Sewage treatment device based on electro-Fenton reaction catalytic oxidation

Abstract

The invention relates to the field of sewage treatment, in particular to a sewage treatment device based on electro-Fenton reaction catalytic oxidation, which comprises a treatment tank and an anode ring arranged at the top of the treatment tank, a plurality of arc-shaped cathode plates are arranged at equal intervals in the circumferential direction of the bottom of the cathode ring, an anode column is coaxially arranged at the center of the cathode ring, and a circular groove is formed in the upper end of the anode column. A plurality of air supply holes are formed in the inner wall of the circular groove; the anode column is provided with a cleaning mechanism for cleaning the arc-shaped cathode plates and the anode column, the cleaning mechanism comprises a horizontal ring which is arranged on the anode column in a sliding manner and can move back and forth along the axis of the anode column, and the horizontal ring is provided with a plurality of arc-shaped through grooves for the arc-shaped cathode plates to pass through; and a mixing mechanism for mixing electrolytes electrolyzed on the arc-shaped cathode plates and the anode columns is also arranged on the horizontal ring. According to the sewage treatment device, adhered impurities can be removed, meanwhile, the reaction speed between electrolytes can be increased, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and in particular to a sewage treatment device based on electro-Fenton reaction catalytic oxidation. Background Art

[0002] The electro-Fenton process is based on the Fenton process. It uses the Fe2* and H2O2 produced by electrochemical method as a continuous source of Fenton reagents. The two react to generate highly active hydroxyl radicals, which directly oxidize non-biodegradable organic matter into carbon dioxide and water, so as to degrade organic matter, purify wastewater and achieve the purpose of deep treatment and standard discharge.

[0003] Chinese patent: CN221955876U discloses a device for catalytic oxidation of sewage based on the electro-Fenton reaction, comprising an insulating barrel, a stainless steel container is fixedly installed inside the insulating barrel, an insulating column is fixedly installed inside the stainless steel container, a lead dioxide column is fixedly installed on the top surface of the insulating column, a first water inlet pipe and a water outlet pipe are fixedly connected to the outer side surface of the stainless steel container, a water pump is fixedly connected to the left side surface of the first water inlet pipe, a second water inlet pipe is fixedly installed on the left side surface of the water pump, a drive motor and an air pump are fixedly installed on the top surface of the insulating barrel, and a rotating shaft is fixedly installed on the output shaft of the drive motor.

[0004] In this patent, under long-term electrolysis, impurities in the sewage will adhere to the barrel wall and the lead dioxide column, resulting in a slower overflow of the electrolyte. In addition, the distance between the anode and the cathode is far, and they cannot react with each other in time, resulting in poor electrolysis effect. Summary of the invention

[0005] The main purpose of the present invention is to provide a sewage treatment device based on electro-Fenton reaction catalytic oxidation, which can remove adhered impurities through the cooperation of horizontal rings and rotating rings, and can also accelerate the reaction rate between electrolytes, thereby improving sewage treatment efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides a sewage treatment device based on electro-Fenton reaction catalytic oxidation, including a treatment tank, a cathode ring, an anode column, a cleaning mechanism and a mixing mechanism; a liquid inlet is arranged at the top edge of the treatment tank, and a liquid outlet is arranged on the top outer wall of the treatment tank; a circular perforation is arranged at the center of the top of the treatment tank, the cathode ring is arranged in the circular perforation, a plurality of arc-shaped cathode plates extending vertically downward are arranged equidistantly at the bottom of the cathode ring in the circumferential direction, an insulating ring is arranged at the center of the top of the cathode ring, the anode column is arranged in a vertical state inside the insulating ring, a circular groove is arranged at the upper end of the anode column, and a plurality of air supply holes are arranged circumferentially on the inner wall of the circular groove along the axial direction; the cleaning mechanism is arranged on the anode column and is used to clean the arc-shaped cathode plate and the anode column; the cleaning mechanism includes A horizontal ring is slidably arranged on the anode column and can move back and forth along its axis, and a plurality of arc-shaped through grooves for arc-shaped cathode plates to pass through are arranged circumferentially on the horizontal ring; a mixing mechanism is arranged on the horizontal ring and can mix the electrolyte electrolyzed on the arc-shaped cathode plate and the anode column when the horizontal ring moves; the mixing mechanism includes two rotating rings arranged at corresponding ends of the horizontal ring and can rotate with the movement of the horizontal ring, a first annular inclined portion is arranged on the inner wall of each rotating ring, and a second annular inclined portion corresponding to the first annular inclined portion is arranged at the center of both ends of the horizontal ring, the cross-section of the first annular inclined portion and the corresponding second annular inclined portion are arranged in a V-shape, a plurality of rectangular through grooves are arranged circumferentially on the horizontal ring, and a plurality of push plates are arranged circumferentially on the inner wall of each rotating ring.

[0007] Preferably, each rotating ring outer wall is circumferentially provided with a plurality of disruptor plates, the length direction of the disruptor plates is tangent to the outer wall of the corresponding arc-shaped cathode plate, each disruptor plate is provided with a strip guide groove on one side close to the outer wall of the corresponding rotating ring, and each rotating ring inner wall is circumferentially provided with a plurality of flow openings connected to the strip guide grooves, and the flow openings are located between the corresponding push plate and the disruptor plate.

[0008] Preferably, two threaded rods are rotatably provided in a mirror image on the top of the processing tank, two threaded holes cooperating with the threaded rods are circumferentially provided on each horizontal ring, the threaded rods are threadedly connected to the corresponding threaded holes, two strip grooves are mirror imaged on the outer wall of each threaded rod, a plurality of gear teeth are circumferentially provided on the inner wall of each rotating ring, two outer gear rings are rotatably provided at both ends of the horizontal ring, the outer gear rings are sleeved on the corresponding threaded rods and meshed with the gear teeth on the inner wall of the corresponding rotating ring, and two clamping blocks are mirror imaged on the inner wall of each outer gear ring, which can be slidably arranged in the corresponding strip groove.

[0009] Preferably, a driving mechanism for driving the two threaded rods to rotate synchronously is also provided on the top of the processing tank.

[0010] Preferably, the driving mechanism includes an internal gear ring and a C-shaped plate; the internal gear ring is rotatably arranged at the center of the top of the treatment tank, the upper end of each threaded rod extends out of the treatment tank and is provided with a synchronous gear, and both synchronous gears are engaged with the internal gear ring. The C-shaped plate is arranged at the center of the top of the treatment tank, and a driving motor for driving any one of the synchronous gears to rotate is arranged on the C-shaped plate.

[0011] Preferably, an air pump for delivering gas into the circular groove is further arranged on the C-shaped plate.

[0012] Preferably, a cleaning port is arranged on the outer wall of the bottom of the treatment tank.

[0013] The beneficial effects of this application compared with the prior art are as follows: 1. Through the cooperation of the horizontal ring and the threaded rod in this application, as the threaded rod rotates, the horizontal ring can move back and forth along its axis, thereby cleaning the impurities adhered to the arc-shaped cathode plate and the anode column, avoiding the accumulation of impurities on their surfaces, enabling the electrolytes to contact each other, and ensuring the synthesis efficiency of the electrolytes.

[0014] 2. Through the cooperation of the first annular inclined part and the second annular inclined part in this application, during the movement of the horizontal ring, the electrolytes on the anode column can move along the second annular inclined part onto the horizontal ring, and the electrolytes on each arc-shaped cathode plate can move along the first annular inclined part onto the horizontal ring, thereby enabling the faster production of the composite, and improving the sewage treatment efficiency.

[0015] 3. Through the cooperation of the rotating ring and the external gear ring in this application, as the two threaded rods rotate, the horizontal ring moves back and forth along its axis. The external gear rings arranged at both ends of the horizontal ring can rotate as the threaded rod rotates, so that the rotating rings at both ends of the horizontal ring can rotate synchronously. The disturbing plates arranged on the outer wall of the rotating ring can not only disturb the sewage in the treatment tank, but also the sewage can enter the interior of the rotating ring through the circulation port along the strip-shaped guiding grooves on the disturbing plates, thereby impacting the composite electrolyzed by the anode column and the arc-shaped cathode plate, enabling the composite to be more evenly dispersed into the interior of the treatment tank, and thus improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of the present invention are used to provide a further understanding of the present invention, making other features, objects, and advantages of the present invention more obvious. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 is a three-dimensional view of the present invention; Figure 2 is Figure 1 the partial enlarged view at A in Figure 3is a front view of the present invention; Figure 4 yes Figure 3 Plane section view along BB direction; Figure 5 It is the local stereoscopic Figure 1 ; Figure 6 It is the local stereoscopic Figure 2 ; Figure 7 yes Figure 6 A partial enlarged view of point C in the middle; Figure 8 It is a stereogram of the horizontal ring in the present invention.

[0017] The numbers in the above figure are: 1-processing tank; 11-liquid inlet; 12-liquid outlet; 13-circular perforation; 14-threaded rod; 141-strip groove; 142-synchronous gear; 15-cleaning port; 2- cathode ring; 21- arc cathode plate; 22- insulation ring; 3- anode column; 31- circular groove; 32- air supply hole; 4-cleaning mechanism; 41-horizontal ring; 42-arc-shaped through groove; 43-second annular inclined portion; 44-rectangular through groove; 45-threaded hole; 46-external tooth ring; 461-block; 5-mixing mechanism; 51-rotating ring; 52-first annular inclined portion; 53-pushing plate; 54-disturbing plate; 541-strip guide groove; 55-flow port; 56-gear teeth; 6-driving mechanism; 61-internal gear ring; 62-shaped plate; 621-driving motor; 622-air pump. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] See also Figures 1 to 8As shown, a sewage treatment device based on electro-Fenton reaction catalytic oxidation comprises a treatment tank 1, a cathode ring 2, an anode column 3, a cleaning mechanism 4 and a mixing mechanism 5; a liquid inlet 11 is arranged at the top edge of the treatment tank 1, and a liquid outlet 12 is arranged on the top outer wall of the treatment tank 1; a circular perforation 13 is arranged at the center of the top of the treatment tank 1, the cathode ring 2 is arranged in the circular perforation 13, a plurality of arc-shaped cathode plates 21 extending vertically downward are arranged equidistantly at the bottom of the cathode ring 2 in the circumferential direction, an insulating ring 22 is arranged at the center of the top of the cathode ring 2, the anode column 3 is arranged in a vertical state inside the insulating ring 22, a circular groove 31 is arranged at the upper end of the anode column 3, and a plurality of air supply holes 32 are arranged circumferentially on the inner wall of the circular groove 31 along the axial direction; the cleaning mechanism 4 is arranged on the anode column 3 and is used to clean the arc-shaped cathode plate 21 and the anode column 3; the cleaning mechanism 4 comprises a sliding arrangement arranged on the anode column 3 A horizontal ring 41 is provided on the horizontal ring 41 and can move back and forth along its axis, and a plurality of arc-shaped through grooves 42 for the arc-shaped cathode plate 21 to pass through are arranged circumferentially on the horizontal ring 41; a mixing mechanism 5 is arranged on the horizontal ring 41 and can mix the electrolyte electrolyzed on the arc-shaped cathode plate 21 and the anode column 3 when the horizontal ring 41 moves; the mixing mechanism 5 includes two rotating rings 51 which are arranged at corresponding ends of the horizontal ring 41 and can rotate with the movement of the horizontal ring 41, a first annular inclined portion 52 is arranged on the inner wall of each rotating ring 51, and a second annular inclined portion 43 corresponding to the first annular inclined portion 52 is arranged at the center of both ends of the horizontal ring 41, and the cross-section of the first annular inclined portion 52 and the corresponding second annular inclined portion 43 are arranged in a V-shaped shape, a plurality of rectangular through grooves 44 are arranged circumferentially on the horizontal ring 41, and a plurality of push plates 53 are arranged circumferentially on the inner wall of each rotating ring 51.

[0020] The sewage to be treated is transported into the treatment tank 1 through the liquid inlet 11, and the cathode ring 2 and the anode column 3 are energized. The anode column 3 is located at the center of the cathode ring 2. Subsequently, gas is transported into the circular groove 31 through the opening at the upper end of the anode column 3. The gas can overflow the circular groove 31 along the multiple air supply holes 32. The air inlet holes correspond to the corresponding arc-shaped cathode plates 21 one by one, so that the multiple arc-shaped cathode plates 21 can contact with the gas, thereby performing corresponding electrolysis, and the concave surfaces of the arc-shaped cathode plates 21 are all facing the outer wall direction of the anode column 3, so that the gas can be blocked while being dispersed to both sides, so that the gas can contact and react with the two adjacent arc-shaped cathode plates 21, thereby slowing down the flow rate of the gas and improving the electrolysis efficiency of the arc-shaped cathode plates 21; in this process, electrolysis is also performed on the anode column 3, and the two react to generate highly active hydroxyl radicals, which have strong flocculation, complexation and adsorption effects, thereby performing corresponding degradation of the sewage.

[0021] However, during the electrolysis process, impurities in the sewage may adhere to the arc-shaped cathode plate 21 and the anode column 3, which will make it impossible to release the electrolytic product, thereby affecting the sewage treatment efficiency; based on this situation, a horizontal ring 41 is slidably provided on the anode column 3, and during the electro-Fenton reaction, the horizontal ring 41 can slowly move back and forth along the axis of the anode column 3, so that the horizontal ring 41 can contact the anode column 3 and multiple arc-shaped cathode plates 21, thereby reciprocatingly cleaning the impurities adhered thereto, thereby ensuring the electrolysis effect.

[0022] Secondly, since the volume inside the treatment tank 1 is extremely large, during the electrolysis process, the electrolyte on the arc cathode plate 21 and the anode column 3 is relatively dispersed, resulting in a too long reaction time between the two. In order to better enable the arc cathode plate 21 and the electrolyte on the anode column 3 to contact each other, a rotatable rotating ring 51 is provided at the end of the horizontal ring 41, and the rotating ring 51 can perform corresponding positive and negative rotations with the reciprocating movement of the horizontal ring 41. Since the cross-section of the first annular inclined portion 52 and the corresponding second annular inclined portion 43 are arranged in a V-shape, the electrolyte on the anode column 3 can move to the horizontal ring 41 along the second annular inclined portion 43, and the electrolyte on each arc cathode plate 21 can move to the horizontal ring 41 along the first annular inclined portion, and each rotating ring 51 has a plurality of push plates 53 circumferentially arranged on the inner wall, and each push plate 53 is tangent to the outer wall of the corresponding arc cathode plate 21 on one side along the length direction. When the horizontal ring 41 moves upward, the rotating ring 51 at the upper end rotates, and the push plate 53 can gather the electrolyte on the arc cathode plate 21 during the rotation of the rotating ring 51, so that the electrolyte on the arc cathode plate 21 is closer to the electrolyte on the anode column 3, thereby improving the reaction effect; secondly, by arranging a plurality of rectangular through grooves 44 circumferentially on the horizontal ring 41, the product can move to the lower end of the horizontal ring 41 through the plurality of rectangular through grooves 44. At this time, the rotating ring 51 at the lower end also rotates, and the push plate 53 of the rotating ring 51 at the lower end can disturb the product, so that it can be evenly dispersed into the inside of the treatment tank 1, thereby improving the treatment effect of the sewage; similarly, when the horizontal ring 41 moves downward, it can also concentrate the reaction of the electrolyte in its moving direction; after the treatment is completed, the sewage is discharged through the liquid outlet 12, thereby realizing the continuous treatment of the sewage.

[0023] See also Figures 5 to 8 As shown, a plurality of disruptor plates 54 are circumferentially arranged on the outer wall of each rotating ring 51, and the length direction of the disruptor plates 54 is tangent to the outer wall of the corresponding arc-shaped cathode plate 21. A strip guide groove 541 is arranged on one side of each disruptor plate 54 close to the outer wall of the corresponding rotating ring 51, and a plurality of flow openings 55 connected to the strip guide grooves 541 are circumferentially arranged on the inner wall of each rotating ring 51, and the flow openings 55 are located between the corresponding push plate 53 and the disruptor plate 54.

[0024] In order to better treat the sewage, a disturbance plate 54 is arranged on the outer wall of the rotating ring 51. When the horizontal ring 41 moves, the rotating ring 51 located at the front end of the moving direction rotates. When the rotating ring 51 rotates, the disturbance plate 54 can stir the sewage inside the treatment tank 1, so that the electrolysis reactants of the arc cathode plate and the anode column 3 can better treat the sewage. At this time, the rotating ring 51 located at the rear end rotates, so as to guide the sewage, so that the sewage can enter the interior of the rotating ring 51 at the rear end along the inclined disturbance plate 54 through the strip guide groove 541 and the flow port 55, thereby impacting the electrolytic compound of the anode column 3 and the arc cathode plate 21, so that the compound can be more evenly dispersed into the interior of the treatment tank 1, thereby improving the sewage treatment efficiency. Secondly, the corresponding disturbance plates 54 on the two rotating rings 51 are perpendicular to each other. During the synchronous rotation of the two rotating rings 51, the disturbance plate 54 can better stir the sewage.

[0025] See also Figures 4 to 7 As shown, two threaded rods 14 are rotatably provided on the top of the processing tank 1 in a mirror image, and two threaded holes 45 cooperating with the threaded rods 14 are circumferentially provided on each horizontal ring 41. The threaded rods 14 are threadedly connected to the corresponding threaded holes 45. Two strip grooves 141 are mirrored on the outer wall of each threaded rod 14. A plurality of gear teeth 56 are circumferentially provided on the inner wall of each rotating ring 51. Two outer toothed rings 46 are rotatably provided at both ends of the horizontal ring 41. The outer toothed rings 46 are sleeved on the corresponding threaded rods 14 and meshed with the gear teeth 56 on the inner wall of the corresponding rotating ring 51. Two clamping blocks 461 are mirrored on the inner wall of each outer toothed ring 46. The clamping blocks 461 can be slidably provided in the corresponding strip grooves 141.

[0026] The threaded rod 14 is located between the inner wall of the corresponding rotating ring 51 and the outer wall of the cathode ring 2. As the two threaded rods 14 rotate, the threaded rod 14 engages with the threaded hole 45 on the horizontal ring 41, so that the horizontal ring 41 can move back and forth along its axial direction. In this process, by rotating the two outer toothed rings 46 set at both ends of the horizontal ring 41, with the cooperation of the block 461, it can rotate accordingly with the rotation of the threaded rod 14. The outer toothed ring 46 engages with the gear teeth 56 on the inner wall of the corresponding rotating ring 51, so that the rotating rings 51 at both ends of the horizontal ring 41 can rotate synchronously. While stirring the sewage, the sewage can impact the electrolyzed compound of the anode column 3 and the arc-shaped cathode plate 21 along the strip guide groove 541 and the flow port 55, so that the compound can be mixed with the sewage faster.

[0027] See also Figure 2 , Figures 5 to 7As shown in the figure, a driving mechanism 6 for driving two threaded rods 14 to rotate synchronously is also provided at the top of the treatment tank 1; the driving mechanism 6 includes an internal gear ring 61 and a C-shaped plate 62; the internal gear ring 61 is rotatably arranged at the center of the top of the treatment tank 1, and the upper end of each threaded rod 14 extends out of the treatment tank 1 and is provided with a synchronous gear 142, and the two synchronous gears 142 are both meshed with the internal gear ring 61. The C-shaped plate 62 is arranged at the center of the top of the treatment tank 1, and a driving motor 621 for driving any one of the synchronous gears 142 to rotate is arranged on the C-shaped plate 62.

[0028] By driving the driving motor 621 to drive any one of the synchronous gears 142 to rotate, with the rotation of the corresponding synchronous gear 142, the synchronous gear 142 is transmitted through the internal gear ring 61, so that the two threaded rods 14 can rotate synchronously. While ensuring the stability of the movement of the horizontal ring 41, the two rotating rings 51 can also rotate synchronously, so as to stir the sewage.

[0029] See Figure 2 As shown in the figure, an air pump 622 for输送 gas into the circular groove 31 is also arranged on the C-shaped plate 62.

[0030] In order to ensure the continuous输送 of gas, the air pump 622 continuously输送 gas into the circular groove 31 of the anode column 3, so as to ensure that the arc-shaped cathode plate 21 can have enough oxygen for reaction, and the continuously输送 gas can push the sewage entering the circular groove 31, so as to avoid sewage remaining inside the circular groove 31.

[0031] See Figure 1 As shown in the figure, a cleaning port 15 is arranged on the outer wall of the bottom of the treatment tank 1.

[0032] By providing the cleaning port 15, when there is too much accumulation inside the treatment tank 1, the staff can easily clean the inside of the treatment tank 1 through the cleaning port 15, so as to ensure the sewage treatment effect.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention. It should be noted that there are some inaccuracies in the original text such as "输送" which should be "输送", and the translation has been corrected as much as possible while maintaining the integrity of the original text.

Claims

1. A sewage treatment device based on electro-Fenton reaction catalytic oxidation, characterized in that: It includes a treatment tank, a cathode ring, an anode column, a cleaning mechanism and a mixing mechanism; A liquid inlet is provided at the top edge of the treatment tank, and a liquid outlet is provided on the outer wall of the top of the treatment tank; A circular perforation is provided at the center of the top of the treatment tank. The cathode ring is arranged in the circular perforation. A plurality of arc-shaped cathode plates extending vertically downward are circumferentially equidistantly arranged at the bottom of the cathode ring. An insulating ring is provided at the center of the top of the cathode ring. The anode column is arranged vertically inside the insulating ring. A circular groove is provided at the upper end of the anode column. A plurality of air supply holes are circumferentially arranged along the axial direction on the inner wall of the circular groove; The cleaning mechanism is arranged on the anode column and is used for cleaning the arc-shaped cathode plates and the anode column; The cleaning mechanism includes a horizontal ring slidably arranged on the anode column and capable of moving back and forth along its axis. A plurality of arc-shaped through grooves for allowing the arc-shaped cathode plates to pass through are circumferentially arranged on the horizontal ring; The mixing mechanism is arranged on the horizontal ring and can mix the electrolytic products electrolyzed on the arc-shaped cathode plates and the anode column when the horizontal ring moves; The mixing mechanism includes two rotating rings arranged at the corresponding ends of the horizontal ring and capable of rotating as the horizontal ring moves. A first annular inclined portion is arranged on the inner wall of each rotating ring. Second annular inclined portions corresponding to the first annular inclined portions are arranged at the centers of both ends of the horizontal ring. The cross section of the first annular inclined portion and the corresponding second annular inclined portion is arranged in a V shape. A plurality of rectangular through grooves are circumferentially arranged on the horizontal ring. A plurality of pushing plates are circumferentially arranged on the inner wall of each rotating ring.

2. A sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 1, characterized in that: A plurality of disturbing plates are circumferentially arranged on the outer wall of each rotating ring. The length direction of the disturbing plates is tangent to the outer wall of the corresponding arc-shaped cathode plate. A strip-shaped guiding groove is arranged on one side of each disturbing plate close to the outer wall of the corresponding rotating ring. A plurality of flow ports communicating with the strip-shaped guiding grooves are circumferentially arranged on the inner wall of each rotating ring. The flow ports are located between the corresponding pushing plates and the disturbing plates.

3. A sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 1, characterized in that: Two threaded rods capable of rotating are mirror-image arranged at the top of the treatment tank. Two threaded holes cooperating with the threaded rods are circumferentially arranged on each horizontal ring. The threaded rods are threadedly connected to the corresponding threaded holes. Two strip-shaped grooves are mirror-image arranged on the outer wall of each threaded rod. A plurality of gear teeth are circumferentially arranged on the inner wall of each rotating ring. Two outer gear rings capable of rotating are arranged at both ends of the horizontal ring. The outer gear rings are sleeved on the corresponding threaded rods and meshed with the gear teeth on the inner wall of the corresponding rotating ring. Two clamping blocks are mirror-image arranged on the inner wall of each outer gear ring. The clamping blocks are slidably arranged in the corresponding strip-shaped grooves.

4. A sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 3, characterized in that: A driving mechanism for driving the two threaded rods to rotate synchronously is also arranged at the top of the treatment tank.

5. A sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 4, characterized in that: The driving mechanism includes an internal gear ring and a C-shaped plate; The internal gear ring is rotatably arranged at the center of the top of the treatment tank. The upper end of each threaded rod extends out of the treatment tank and is provided with a synchronous gear. Both synchronous gears are meshed with the internal gear ring. The C-shaped plate is arranged at the center of the top of the treatment tank. A driving motor for driving any one of the synchronous gears to rotate is arranged on the C-shaped plate.

6. The sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 5 is characterized in that: An air pump for delivering gas into the circular groove is also arranged on the C-shaped plate.

7. The sewage treatment device based on electro-Fenton reaction catalytic oxidation according to claim 1 is characterized in that: A cleaning port is arranged on the outer wall of the bottom of the treatment tank.

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