delivered into the sewage tank (1) flow towards the upper half of the arc-shaped electrode plate (2) to generate hydrogen peroxide.

6. The multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 5, characterized in that: The gas distribution member includes a plurality of gas pipes (15) arranged on the side wall of the sewage tank (1). The gas pipes (15) are arranged vertically and spaced along the length direction of the side wall of the sewage tank (1). One end of the gas pipe (15) is inserted into the gas distribution plate (13), and the other end is closed. The side wall of the gas pipe (15) facing the upper half of the arc-shaped electrode plate (2) is provided with air holes, and a plurality of air holes are provided and evenly arranged along the length direction of the gas pipe (15).

7. A multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 6, characterized in that: A thin film bag (16) is arranged on the gas pipe (15). Both ends of the thin film bag (16) are open. The thin film bag (16) is fixedly arranged on the gas pipe (15) and surrounds the air holes. Along the direction from bottom to top of the gas pipe (15), the length of the thin film bag (16) gradually increases and approaches the side wall of the arc-shaped electrode plate (2).

8. The multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 1, wherein: The arc-shaped electrode plate (2) is rotatably arranged in the sewage tank (1). The arc-shaped electrode plate (2) rotates around the axis direction of the electrode plate (2). A driving member for driving the arc-shaped electrode plate (2) to rotate is arranged in the sewage tank (1).

9. A multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 8, characterized in that: The driving member includes a driving wheel (17) rotatably arranged in the sewage tank (1). The driving wheel (17) abuts against the arc-shaped electrode plate (2). The rotation axis of the driving wheel (17) is parallel to the rotation axis of the arc-shaped electrode plate (2). The diameter of the driving wheel (17) is larger than the notch width of the arc-shaped electrode plate (2). The driving member further includes a second motor (18) arranged in the sewage tank (1). The driving wheel (17) is arranged on the output shaft of the second motor (18). The output shaft of the second motor (18) includes an insulating section and a conductive section. The driving wheel (17) is arranged on the conductive section. One electrode of the AC variable frequency power supply is electrically connected to the conductive section.

10. A multiphase synergistic catalytic oxidation sewage treatment equipment according to claim 9, characterized in that: Two positioning wheels (19) are arranged in the sewage tank (1). The two positioning wheels (19) and the driving wheel (17) are arranged in a triangular pattern. The arc-shaped electrode plate (2) is clamped between the positioning wheels (19) and the driving wheel (17).

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