Industrial sewage catalytic oxidation advanced treatment system

Abstract

The utility model relates to the technical field of industrial sewage treatment, in particular to an industrial sewage catalytic oxidation advanced treatment system which comprises a lifting tank, a catalytic oxidation reactor, a stabilizing tank, a mixed flocculation tank, a coagulative precipitation tank, a turntable filter tank and a water outlet tank, the catalytic oxidation reactor is communicated with the stabilizing tank through a first guide pipe, the stabilizing tank is connected with the mixing flocculation tank through a second guide pipe, sulfuric acid is added through a first liquid adding barrel, the pH value of inlet water is adjusted, a suitable acid environment is provided for follow-up catalytic oxidation reaction, the reaction efficiency is improved, a catalyst and other agents are accurately added through a metering pump, hydroxyl free radicals (. OH) are generated, and the reaction efficiency is improved. Organic pollutants are efficiently degraded, and a coagulant is accurately added through a coagulant storage tank and a metering pump, so that fine particles in the sewage are gathered to form larger flocs, and subsequent precipitation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial sewage treatment, in particular to an industrial sewage catalytic oxidation deep treatment system. Background Art

[0002] The traditional Fenton technology is a method of combining hydrogen peroxide (H2O2) with divalent iron ions (Fe 2+ Inorganic chemical reactions using a mixed solution of 2,4-dimethyl-1,2-dioxane as a catalyst. In 1893, chemist HJ Fenton discovered that this mixed solution has strong oxidizing properties and can oxidize many organic compounds to inorganic forms. The chemical reaction is as follows:

[0003] Fe+H2O2→Fe+OH+·OH

[0004] 1 mol of H2O2 and 1 mol of Fe 2+ After the reaction, 1 mol of Fe is generated. 3+ , and simultaneously generate 1 mol of OH- and 1 mol of hydroxyl radical (·OH). The oxidation potential of ·OH radical is 2.73V, second only to fluorine, but the peroxyl radical (·O2 - ) has an oxidation potential of only about 1.3 V, with the primary oxidizing agent being the ·OH radical. However, the removal of some inert CODs that are resistant to oxidation is ineffective.

[0005] The supporting structures of traditional Fenton technology are generally cast in concrete, which saves investment, but has the following disadvantages:

[0006] The COD removal rate is low: generally 30%~40%.

[0007] High operating cost: requires large amounts of H2O2 and Fe to be added 2+ .

[0008] Large amount of sludge: Fe 2+ It acts as a catalyst to generate Fe(OH)3 and Fe(OH)2, accompanied by the production of a large amount of sludge.

[0009] Easy to recolor: If the dosage and dosage ratio of H2O2 and ferrous sulfate are not well controlled, or the trivalent iron is not precipitated, the wastewater will easily appear slightly yellow or yellowish brown. Utility Model Content

[0010] (1) Technical problems solved

[0011] In view of the deficiencies in the prior art, the utility model provides an industrial wastewater catalytic oxidation deep treatment system.

[0012] (2) Technical solution

[0013] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: The present invention provides an industrial wastewater catalytic oxidation deep treatment system, comprising a lifting tank, a catalytic oxidation reactor, a stabilization tank, a mixing flocculation tank, a coagulation sedimentation tank, a rotary filter and an outlet tank, wherein the lifting tank is connected to the catalytic oxygen reactor through an inlet pipe, the catalytic oxidation reactor is connected to the stabilization tank through a first conduit, the stabilization tank is connected to the mixing flocculation tank through a second conduit, the mixing flocculation tank is connected to the coagulation sedimentation tank, the coagulation sedimentation tank is connected to the rotary filter through a third conduit, the rotary filter is connected to the outlet tank through a fourth conduit, a sludge thickening tank is provided at the bottom of the coagulation sedimentation tank, the sludge thickening tank is connected to the coagulation sedimentation tank, a spiral separator is provided in the sludge thickening tank, and a sewage outlet and a water outlet are provided on the sludge thickening tank.

[0014] Preferably, the lifting pool is provided with a water inlet and a booster pump, the booster pump is connected to the lifting pool through a pipeline, the output end of the booster pump is connected to the water inlet pipeline, including a liquid adding barrel 1, the liquid adding barrel 1 is connected to the water inlet pipeline through a metal pipe, and an electric valve is provided on the metal pipe, and sulfuric acid is provided in the liquid adding barrel 1.

[0015] Further preferably, the catalytic oxidation reactor is provided with a drug inlet and a drug tank, and the drug tank is connected to the drug inlet via a metering pump.

[0016] Again preferably, the first conduit is provided with a liquid pump, comprising a second liquid adding barrel, wherein the second liquid adding barrel is provided with ferrous hydrogen peroxide, and the second liquid adding barrel is connected with the first conduit through a metal pipe.

[0017] Preferably, a liquid adding barrel three is provided on the stabilization tank, and the liquid adding barrel three is connected to the stabilization tank through a metal pipe.

[0018] Further preferably, the mixing flocculation tank is provided with a coagulant storage tank and a metering pump, and the metering pump is connected to the coagulant storage tank and the mixing flocculation tank through a delivery pipeline.

[0019] Again preferably, a feeding hopper is provided on the coagulation sedimentation tank, and the feeding hopper is used for adding PAM.

[0020] Preferably, a drive motor is installed on the turntable filter, a drive shaft is provided in the turntable filter, the drive shaft is rotatably installed in the turntable filter and is connected to the output end of the drive motor, a plurality of filter discs are arranged around the drive shaft, a polyester filter cloth is provided on the filter disc, a liquid pump is provided on the turntable filter, and the liquid pump is circulated and connected to the turntable filter through a liquid guide tube.

[0021] Further preferably, a display and a water quality monitor are provided on the water outlet pool, the water quality monitor is communicated with the water outlet pool, the water quality monitor is electrically connected to the display, a drain pipe is provided on the water outlet pool, and an electric valve is provided on the drain pipe and conduit four.

[0022] (3) Beneficial effects

[0023] Compared with the existing technology, the utility model provides a catalytic oxidation deep treatment system for industrial wastewater, which has the following beneficial effects:

[0024] Boost pool:

[0025] Booster pump: ensures that sewage is smoothly lifted to the catalytic oxidation reactor, ensuring the continuous operation of the entire system.

[0026] Adjusting pH value with sulfuric acid: By adding sulfuric acid into the liquid adding tank, the pH value of the influent is adjusted to provide a suitable acidic environment for the subsequent catalytic oxidation reaction and improve the reaction efficiency.

[0027] Catalytic oxidation reactor:

[0028] Precise dosing of reagents: Catalysts and other reagents are accurately added through metering pumps to generate hydroxyl radicals (·OH) and efficiently degrade organic pollutants.

[0029] Liquid pump: ensures the smooth flow of sewage into the next treatment unit.

[0030] Stabilization pool:

[0031] Further degradation of residual organic matter: By adding other reagents or adjusting the pH value in the liquid addition tank three, stable reaction conditions can be maintained to further degrade residual organic matter.

[0032] Smooth transition: Ensure smooth transition of sewage to the mixing and flocculation tank to avoid fluctuations in water quality.

[0033] Mixing flocculation tank:

[0034] Efficient flocculation: Through the coagulant storage tank and metering pump, the coagulant is accurately added to make the fine particles in the sewage aggregate to form larger flocs, which are convenient for subsequent sedimentation.

[0035] Coagulation sedimentation tank:

[0036] Efficient precipitation: PAM is added through the hopper to further enhance the flocculation effect, make the flocs more stable, and improve the precipitation efficiency.

[0037] Sludge concentration: There is a sludge concentration tank at the bottom, which concentrates the sludge through a spiral separator to reduce the sludge volume and facilitate subsequent treatment.

[0038] Sewage outlet and drain outlet: Regularly discharge concentrated sludge and supernatant to ensure the normal operation of the sedimentation tank.

[0039] Rotating disc filter:

[0040] High-efficiency filtration: The polyester filter cloth on the filter disc intercepts suspended solids in the sewage and improves the effluent quality.

[0041] Automatic backwashing: Backwashing is performed through a liquid pump to clean impurities on the filter disc and keep the filter disc clean and running efficiently.

[0042] Outlet pool:

[0043] Real-time monitoring: Monitor the outlet water quality in real time through displays and water quality monitors to ensure that the outlet water meets the standards.

[0044] Safe discharge: Electric valves are installed on the drain pipe and conduit to control the water flow and ensure the safe discharge of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the overall system structure of the utility model;

[0046] Figure 2 This is a schematic diagram of the sewage treatment process of this utility model;

[0047] Figure 3 This is a schematic diagram of neutral water parameters discharged from sewage treatment in this utility model;

[0048] In the figure: 1. Lifting tank; 2. Water inlet; 3. Booster pump; 4. Water inlet pipe; 5. Liquid adding barrel 1; 6. Metal pipe; 7. Electric valve; 8. Catalytic oxidation reactor; 9. Chemical tank; 10. Metering pump; 11. Conduit 1; 12. Liquid adding barrel 2; 13. Stabilization tank; 14. Liquid adding barrel 3; 15. Conduit 2; 16. Coagulant storage tank; 17. Mixing and flocculation tank; 18. Coagulation and sedimentation tank; 19. Sludge thickening tank; 20. Spiral separator; 21. Sewage outlet; 22. Drain outlet; 23. Conduit 3; 24. Rotary filter; 25. Drive motor; 26. Drive shaft; 27. Filter disc; 28. Polyester filter cloth; 29. ​​Conduit 4; 30. Display; 31. Water quality monitor; 32. Drain pipe; 33. Liquid pump; 34. Hopper; 35. Water outlet tank. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0050] See also Figure 1-3 The utility model is a catalytic oxidation deep treatment system for industrial wastewater, comprising a lifting tank 1, a catalytic oxidation reactor 8, a stabilization tank 13, a mixing flocculation tank 17, a coagulation sedimentation tank 18, a rotary filter 24 and an outlet tank 35. The lifting tank 1 is connected to the catalytic oxygen reactor through an inlet pipe 4, the catalytic oxidation reactor 8 is connected to the stabilization tank 13 through a conduit 11, the stabilization tank 13 is connected to the mixing flocculation tank 17 through a conduit 2 15, the mixing flocculation tank 17 is connected to the coagulation sedimentation tank 18, the coagulation sedimentation tank 18 is connected to the rotary filter 24 through a conduit 3 23, the rotary filter 24 is connected to the outlet tank 35 through a conduit 4 29, a sludge thickening tank 19 is provided at the bottom of the coagulation sedimentation tank 18, the sludge thickening tank 19 is connected to the coagulation sedimentation tank 18, a spiral separator 20 is provided in the sludge thickening tank 19, and a sewage outlet 21 and a water outlet 22 are provided on the sludge thickening tank 19.

[0051] This industrial wastewater catalytic oxidation advanced treatment system achieves efficient advanced treatment of industrial wastewater through a lifting tank 1, catalytic oxidation reactor 8, stabilization tank 13, mixing and flocculation tank 17, coagulation and sedimentation tank 18, rotary disc filter 24, and effluent tank 35. The system utilizes heterogeneous catalytic materials and reactors to form a multi-enzyme catalytic reduction system and a multi-metal catalytic oxidation system, forming a multi-dimensional power source catalytic system. This significantly improves COD and color removal rates while reducing operating costs.

[0052] Summary of working principles

[0053] Boost Pool 1:

[0054] Water inlet 2: Sewage enters the lifting tank 1 through water inlet 2.

[0055] Booster pump 3: The booster pump 3 is connected to the lifting tank 1 through a pipeline, and lifts the sewage from the lifting tank 1 to the catalytic oxidation reactor 8.

[0056] Liquid adding barrel 5: Sulfuric acid is provided in the liquid adding barrel 5, which is connected to the water inlet pipe 4 through a metal pipe, and an electric valve 7 is provided on the metal pipe for adjusting the pH value of the inlet water.

[0057] Catalytic oxidation reactor 8:

[0058] Drug inlet: A drug inlet is provided, which is connected to the drug tank 9 through a metering pump 10 and is used for adding catalysts and other drugs.

[0059] Chemical tank 9: The required catalyst and other chemicals are stored in the chemical tank 9.

[0060] Conduit 11: The catalytic oxidation reactor 8 is connected to the stabilization tank 13 through conduit 11, and a liquid pump 33 is provided on conduit 11.

[0061] Liquid adding barrel 2 12: Ferrous hydrogen peroxide is provided in liquid adding barrel 2 12, which is connected to conduit 1 11 through a metal tube, and is used for adding ferrous hydrogen peroxide into conduit 1 11.

[0062] Stable pool 13:

[0063] Liquid adding tank 3 14: Liquid adding tank 3 14 is connected to stabilization tank 13 through metal pipe 6 and is used for adding other reagents or adjusting pH value.

[0064] Conduit 2 15: The stabilization tank 13 is connected to the mixing flocculation tank 17 via conduit 2 15.

[0065] Mixing flocculation tank 17:

[0066] Coagulant storage tank 16: stores the required coagulant.

[0067] Metering pump 10: connected to the coagulant storage tank 16 and the mixing flocculation tank 17 through a delivery pipeline, used for adding coagulant.

[0068] Conduit three 23: The mixing flocculation tank 17 is connected to the coagulation sedimentation tank 18.

[0069] Coagulation sedimentation tank 18:

[0070] Feeding hopper 34: used to add PAM to enhance the flocculation effect.

[0071] Sludge thickening tank 19: Located at the bottom of the coagulation sedimentation tank 18, it is equipped with a spiral separator 20 for thickening the sludge.

[0072] Sewage outlet 21: used to discharge concentrated sludge.

[0073] Drain port 22: used to discharge the supernatant.

[0074] Rotating disc filter 24:

[0075] The driving motor 25 is installed on the rotary filter 24 . The driving shaft 26 is rotatably installed in the rotary filter 24 and connected to the output end of the driving motor 25 .

[0076] Filter disc 27: A plurality of filter discs 27 are arranged around the drive shaft 26, and polyester filter cloth 28 is provided on the filter disc 27.

[0077] Liquid pump 33 : connected to the rotary filter 24 and the mixing flocculation tank 17 through a liquid conduit, and used for backwashing the filter disc 27 .

[0078] Conduit four 29: The rotary filter 24 is connected to the outlet tank 35 through conduit four 29.

[0079] Outlet pool 35:

[0080] Display 30: used to display water quality monitoring results.

[0081] Water quality monitor 31 : communicated with the outlet pool 35 , monitors the outlet water quality, and is electrically connected to the display 30 .

[0082] Drain pipe 32: used to discharge the treated clean water. Electric valve 7 is provided on the drain pipe 32 and the conduit 29 to control the water flow.

[0083] Working principles of each preferred technical solution

[0084] Boost Pool 1:

[0085] Water inlet 2: Sewage enters the lifting tank 1 through water inlet 2.

[0086] Booster pump 3: Booster pump 3 lifts the sewage from the lifting tank 1 to the catalytic oxidation reactor 8 to ensure that the sewage can smoothly enter the subsequent treatment unit.

[0087] Liquid adding barrel 5: The pH value of the influent is adjusted by sulfuric acid in the liquid adding barrel 5, providing a suitable acidic environment for the catalytic oxidation reaction and improving the reaction efficiency.

[0088] Catalytic oxidation reactor 8:

[0089] Drug inlet and reagent tank 9: Catalysts and other reagents, such as hydrogen peroxide (H2O2) and iron salts, are accurately added through a metering pump 10 to generate hydroxyl radicals (·OH) to degrade organic pollutants.

[0090] Conduit 11: The catalytic oxidation reactor 8 is connected to the stabilization tank 13 through a conduit 11. A liquid pump 33 is provided on the conduit 11 to ensure smooth flow of sewage.

[0091] Liquid adding barrel 2 12: The ferrous hydrogen peroxide in the liquid adding barrel 2 12 further promotes the oxidation reaction and improves the removal rate of pollutants.

[0092] Stable pool 13:

[0093] Liquid adding tank 3 14: other reagents are added or pH value is adjusted through liquid adding tank 3 14 to maintain stable reaction conditions and further degrade residual organic matter.

[0094] Conduit 2 15: The stabilization tank 13 is connected to the mixing flocculation tank 17 through conduit 2 15 to ensure that the sewage enters the next treatment unit smoothly.

[0095] Mixing flocculation tank 17:

[0096] Coagulant storage tank 16: stores the required coagulant, such as polyaluminium chloride (PAC) or polyacrylamide (PAM).

[0097] Metering pump 10: The coagulant is accurately added through the metering pump 10 to aggregate the fine particles in the sewage into larger flocs, which are convenient for subsequent sedimentation.

[0098] Coagulation sedimentation tank 18:

[0099] Feeding hopper 34: PAM is added through the feeding hopper 34 to enhance the flocculation effect and make the flocs more stable.

[0100] Sludge thickening tank 19: Located at the bottom of the coagulation sedimentation tank 18, it is equipped with a spiral separator 20 for thickening the sludge and reducing the sludge volume.

[0101] Sewage outlet 21: used to discharge concentrated sludge and clean it regularly.

[0102] Drain port 22: used to discharge the supernatant to enter the next processing unit.

[0103] Rotating disc filter 24:

[0104] Driving motor 25: The driving motor 25 drives the driving shaft 26 to rotate, causing the filter disc 27 to rotate.

[0105] Filter disc 27: The filter disc 27 is provided with a polyester filter cloth 28 to intercept suspended solids in the sewage.

[0106] Liquid pump 33: Backwashing is performed by the liquid pump 33 to clean impurities on the filter disc 27 and keep the filter disc 27 clean and running efficiently.

[0107] Conduit four 29: The rotary filter 24 is connected to the outlet tank 35 through conduit four 29 to ensure that the treated clean water enters the outlet tank 35.

[0108] Outlet pool 35:

[0109] Display 30: Displays water quality monitoring results and monitors the outlet water quality in real time.

[0110] Water quality monitor 31: connected to the water outlet pool 35, monitors the water quality of the outlet, and is electrically connected to the display 30 to ensure that the outlet water meets the standards.

[0111] Drain pipe 32: used to discharge the treated clean water. Electric valve 7 is provided on the drain pipe 32 and the conduit 29 to control the water flow and ensure the safe discharge of the water.

[0112] Efficient removal of pollutants

[0113] High COD and color removal rates: The system utilizes heterogeneous catalytic materials and reactors to form a multi-enzyme catalytic reduction system and a multi-metal catalytic oxidation system, forming a multi-dimensional power catalytic system, which greatly improves COD and color removal rates. COD removal rates reach 50%-85%, and decolorization rates reach 95%.

[0114] Broad spectrum applicability: The system can effectively remove a variety of organic pollutants, including refractory organic matter, and is suitable for various types of industrial wastewater and municipal sewage.

[0115] Reduce operating costs

[0116] Low reagent consumption: The catalyst and other reagents are added by the precise metering pump 10, which reduces the waste of reagents and lowers the operating costs.

[0117] Reduce sludge production: The system design optimizes the sludge treatment process, reduces sludge production and reduces sludge treatment costs.

[0118] Improve system stability

[0119] Continuous operation: The connection and control design between the various units of the system ensures the continuity and stability of the entire treatment process, reducing downtime and maintenance frequency.

[0120] Simplified operation and maintenance

[0121] Automatic control: The system is equipped with a display 30 and a water quality monitor 31 to monitor the water quality in real time and ensure that the water meets the standards. The use of electric valves 7 and metering pumps 10 makes operation easier.

[0122] Easy maintenance: Each unit is designed to facilitate maintenance and overhaul. For example, the backwash system of the rotary filter 24 can automatically clean the filter disc 27 to keep the filter disc 27 clean and running efficiently.

[0123] Environmental protection and resource recycling

[0124] Reduce secondary pollution: The reasonable system design reduces the generation of sludge and waste liquid, and reduces the risk of secondary pollution.

[0125] Resource recycling: The spiral separator 20 in the sludge thickening tank 19 can effectively concentrate the sludge, reduce the sludge volume, and facilitate subsequent treatment and resource utilization.

[0126] Summarize

[0127] This utility model provides a catalytic oxidation deep treatment system for industrial wastewater. By integrating a lifting tank 1, a catalytic oxidation reactor 8, a stabilization tank 13, a mixing and flocculation tank 17, a coagulation and sedimentation tank 18, a rotary filter 24, and an outlet tank 35, it achieves efficient deep treatment of industrial wastewater. The system utilizes heterogeneous catalytic materials and reactors to form a multi-enzyme catalytic reduction system and a multi-metal catalytic oxidation system, forming a multi-dimensional power source catalytic system. This significantly improves COD and color removal rates while reducing operating costs. This system has been successfully applied in multiple wastewater treatment projects, achieving excellent treatment results and economic benefits.

[0128] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A catalytic oxidation deep treatment system for industrial wastewater, characterized in that: The invention comprises a lifting tank (1), a catalytic oxidation reactor (8), a stabilization tank (13), a mixing flocculation tank (17), a coagulation sedimentation tank (18), a rotary filter (24) and an outlet tank (35), wherein the lifting tank (1) is connected to the catalytic oxygen reactor through an inlet pipe (4), the catalytic oxidation reactor (8) is connected to the stabilization tank (13) through a conduit 1 (11), the stabilization tank (13) is connected to the mixing flocculation tank (17) through a conduit 2 (15), and the mixing flocculation tank (17) is connected to the coagulation sedimentation tank. (18), the coagulation sedimentation tank (18) is connected to the rotary filter (24) through the conduit three (23), the rotary filter (24) is connected to the outlet tank (35) through the conduit four (29), a sludge thickening tank (19) is provided at the bottom of the coagulation sedimentation tank (18), the sludge thickening tank (19) is connected to the coagulation sedimentation tank (18), a spiral separator (20) is provided in the sludge thickening tank (19), and a sewage outlet (21) and a water outlet (22) are provided on the sludge thickening tank (19).

2. The industrial wastewater catalytic oxidation deep treatment system according to claim 1, characterized in that: The lifting tank (1) is provided with a water inlet (2) and a booster pump (3), the booster pump (3) is connected to the lifting tank (1) through a pipeline, the output end of the booster pump (3) is connected to the water inlet pipeline (4), and includes a liquid adding barrel (5), the liquid adding barrel (5) is connected to the water inlet pipeline (4) through a metal pipe, and the metal pipe is provided with an electric valve (7), and sulfuric acid is provided in the liquid adding barrel (5).

3. The industrial wastewater catalytic oxidation deep treatment system according to claim 2, characterized in that: The catalytic oxidation reactor (8) is provided with a drug inlet and a drug tank (9), and the drug tank (9) is connected to the drug inlet via a metering pump (10).

4. The industrial wastewater catalytic oxidation deep treatment system according to claim 3 is characterized in that: The first conduit (11) is provided with a liquid pump (33), including a second liquid adding barrel (12), wherein the second liquid adding barrel (12) is provided with ferrous hydrogen peroxide, and the second liquid adding barrel (12) is connected to the first conduit (11) through a metal pipe.

5. The industrial wastewater catalytic oxidation deep treatment system according to claim 4 is characterized in that: A third liquid adding barrel (14) is provided on the stabilization tank (13), and the third liquid adding barrel (14) is connected to the stabilization tank (13) through a metal pipe (6).

6. The industrial wastewater catalytic oxidation deep treatment system according to claim 5, characterized in that: The mixing flocculation tank (17) is provided with a coagulant storage tank (16) and a metering pump (10), and the metering pump (10) is connected to the coagulant storage tank (16) and the mixing flocculation tank (17) through a delivery pipeline.

7. The industrial wastewater catalytic oxidation deep treatment system according to claim 6, characterized in that: The coagulation sedimentation tank (18) is provided with a feeding hopper (34), and the feeding hopper (34) is used to add PAM.

8. The industrial wastewater catalytic oxidation deep treatment system according to claim 7, characterized in that: A driving motor (25) is installed on the rotary filter (24), and a driving shaft (26) is provided in the rotary filter (24). The driving shaft (26) is rotatably installed in the rotary filter (24) and is connected to the output end of the driving motor (25). A plurality of filter discs (27) are arranged around the driving shaft (26), and a polyester filter cloth (28) is provided on the filter disc (27). A liquid pump (33) is provided on the rotary filter (24), and the liquid pump (33) is circulated and connected to the rotary filter (24) through a liquid guide tube.

9. The industrial wastewater catalytic oxidation deep treatment system according to claim 8, characterized in that: The water outlet pool (35) is provided with a display (30) and a water quality monitor (31), the water quality monitor (31) is communicated with the water outlet pool, and the water quality monitor (31) is electrically connected to the display (30). The water outlet pool (35) is provided with a drain pipe (32), and the drain pipe (32) and the conduit four (29) are provided with an electric valve (7).

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