A device for treating wastewater by countercurrent ozone catalytic oxidation

Abstract

The utility model relates to sewage treatment technical field discloses a kind of countercurrent ozone catalytic oxidation sewage treatment devices, including processing box and support frame, the inner wall of processing box is fixedly connected with partition one and partition two, the bottom of processing box is fixedly connected with reaction tank, the side bottom of reaction tank is fixedly connected with ozone pipe, the inner wall of processing box is fixedly connected with reaction tube, reaction tube is equidistantly densely distributed in the inside of processing box, the bottom of reaction tube is communicated with the inside of reaction tank.The countercurrent ozone catalytic oxidation sewage treatment device, by zoning design and countercurrent contact structure, realize the efficient cooperation of sewage purification.The double dosing pipe of pretreatment zone is combined with mechanical stirring, ensure that reagent and sewage are fully mixed, improve the flocculation formation effect, reduce subsequent reaction load;Reaction zone densely distributed reaction tube lets ozone and sewage form countercurrent contact, substantially improve gas-liquid mass transfer efficiency, strengthen organic pollutant degradation effect.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically, it relates to a countercurrent ozone catalytic oxidation wastewater treatment device. Background Technology

[0002] In the field of wastewater treatment, ozone catalytic oxidation technology is widely used due to its advantages in efficiently degrading recalcitrant organic matter. However, traditional devices mostly adopt a co-current contact method, resulting in insufficient contact between ozone and wastewater, leading to low ozone utilization and unstable treatment effects. Simultaneously, uneven mixing of wastewater and reagents during the pretreatment stage can easily cause incomplete floc settling, making subsequent filtration systems prone to clogging by impurities. This necessitates frequent manual disassembly and cleaning, increasing operation and maintenance costs and interrupting the treatment process, making it difficult to meet the actual needs for continuous and stable wastewater treatment. Utility Model Content

[0003] The purpose of this invention is to provide a counter-current ozone catalytic oxidation wastewater treatment device to solve the problems mentioned in the background art.

[0004] A counter-current ozone catalytic oxidation wastewater treatment device includes a treatment tank and a support frame fixedly installed at the bottom of the treatment tank. The inner wall of the treatment tank is fixedly connected with a partition plate one and a partition plate two, and a ladder is fixedly installed on the front of the treatment tank.

[0005] A reaction tank is fixedly connected to the bottom of the treatment box, an ozone tube is fixedly connected to the bottom side of the reaction tank, and a reaction tube is fixedly connected to the inner wall of the treatment box. The reaction tubes are densely distributed at equal intervals inside the treatment box, and the bottom of the reaction tubes is connected to the inside of the reaction tank.

[0006] A third partition plate is fixedly connected to the left side of the first partition plate. The first and second partition plates divide the interior of the processing box into a pretreatment zone, a reaction zone, and a filtration zone. The third partition plate divides the pretreatment zone into a stirring zone and a sedimentation zone.

[0007] In a preferred embodiment of this utility model, a water inlet pipe is fixedly connected to the top of the back of the treatment box, an mounting plate is fixedly connected to the top and back of the inner wall of the treatment box, a dosing pipe is fixedly connected inside the mounting plate, an mounting frame is fixedly connected to the top of the inner wall of the treatment box, a motor is fixedly mounted on the top of the mounting frame, a stirring shaft is connected to the output end of the motor, and stirring blades are fixedly connected to the bottom of the stirring shaft.

[0008] In a preferred embodiment of this utility model, the bottom end of the water inlet pipe extends to the bottom of the mixing zone, two dosing pipes are provided, and a water inlet is provided on the surface of the partition plate three near the top.

[0009] In a preferred embodiment of this utility model, a water outlet is fixedly connected to the right side of the treatment box, a filter plate is fixedly connected to the right side of the second partition plate, a water leakage hole is opened on the surface of the filter plate, and a drain valve is installed at the bottom of the treatment box.

[0010] In a preferred embodiment of this utility model, a motor is fixedly installed on the front of the processing box, a lead screw is connected to the output end of the motor, a lead screw nut is connected to the outer surface of the lead screw, a connecting plate is connected to the bottom of the lead screw nut, a cleaning plate is fixedly connected to the bottom of the connecting plate, and a cleaning brush is fixedly connected to the bottom of the cleaning plate.

[0011] In a preferred embodiment of this utility model, an overhead plate is fixedly connected to the inner wall of the filtration zone, a groove is provided on the surface of the overhead plate, a slider is slidably connected inside the groove, the slider is connected to a lead screw nut, and the lead screw nut is threaded to the outer surface of the lead screw.

[0012] In a preferred embodiment of this utility model, a counterweight box is fixedly installed on the top right side of the cleaning plate, a water inlet is provided on the surface of the partition plate near the top, a movable plate is fixedly installed on the top left side of the cleaning plate, a motor is fixedly installed on the right side of the movable plate, a turntable is connected to the output end of the motor, and a cleaning brush is fixedly connected to the left side of the turntable.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This counter-current ozone catalytic oxidation wastewater treatment device achieves highly efficient synergy in wastewater purification through a zoned design and counter-current contact structure. The pretreatment zone features dual dosing pipes combined with mechanical stirring to ensure thorough mixing of the reagents and wastewater, enhancing floc formation and reducing the load on subsequent reactions. The densely distributed reaction pipes in the reaction zone allow ozone to form counter-current contact with wastewater, significantly improving gas-liquid mass transfer efficiency and enhancing the degradation of organic pollutants.

[0014] 2. This counter-current ozone catalytic oxidation wastewater treatment device uses a screw drive to reciprocate the cleaning brushes to clean the overhead plates. At the same time, a rotating cleaning brush is used to specifically clean the filter holes of the filter plate. With the help of a counterweight box, the cleanliness and fit are ensured. The device can maintain smooth filtration without manual disassembly and cleaning. This not only reduces the labor intensity of operation and maintenance personnel and avoids treatment interruptions caused by downtime for cleaning, but also reduces the frequency of replacement of vulnerable parts and extends the overall service life of the device.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram: Figure 1This is a schematic diagram of the overall structure of the processing box of this utility model; Figure 2 This is a schematic diagram of the bottom structure of the processing box of this utility model; Figure 3 This is a schematic diagram of the left side structure of the partition plate of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the right side structure of the second partition plate of this utility model; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0017] In the diagram: 1. Treatment tank; 101. Reaction tank; 102. Ozone tube; 103. Reaction tube; 2. Support frame; 3. Partition plate one; 301. Inlet pipe; 302. Mounting plate; 303. Dosing pipe; 304. Mounting frame; 305. Motor one; 306. Stirring shaft; 307. Stirring blades; 308. Partition plate three; 309. Water inlet one; 4. Partition plate two; 401. Outlet pipe; 40 2. Water inlet 2; 403. Motor; 404. Lead screw; 405. Lead screw nut; 406. Slide groove; 407. Sliding block; 408. Connecting plate; 409. Cleaning plate; 410. Sweeping brush 1; 411. Counterweight box; 412. Movable plate; 413. Motor 2; 414. Turntable; 415. Sweeping brush 2; 416. Filter plate; 417. Drain valve; 418. Elevated plate; 5. Ladder. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0019] Example 1: like Figures 1 to 6 As shown, a countercurrent ozone catalytic oxidation wastewater treatment device includes a treatment tank 1 and a support frame 2 fixedly installed at the bottom of the treatment tank 1. A partition plate 3 and a partition plate 4 are fixedly connected to the inner wall of the treatment tank 1, and a ladder 5 is fixedly installed on the front of the treatment tank 1.

[0020] A reaction tank 101 is fixedly connected to the bottom of the treatment box 1. An ozone tube 102 is fixedly connected to the bottom side of the reaction tank 101. A reaction tube 103 is fixedly connected to the inner wall of the treatment box 1. The reaction tubes 103 are densely distributed at equal intervals inside the treatment box 1. The bottom of the reaction tubes 103 is connected to the inside of the reaction tank 101.

[0021] A third partition plate 308 is fixedly connected to the left side of the first partition plate 3. The first partition plate 3 and the second partition plate 4 divide the interior of the processing box 1 into a pretreatment zone, a reaction zone and a filtration zone. The third partition plate 308 divides the pretreatment zone into a stirring zone and a sedimentation zone.

[0022] A water inlet pipe 301 is fixedly connected to the top of the back of the treatment tank 1. A mounting plate 302 is fixedly connected to the top of the inner wall of the treatment tank 1. A dosing pipe 303 is fixedly connected inside the mounting plate 302. A mounting bracket 304 is fixedly connected to the top of the inner wall of the treatment tank 1. A motor 305 is fixedly mounted on the top of the mounting bracket 304. A stirring shaft 306 is connected to the output end of the motor 305. A stirring blade 307 is fixedly connected to the bottom of the stirring shaft 306. The bottom end of the water inlet pipe 301 extends to the bottom of the stirring zone. Two dosing pipes 303 are provided. A water inlet 309 is opened on the surface of the partition plate 308 near the top.

[0023] A water outlet 401 is fixedly connected to the right side of the treatment tank 1, and a filter plate 416 is fixedly connected to the right side of the partition plate 4. The surface of the filter plate 416 is provided with a water leakage hole, and a drain valve 417 is installed at the bottom of the treatment tank 1.

[0024] A motor 403 is fixedly installed on the front of the treatment box 1. A lead screw 404 is connected to the output end of the motor 403. A lead screw nut 405 is connected to the outer surface of the lead screw 404. A connecting plate 408 is connected to the bottom of the lead screw nut 405. A cleaning plate 409 is fixedly connected to the bottom of the connecting plate 408. A cleaning brush 410 is fixedly connected to the bottom of the cleaning plate 409. An overhead plate 418 is fixedly connected to the inner wall of the filtration area. A sliding groove 406 is opened on the surface of the overhead plate 418. A slider 407 is slidably connected inside the sliding groove 406. The slider 407 is connected to the lead screw nut 405. The lead screw nut 405 is threadedly connected to the outer surface of the lead screw 404. Both ends of the lead screw 404 are connected to the inner wall of the treatment box 1 through bearing seats. A ball bearing is installed inside the bearing seat. The outer surface of the lead screw 404 is connected to the inner ring of the ball bearing.

[0025] Example 2: A water inlet 402 is provided on the surface of the partition plate 4 near the top. A counterweight box 411 is fixedly installed on the top right side of the cleaning plate 409. A movable plate 412 is fixedly installed on the top left side of the cleaning plate 409. A motor 413 is fixedly installed on the right side of the movable plate 412. A turntable 414 is connected to the output end of the motor 413. A cleaning brush 415 is fixedly connected to the left side of the turntable 414.

[0026] The reaction tube 103 is made of titanium alloy or ceramic material, which is resistant to ozone corrosion and does not affect the catalytic reaction. The inner diameter of a single tube is 20-30mm and the length is 800-1200mm.

[0027] The catalyst supported on the inner wall of reaction tube 103 is a γ-Al₂O₃-supported MnO₂-CuO composite catalyst, with a loading of 5-8 g / cm³. 2 The catalyst particle size is 20-50μm to ensure ozone activation efficiency.

[0028] The reaction tubes 103 are densely distributed with a spacing of 50-80mm, and 30-50 tubes are arranged per square meter of the treatment box cross-sectional area to ensure a gas-liquid contact area of ​​≥500m² per unit volume. 2 / m 3 .

[0029] The motor 305 has a power of 0.75-1.5kW and a rated speed of 1500r / min. The speed of the stirring blade 307 is adjusted to 150-200r / min through the reduction mechanism. The stirring blade 307 is made of stainless steel, with a diameter of 300-500mm, and there are 3-4 blades in total, arranged in a spiral.

[0030] Motor 403 is a servo motor with a power of 0.37-0.75kW and a rated speed of 3000r / min. It drives the cleaning plate 409 to move at a speed of 5-10mm / s via ball screw transmission, and the reciprocating motion covers the entire length of the overhead plate 418.

[0031] Motor 2 (413) has a power of 0.25-0.5kW and a rated speed of 3000r / min, driving sweeping brush 2 (415) to rotate at a speed of 300-500r / min. Sweeping brush 2 (415) bristles are made of a nylon and steel wire composite material, with a diameter of 0.3-0.5mm and a length of 20-30mm. Motor 1 (305), Motor 2 (413), and Motor 403 are all waterproof.

[0032] The 416 filter plate is made of quartz sand-activated carbon composite filter media with a thickness of 50-80mm. The surface water leakage holes have a diameter of 5-10μm and an opening rate of 30%-40%, ensuring a balance between filtration efficiency and water flow.

[0033] Partition plates 1 (3), 2 (4), and 3 (308) are all made of 304 stainless steel with a thickness of 8-12mm. The total area of ​​water inlets 1 (309) and 2 (402) is 15%-20% of the area of ​​the corresponding partition plates. The water inlets are 50-80mm × 80-120mm in size and there are 4-6 inlets, evenly distributed.

[0034] The counterweight box 411 has a built-in cast iron counterweight block with a total weight of 5-8kg. The counterweight can be adjusted according to the degree of fit between the cleaning brush 415 and the filter plate 416 to ensure that the contact pressure is 0.1-0.2MPa.

[0035] Installation of the wastewater treatment tank before use: Connect the supporting pipelines, connect the inlet pipe 301 to the sewage source to be treated, connect the outlet 401 to the qualified water discharge or reuse pipeline, connect the ozone pipe 102 to the ozone generator, and connect the drain valve 417 to the sewage discharge pipeline; check the electrical components, install motor 1 305, motor 403, and motor 2 413 and connect them to the power supply, and test whether each power component can start and run normally; debug the motion mechanism to ensure that the lead screw 404 and lead screw nut 405 engage smoothly, the slider 407 slides freely in the slide groove 406, and the cleaning plate 409 and cleaning brushes 410 and 415 move normally.

[0036] In the pretreatment stage, wastewater is transported to the mixing zone of the pretreatment area through the inlet pipe 301, and pretreatment agents are added through two dosing pipes 303. The motor 305 is started, driving the mixing shaft 306 and mixing blades 307 to rotate at high speed, so that the wastewater and agents are fully mixed. After the reaction, the wastewater flows into the sedimentation zone through the water outlet 309 at the top of the partition plate 308, where suspended impurities are settled. In the reaction stage, the settled wastewater enters the reaction zone, and ozone is introduced into the reaction tank 101 through the ozone pipe 102 and diffuses upward along the densely distributed reaction pipes 103 at equal intervals, forming a countercurrent contact with the downward flowing wastewater, and a catalytic oxidation reaction occurs. In the filtration stage, the reacted wastewater enters the filtration zone through the water outlet 402 at the top of the partition plate 416, and is filtered through the water leakage holes on the surface of the filter plate 416 to intercept the remaining impurities. The filtered clean water is discharged from the outlet 401.

[0037] The motor 403 is started periodically, which drives the lead screw 404 to rotate, causing the lead screw nut 405 to slide along the slide groove 406. Through the connecting plate 408, the cleaning plate 409 and the bottom cleaning brush 410 are driven to clean the surface of the overhead plate 418. At the same time, the second motor 413 is started, which drives the turntable 414 and the second cleaning brush 415 to rotate, cleaning the impurities attached to the surface of the filter plate 416. The impurities are discharged periodically through the drain valve 417.

[0038] When shutting down, first turn off the ozone generator, then stop the sewage inlet. After the sewage in the device is completely discharged, turn off the power to all power components. Regularly check the inside of the treatment tank 1 through the ladder 5, clean the sludge settled in the pretreatment area, any possible attachments in the reaction tube 103, and the impurities trapped in the filtration area. Regularly check the operating status of motor 305, motor 403, and motor 413, and replace worn cleaning brushes, sliders 407, and other vulnerable parts.

[0039] Working principle: The wastewater to be treated is transported to the mixing zone through the inlet pipe 301, with the bottom end of the inlet pipe 301 extending to the bottom of the mixing zone. This prevents the wastewater from directly impacting the liquid surface and causing splashing of the chemicals, while ensuring that the wastewater slowly diffuses upwards from the bottom, ensuring full contact with the chemicals. Simultaneously, pretreatment chemicals are added through two dosing pipes 303 fixed to the mounting plate 302. This dual dosing pipe design ensures uniform distribution of the chemicals, preventing localized excessively high or low concentrations.

[0040] Mechanical stirring enhances mixing: The motor 305, fixed in the mounting bracket 304, is started. The torque output of the motor 305 is transmitted to the stirring shaft 306, driving the bottom stirring blades 307 to rotate at high speed. The rotation of the stirring blades 307 creates vortices in the stirring zone, allowing the wastewater and the reagent to collide and mix thoroughly. This promotes the flocculation reaction between suspended particles and colloidal substances in the wastewater and the reagent, forming larger and denser flocs, laying the foundation for subsequent sedimentation and separation.

[0041] After being stirred and mixed, the wastewater flows into the sedimentation zone through the inlet 309 at the top of the partition plate 308. The inlet 309 is located near the top to prevent the water flow from directly impacting the flocs already deposited at the bottom of the sedimentation zone. At the same time, the overflow from the top ensures that the flow rate of the wastewater in the sedimentation zone slows down, providing sufficient time for the flocs to settle.

[0042] Within the sedimentation zone, the wastewater remains relatively still. The flocculated particles, being denser than water, slowly sink to the bottom under gravity, forming a sludge layer. The clarified wastewater remains in the upper part of the sedimentation zone, awaiting entry into the subsequent reaction zone. This process removes 60%-80% of suspended particulate matter from the wastewater while adsorbing some dissolved organic matter, significantly reducing the treatment load for subsequent ozone oxidation.

[0043] The high-concentration ozone generated by the ozone generator is introduced into the interior of the reaction tank 101 through the ozone pipe 102 located at the bottom side of the reaction tank 101. The reaction tank 101 is located at the bottom of the treatment box 1 and can serve as a buffer diffusion chamber for ozone, preventing the problem of excessively high local concentrations when ozone directly enters the reaction pipe 103.

[0044] The top of the reaction tank 101 is connected to multiple densely distributed reaction tubes 103 at equal intervals, and the inner wall of the reaction tubes 103 is usually loaded with catalyst. After ozone enters the reaction tank 101, it diffuses upward along the tiny pores on the inner wall of the reaction tubes 103, forming uniform microbubbles, which greatly increases the contact area between ozone and wastewater.

[0045] After the wastewater clarifies in the sedimentation zone, it enters the reaction zone and flows downward from the top due to gravity; meanwhile, ozone diffuses upward from the bottom of reaction pipe 103, creating a counter-current contact. Compared with traditional co-current contact, this avoids the problem of short contact time and low utilization rate caused by ozone's rapid rise due to buoyancy, extending the contact time between ozone and wastewater by 30%-50%. At the same time, it creates a cross-flow shear effect, further breaking up ozone bubbles and improving mass transfer efficiency.

[0046] Under the action of the catalyst on the inner wall of reaction tube 103, ozone molecules are activated to generate hydroxyl radicals, which have strong oxidizing properties. Hydroxyl radicals can non-selectively attack organic pollutants in wastewater, decomposing them into small organic molecules, which are then further oxidized into carbon dioxide and water. At the same time, ozone itself can also directly oxidize some organic pollutants, achieving decolorization and deodorization effects.

[0047] The wastewater treated in the reaction zone flows into the filtration zone through the water inlet 402 at the top of the partition plate 4. The filter plate 416 inside the filtration zone is arranged horizontally. The wastewater flows through the filter plate 416 from top to bottom. Tiny impurities in the water are trapped by the filter media, while the clean water collects downward through the water leakage holes on the surface of the filter plate 416 and is finally discharged from the outlet 401 on the right side of the treatment tank 1.

[0048] Impurities trapped during filtration and sludge settled in the sedimentation zone will gradually accumulate at the bottom of the treatment tank 1. Regularly opening the drain valve 417 at the bottom can discharge the sludge to a sludge treatment system such as a filter press, thus preventing sludge from accumulating in the device and causing blockage.

[0049] The suspended plate 418 fixed to the inner wall of the filtration zone supports the filter plate 416. After long-term operation, impurities easily remain on the surface of the suspended plate 418. The motor 403 on the front of the treatment box 1 is started, driving the lead screw 404 to rotate. The lead screw nut 405, which is threaded into the lead screw 404, moves along the lead screw axis. Simultaneously, the slider 407 connected to the lead screw nut 405 slides within the groove 406 on the surface of the suspended plate 418, ensuring smooth movement of the lead screw nut 405. The bottom of the lead screw nut 405, through the connecting plate 408, drives the cleaning plate 409 and the bottom cleaning brush 410 to move synchronously. The cleaning brush 410 makes close contact with the surface of the suspended plate 418, sweeping residual impurities to the vicinity of the drain outlet, where they are discharged through the drain valve 417.

[0050] The movable plate 412 on the top left side of the cleaning plate 409 fixes the second motor 413. Starting the second motor 413 drives the turntable 414 to rotate, and the second cleaning brush 415 on the left side of the turntable 414 rotates at high speed accordingly. The second cleaning brush 415 fits tightly against the bottom surface of the filter plate 416, which can effectively clean the impurities clogging the filter holes of the filter plate 416, restore the permeability of the filter holes, and avoid the decrease in water output efficiency caused by increased filtration resistance. In addition, the counterweight box 411 on the top right side of the cleaning plate 409 can increase the weight on the left side of the cleaning plate 409, ensuring that the second cleaning brush 415 is always in close contact with the filter plate 416, thus improving the cleaning effect.

Claims

1. A counter-current ozone catalytic oxidation wastewater treatment device, comprising a treatment tank (1) and a support frame (2) fixedly installed at the bottom of the treatment tank (1), characterized in that: The inner wall of the processing box (1) is fixedly connected with partition plate one (3) and partition plate two (4), and a ladder (5) is fixedly installed on the front of the processing box (1). The bottom of the treatment box (1) is fixedly connected to a reaction tank (101), the bottom side of the reaction tank (101) is fixedly connected to an ozone tube (102), the inner wall of the treatment box (1) is fixedly connected to a reaction tube (103), the reaction tubes (103) are densely distributed at equal intervals inside the treatment box (1), and the bottom of the reaction tubes (103) is connected to the inside of the reaction tank (101). The left side of the first partition plate (3) is fixedly connected to the third partition plate (308). The first partition plate (3) and the second partition plate (4) divide the interior of the processing box (1) into a pretreatment zone, a reaction zone and a filtration zone. The third partition plate (308) divides the pretreatment zone into a stirring zone and a sedimentation zone.

2. The countercurrent ozone catalytic oxidation wastewater treatment device according to claim 1, characterized in that: A water inlet pipe (301) is fixedly connected to the top of the back of the treatment tank (1). An installation plate (302) is fixedly connected to the top of the inner wall of the treatment tank (1). A dosing pipe (303) is fixedly connected inside the installation plate (302). An installation bracket (304) is fixedly connected to the top of the inner wall of the treatment tank (1). A motor (305) is fixedly installed on the top of the installation bracket (304). A stirring shaft (306) is connected to the output end of the motor (305). A stirring blade (307) is fixedly connected to the bottom of the stirring shaft (306).

3. The counter-current ozone catalytic oxidation wastewater treatment device according to claim 1, characterized in that: The bottom end of the water inlet pipe (301) extends to the bottom of the mixing zone. Two dosing pipes (303) are provided. A water inlet (309) is opened on the surface of the partition plate three (308) near the top.

4. The countercurrent ozone catalytic oxidation wastewater treatment device according to claim 1, characterized in that: The right side of the treatment box (1) is fixedly connected to a water outlet (401), the right side of the partition plate (4) is fixedly connected to a filter plate (416), the surface of the filter plate (416) is provided with a water leakage hole, and the bottom of the treatment box (1) is equipped with a drain valve (417).

5. The countercurrent ozone catalytic oxidation wastewater treatment device according to claim 1, characterized in that: A motor (403) is fixedly installed on the front of the processing box (1). A lead screw (404) is connected to the output end of the motor (403). A lead screw nut (405) is connected to the outer surface of the lead screw (404). A connecting plate (408) is connected to the bottom of the lead screw nut (405). A cleaning plate (409) is fixedly connected to the bottom of the connecting plate (408). A cleaning brush (410) is fixedly connected to the bottom of the cleaning plate (409).

6. The countercurrent ozone catalytic oxidation wastewater treatment device according to claim 5, characterized in that: An overhead plate (418) is fixedly connected to the inner wall of the filtration zone. A groove (406) is provided on the surface of the overhead plate (418). A slider (407) is slidably connected inside the groove (406). The slider (407) is connected to a lead screw nut (405). The lead screw nut (405) is threadedly connected to the outer surface of the lead screw (404).

7. The countercurrent ozone catalytic oxidation wastewater treatment device according to claim 5, characterized in that: The surface of the partition plate 2 (4) near the top is provided with a water inlet 2 (402). A counterweight box (411) is fixedly installed on the top right side of the cleaning plate (409). A movable plate (412) is fixedly installed on the top left side of the cleaning plate (409). A motor 2 (413) is fixedly installed on the right side of the movable plate (412). A turntable (414) is connected to the output end of the motor 2 (413). A cleaning brush 2 (415) is fixedly connected to the left side of the turntable (414).

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