Electrocatalytic oxidation comprehensive treatment equipment and method for industrial wastewater purification

Abstract

The present invention belongs to the technical field of wastewater treatment equipment, and in particular to electrocatalytic oxidation comprehensive treatment equipment and methods for industrial wastewater purification. To address the existing problems of being unable to accurately adjust the pH value of sewage in real time and being unable to remove large suspended solids and foam carried in the sewage, the following solution is proposed. The solution comprises a plurality of electrocatalytic oxidation tubes, a raw water tank, and a production water tank. The raw water tank is used to hold sewage that has passed through a grid and a screen, and the production water tank is used to hold sewage that has undergone electrocatalytic oxidation. A sewage pipe for injecting sewage is provided at the top of the raw water tank. The solution also comprises a stirring shaft that rotates on the bottom inner wall of the raw water tank. In the present invention, pH value detection and foam cleaning operations can be completed while stirring the sewage, thereby preventing the electrocatalytic oxidation tube from being damaged by the foam in the later operation. In addition, acid salts and alkali salts can be added to the raw water tank by turning on and off the power of the electromagnet to adjust the pH value of the sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment equipment, and in particular to electrocatalytic oxidation comprehensive treatment equipment and method for purifying industrial wastewater. Background Art

[0002] Industrial wastewater refers to wastewater, sewage, and waste liquids generated during industrial production. These wastewaters contain industrial materials, intermediates, and finished products lost with the water, as well as pollutants generated during the production process. Different industrial wastewater treatment methods and equipment vary, and are primarily categorized into four main types: physical treatment, chemical treatment, physicochemical treatment, and biological treatment. High-concentration industrial wastewater refers to wastewater with high concentrations of pollutants and high toxicity, as well as complex composition, odor, high color, and poor biodegradability of organic pollutants. As society's environmental requirements increase, electrochemical water treatment technology offers unparalleled advantages over other water treatment technologies, including the lack of the need for external chemicals and special light sources, mild reaction conditions, simple operation, small footprint, short treatment times, and high efficiency.

[0003] There are still some deficiencies in the electrocatalytic oxidation process in the existing technology:

[0004] The sewage treatment effect is different under different pH conditions. However, in the prior art, the sewage is directly discharged into the electrocatalytic oxidation equipment for treatment, and the pH value of the sewage cannot be adjusted, which affects the effect of the electrocatalytic oxidation.

[0005] During the electrocatalytic oxidation process, the large suspended particles and foam carried in the sewage increase the load and wear of the electrocatalytic oxidation treatment equipment.

[0006] In response to the above problems, the present invention document proposes an electrocatalytic oxidation comprehensive treatment device and method for industrial wastewater purification. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the existing inability to accurately adjust the pH value of sewage in real time and the inability to remove large particles of suspended matter and foam carried in the sewage, and to propose an electrocatalytic oxidation comprehensive treatment equipment and method for industrial wastewater purification.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An electrocatalytic oxidation comprehensive treatment device for industrial wastewater purification comprises a plurality of electrocatalytic oxidation tubes, a raw water tank and a production water tank. The raw water tank is used to hold wastewater after passing through a grid and a screen, and the production water tank is used to hold wastewater after electrocatalytic oxidation. A sewage pipe for injecting sewage is provided at the top of the raw water tank.

[0010] The apparatus further comprises a stirring shaft, the stirring shaft being rotated on the inner wall of the bottom of the raw water tank, the outer wall of the stirring shaft being fixed with a plurality of stirring blades, a connecting pipe being provided on one side of the raw water tank, and an electronic pH meter being provided in the connecting pipe for monitoring the pH value of the sewage in the raw water tank;

[0011] The machine also includes a movable plate, which is slidably disposed in the raw water pool and is used to scrape off foam floating on the liquid surface. A drive motor is fixed to the top of the raw water pool via a frame. A U-shaped shaft is fixed to the top of the stirring shaft. The top of the U-shaped shaft rotates and extends to the top of the raw water pool and is fixedly connected to the output shaft of the drive motor.

[0012] Two storage boxes are fixed on the top of the raw water tank, and the two storage boxes are used to hold acid salts and alkaline salts respectively. Two rotating disks are rotatably connected in the raw water tank, and the top and bottom of the rotating disk extend into the storage box and the raw water tank respectively, for discharging the corresponding acid salts and alkaline salts in the storage box into the raw water tank;

[0013] An electrocatalytic oxidation structure, used for treating sewage using a plurality of electrocatalytic oxidation tubes;

[0014] The detection structure is arranged in the raw water tank and is used to detect the pH value of the sewage through an electronic pH meter;

[0015] The foam removal structure is arranged in the raw water pool and is used to scrape off the foam floating on the liquid surface;

[0016] The adding structure is arranged in the raw water pool and is used to add corresponding acid salts and alkali salts into the raw water pool.

[0017] In one possible design, the electrocatalytic oxidation structure includes a raw water pump, and multiple electrocatalytic oxidation tubes are each provided with an electrolysis module for electrocatalytically oxidizing sewage. The liquid inlet of the raw water pump is connected to the raw water pool through a hose, and one side of the multiple electrocatalytic oxidation tubes is provided with a raw water inlet and a raw water outlet. The liquid outlet of the raw water pump is provided with multiple raw water inlet pipes, and the raw water inlet pipes are connected to the corresponding raw water inlets for injecting sewage into the electrocatalytic oxidation tube for electrocatalytic oxidation treatment. One end of the multiple raw water outlets is provided with a raw water outlet pipe, and one end of the multiple raw water outlet pipes is connected to the same manifold, and one end of the manifold extends into the water production pool; the raw water pump injects the sewage in the raw water pool into the electrocatalytic oxidation tube through the raw water inlet, and the sewage is electrocatalytically oxidized by the electrolysis module in the electrocatalytic oxidation tube, and then discharged into the water production pool through the raw water outlet and the raw water outlet pipe;

[0018] It also includes a cleaning water pump and a cleaning water tank. The other side of the multiple electrocatalytic oxidation tubes is provided with a clean water inlet and a clean water outlet. The water inlet of the cleaning water pump is connected to the external water source through a hose. The water outlet of the cleaning water pump is fixed with multiple clean water inlet pipes. One end of the multiple clean water inlet pipes is respectively connected to the corresponding clean water inlets. One end of the multiple clean water outlets is fixed with a clean water outlet pipe, and one end of the multiple clean water outlet pipes is connected to the cleaning water tank. When it is necessary to clean the inside of the electrocatalytic oxidation tube and the electrolysis module, the cleaning water pump injects clean water into the electrocatalytic oxidation tube through the clean water inlet, and the clean water cleans the inside of the electrocatalytic oxidation tube, and the cleaned water is discharged into the cleaning water tank through the clean water outlet and the clean water outlet pipe for collection.

[0019] In one possible design, the detection structure includes a connecting pipe fixedly passing through the raw water tank, the connecting pipe is fixedly arranged at the top of the connecting pipe, the connecting pipe is connected to the connecting pipe, one end of the connecting pipe extends into the raw water tank, the outer wall of the connecting pipe is provided with multiple water inlet grooves located in the raw water tank, for allowing sewage to enter the connecting pipe, a piston plate is sealingly and slidably connected in the connecting pipe, the piston plate is located on one side of the water inlet groove, a connecting rod is fixed on the side of the piston plate away from the water inlet groove, a push plate is fixed at one end of the connecting rod, and the push plate cooperates with the stirring blade to drive the piston plate to move, a plurality of springs are fixed on one side of the push plate, one end of the plurality of springs are fixedly connected to the inner wall of one side of the raw water tank; when the stirring shaft drives the stirring blade to rotate slowly, the stirring blade cooperates with the push plate and pushes the piston plate to extend into the connecting pipe, the sewage in the raw water tank enters the connecting pipe through the water inlet groove, and as the piston plate moves, the sewage can be discharged into the connecting pipe, and the pH value of the sewage in the raw water tank can be monitored by an electronic pH meter, which is convenient for adjusting the pH value of the sewage later to achieve the purpose of improving the electrocatalytic oxidation effect.

[0020] In one possible design, the defoaming structure includes an inclined groove provided on the inner wall of one side of the raw water pool, a lifting plate is slidably connected to the inclined surface of the inclined groove, a sliding groove is provided in the movable plate, the movable plate is sleeved on the outer wall of the U-shaped shaft through the sliding groove, the movable plate and the lifting plate cooperate to drive the lifting plate to move up, a foam discharge port cooperating with the inclined groove is provided on one side of the raw water pool, and a collection box cooperating with the foam discharge port is fixed on one side of the raw water pool for collecting the scraped foam; the driving motor drives the stirring shaft and the stirring blade to rotate through the U-shaped shaft. The cooperation of the U-shaped shaft, the moving plate and the slide groove drives the moving plate to move back and forth in a straight line. When the moving plate moves, it can push the suspended matter, colloidal substances and foam floating on the liquid surface toward the inclined groove. The moving plate colloids with the lifting plate, and the inclined surface of the lifting plate cooperates with the inclined surface of the inclined groove to drive the lifting plate to move up. The lifting plate pushes the suspended matter, colloidal substances and foam on one side of the moving plate upward until they are discharged to the outside through the foam discharge port, thereby preventing the suspended matter, colloidal substances and foam carried in the sewage from entering the electrocatalytic oxidation tube and causing load and wear on the electrocatalytic oxidation tube.

[0021] In a possible design, the feeding structure includes two rotating shafts rotating in the raw water pool, the rotating disk fixed sleeve is arranged on the outer wall of the rotating shaft, and the two rotating shafts are respectively located below the two storage boxes, the outer walls of the two rotating disks are provided with multiple discharge troughs, one end of the two rotating shafts is fixed with a worm gear, the raw water pool is rotatably connected to two worms, and the worms are meshed with the worm gears, the top ends of the two worms are rotated and extended to the top of the raw water pool, the top ends of the two worms are rotatably connected to the first synchronous wheel, the top of the raw water pool is rotatably connected to the rotating shaft, the outer wall fixed sleeve of the rotating shaft is provided with a second synchronous wheel and a spur gear, the outer wall of the output shaft of the driving motor is fixed with a residual gear, and the residual gear is intermittently meshed with the spur gear, the second synchronous wheel and The two first synchronous wheels are connected by a synchronous belt transmission, and the driving motor drives the worm to rotate intermittently through the cooperation of the residual gear and the spur gear; the corresponding acid salt and alkali salt need to be put in, and the corresponding electromagnet is energized. A magnetic attraction force is generated between the electromagnet and the magnet block, and the driving motor drives the spur gear and the second synchronous wheel to rotate through the residual gear. The second synchronous wheel drives the two first synchronous wheels to rotate through the synchronous belt. One of the first synchronous wheels drives the worm to rotate through the cooperation of the magnet block and the electromagnet, and the worm drives the rotating shaft and the rotating disk to rotate through the worm gear. When the discharge chute rotates to the corresponding storage box, the corresponding raw materials in the storage box can be discharged into the raw water pool. With the cooperation of the stirring shaft and the stirring blades, the raw materials can be quickly mixed with the sewage to achieve the purpose of controlling the pH value of the sewage.

[0022] In a possible design, the feeding structure also includes a placement plate fixedly mounted on the outer wall of the worm, a plurality of electromagnets are fixed on the top of the placement plate, a plurality of magnet blocks are fixed on the bottom of the first synchronous wheel, and the magnet blocks cooperate with the electromagnets to generate magnetic attraction; when the corresponding electromagnets are energized, a magnetic attraction is generated between the electromagnets and the magnet blocks, and then when the first synchronous wheel rotates, the placement plate and the worm can be driven to rotate, and the acid salt and alkali salt in the corresponding storage box can be discharged into the raw water pool to achieve the purpose of controlling the pH value of the sewage.

[0023] In one possible design, the electrolysis module is composed of multiple graphite sheets and composite ceramic catalyst sheets, and the graphite sheets and composite ceramic catalyst sheets adopt a multi-sheet stacking structure, with at least 50 layers of a composite graphite sheet stacked on a composite ceramic catalyst sheet.

[0024] In one possible design, a step plate is fixed in the water production pool, and multiple partitions are fixed on the top of the step plate. An activated carbon layer is placed between the partition and the step plate to filter the treated sewage. Drain holes are provided on one side of the multiple partitions to discharge the sewage filtered by the activated carbon layer downward for further filtration.

[0025] In one possible design, multiple ultraviolet lamps are fixed on one side of the step plate, and the ultraviolet lamps are used to sterilize and disinfect the filtered sewage. Multiple transparent glass covers are fixed on one side of the step plate to protect the ultraviolet lamps. After the treated sewage enters the water production pool, it flows downward along the step plate. During the flow, it is filtered in turn by multiple activated carbon layers, and the filtered sewage is sterilized and disinfected by the multiple ultraviolet lamps and transparent glass covers, thereby further purifying the treated water.

[0026] In this application, the method for using the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification comprises the following steps:

[0027] S1. Pretreatment and floating debris removal: First, large suspended solids and floating impurities in the wastewater are filtered out using grids and screens before the wastewater enters the raw water tank. The rotation of the agitator shaft and impellers, combined with the reciprocating motion of the moving plate, effectively removes floating debris from the water surface, preventing it from burdening the subsequent electrocatalytic oxidation process.

[0028] S2. Sewage feeding and pH monitoring: While stirring, the piston plate is pushed to allow the sewage to enter the treatment system through the connecting pipe; the pH value of the sewage in the raw water tank is monitored in real time to provide a basis for subsequent adjustments and ensure the efficiency of electrocatalytic oxidation;

[0029] S3. Intelligent pH adjustment: Automatically select and add appropriate amount of acid salt or alkali salt according to monitoring results; through the drive and mechanical transmission system between the electromagnet and the magnet block, accurately control the addition of raw materials into the sewage, quickly mix and adjust the pH to the optimal range;

[0030] S4. Electrocatalytic oxidation and cleaning maintenance: The conditioned sewage enters the electrocatalytic oxidation tube, undergoes electrolytic catalytic oxidation treatment, and is then discharged into the production water pool. The cleaning system is started regularly to flush the inside of the electrocatalytic oxidation tube with clean water to maintain its efficient operation, and the clean water is recycled into the cleaning water tank.

[0031] S5. Deep purification and output: In the water production pool, sewage flows through multi-stage activated carbon filtration, combined with ultraviolet sterilization technology to comprehensively improve water quality, and ultimately produce purified water resources that meet standards. Beneficial effects

[0032] In the present invention, the feeding structure includes two rotating shafts rotating in the raw water tank, the outer walls of the two rotating disks are provided with a plurality of discharge troughs, one end of each of the two rotating shafts is fixed with a worm gear, two worms are rotatably connected in the raw water tank, and the top ends of the two worms are rotatably connected to a first synchronous wheel; the electromagnet is energized and generates a magnetic attraction between it and the magnet block, the driving motor drives the second synchronous wheel to rotate, and the second synchronous wheel drives the two first synchronous wheels to rotate through a synchronous belt, one of the first synchronous wheels drives the worm to rotate through the cooperation of the magnet block and the electromagnet, and then drives the rotating disk to rotate, which can discharge the corresponding raw materials in the storage box into the raw water tank, so as to achieve the purpose of controlling the pH value of the sewage;

[0033] In the present invention, the defoaming structure includes an inclined groove provided on the inner wall of one side of the raw water tank, a lifting plate is slidably connected to the inclined surface of the inclined groove, the movable plate is sleeved on the outer wall of the U-shaped shaft through a sliding groove, and a foam discharge port cooperating with the inclined groove is provided on one side of the raw water tank; the U-shaped shaft drives the movable plate to move back and forth linearly, which can push the suspended matter, colloidal substances and floating foam floating on the liquid surface toward the inclined groove, and the movable plate colloidally contacts the lifting plate, and the inclined surface of the lifting plate cooperates with the inclined surface of the inclined groove to drive the lifting plate upward, and the lifting plate pushes the suspended matter, colloidal substances and floating foam on one side of the movable plate upward and discharges them to the outside, thereby preventing the suspended matter, colloidal substances and floating foam carried in the sewage from entering the electrocatalytic oxidation tube and causing load and wear on the electrocatalytic oxidation tube;

[0034] In the present invention, the connecting pipe is fixedly arranged on the top of the connecting pipe, and the outer wall of the connecting pipe is provided with a plurality of water inlet grooves located in the raw water tank. A piston plate is sealingly and slidingly connected in the connecting pipe, and a push plate is fixed on one side of the piston plate; the stirring blade cooperates with the push plate and pushes the piston plate to extend into the connecting pipe, and the sewage in the raw water tank enters the connecting pipe through the water inlet groove. As the piston plate moves, the sewage can be discharged into the connecting pipe. The pH value of the sewage in the raw water tank can be monitored by an electronic pH meter, which is convenient for adjusting the pH value of the sewage in the later stage, thereby achieving the purpose of improving the electrocatalytic oxidation effect.

[0035] In the present invention, the pH value detection and foam cleaning operations can be completed while the sewage is stirred, so as to prevent the later operation of the electrocatalytic oxidation tube from being damaged by the foam. In addition, acid salts and alkali salts can be added to the raw water pool by turning on and off the power of the electromagnet to adjust the pH value of the sewage, thereby achieving the purpose of improving the later electrocatalytic oxidation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Flowchart of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0037] Figure 2 A schematic structural diagram of an electrocatalytic oxidation tube of an electrocatalytic oxidation comprehensive treatment device for industrial wastewater purification provided in Example 1 of the present invention;

[0038] Figure 3 A schematic diagram of the three-dimensional structure of the raw water tank of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0039] Figure 4 A schematic three-dimensional cross-sectional view of the raw water tank of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0040] Figure 5 A schematic diagram of a partial front cross-sectional structure of a raw water tank of an electrocatalytic oxidation comprehensive treatment device for industrial wastewater purification provided in Example 1 of the present invention;

[0041] Figure 6 for Figure 5 A in the middle is an enlarged structural diagram;

[0042] Figure 7 A schematic diagram of the three-dimensional structure of the movable plate and the U-shaped shaft of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0043] Figure 8A schematic three-dimensional cross-sectional view of the connecting pipe of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0044] Figure 9 A schematic diagram of the three-dimensional structure of the rotating shaft, rotating disk and worm gear of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0045] Figure 10 A schematic diagram of a three-dimensional exploded structure of a placement plate, a first synchronous wheel, and a worm wheel of the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification provided in Example 1 of the present invention;

[0046] Figure 11 A schematic diagram of the main cross-sectional structure of a water production tank of an electrocatalytic oxidation comprehensive treatment device for industrial wastewater purification provided in Example 2 of the present invention;

[0047] Figure 12 for Figure 11 Enlarged structural diagram at point B in the middle.

[0048] In the figure: 1. Raw water tank; 2. Raw water pump; 3. Electrocatalytic oxidation tube; 4. Raw water inlet; 5. Raw water outlet; 6. Clean water inlet; 7. Clean water outlet; 8. Raw water inlet pipe; 9. Raw water outlet pipe; 10. Water production tank; 11. Cleaning water pump; 12. Clean water inlet pipe; 13. Clean water outlet pipe; 14. Cleaning water tank; 15. Stirring shaft; 16. Stirring blade; 17. U-shaped shaft; 18. Drive motor; 19. Moving plate; 20. Inclined groove; 21. Lifting plate; 22. Foam outlet; 23. Collection box; 24. Connecting pipe; 25. Water inlet trough; 26. Piston plate. 27. Connecting rod; 28. Push plate; 29. Spring; 30. Connecting pipe; 31. Electronic pH meter; 32. Storage box; 33. Rotating shaft; 34. Rotating disk; 35. Discharge chute; 36. Worm gear; 37. First synchronous wheel; 38. Rotating shaft; 39. Second synchronous wheel; 40. Synchronous belt; 41. Spur gear; 42. Residual gear; 43. Placement plate; 44. Electromagnet; 45. Magnet block; 46. Worm; 47. Slide; 48. Sewage pipe; 49. Step plate; 50. Partition; 51. Drain hole; 52. Activated carbon layer; 53. Transparent glass cover; 54. Ultraviolet lamp. DETAILED DESCRIPTION

[0049] The technical solutions 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, rather than all the embodiments. Example

[0050] Reference Figure 1-Figure 5, treatment equipment, which is used in the field of wastewater treatment equipment, mainly includes a raw water tank 1, a water production tank 10 and multiple electrocatalytic oxidation tubes 3. The raw water tank 1 is designed to hold sewage that has been preliminarily treated by the grid and screen, and a sewage pipe 48 is provided on the top of the tank for injecting sewage into the tank;

[0051] The water production tank 10 is located to the side or below the raw water tank 1 and is used to receive and store wastewater after electrocatalytic oxidation treatment. A stirring shaft 15 is vertically mounted at the bottom center of the raw water tank 1 and is rotatably connected to the tank wall via bearings. Multiple stirring blades 16 are evenly welded to the outer wall of the stirring shaft 15, which agitate the wastewater within the tank as the stirring shaft 15 rotates, promoting uniform mixing. A U-shaped shaft 17 is welded to the top of the stirring shaft 15. The top of the U-shaped shaft 17 passes through the top of the raw water tank 1 and is connected to the output shaft of a drive motor 18 fixed to the frame.

[0052] Reference Figure 4 and Figure 5 Inside the raw water pool 1, a movable plate 19 is horizontally slidably provided, and the bottom edge of the movable plate 19 is in close contact with the liquid surface to scrape off the foam floating on the liquid surface.

[0053] Reference Figure 7 The movable plate 19 is connected to the U-shaped shaft 17 through the slide groove 47 so that it can move horizontally with the rotation of the stirring shaft 15.

[0054] Reference Figure 4 、 Figure 5 and Figure 9 Two storage bins 32 are fixedly mounted on top of the raw water tank 1, storing acid salts and alkaline salts, respectively. Two rotating disks 34 are rotatably connected to the interior of the raw water tank 1, with the top and bottom of the rotating disks 34 extending into the storage bins 32 and the interior of the raw water tank 1, respectively. The rotating disks 34 are equipped with multiple discharge chutes 35, which discharge the acid salts or alkaline salts in the storage bins 32 into the raw water tank 1 during rotation.

[0055] Reference Figure 2 and Figure 3 , between the raw water pool 1 and the water production pool 10, multiple electrocatalytic oxidation tubes 3 are installed in parallel. Each electrocatalytic oxidation tube 3 is equipped with an electrolysis module for electrocatalytic oxidation of sewage. A raw water pump 2 is installed, and its liquid inlet is connected to the bottom of the raw water pool 1 through a hose, and its liquid outlet is connected to the raw water inlet 4 of each electrocatalytic oxidation tube 3 through multiple raw water inlet pipes 8. The raw water outlet 5 of each electrocatalytic oxidation tube 3 is connected to the same manifold through a raw water outlet pipe 9, and the manifold then guides the treated sewage into the water production pool 10;

[0056] A cleaning water pump 11 and a cleaning water tank 14 are equipped to regularly clean the electrocatalytic oxidation tube 3; the water inlet of the cleaning water pump 11 is connected to the external water source through a hose, and the water outlet is connected to the clean water inlet 6 of each electrocatalytic oxidation tube 3 through multiple clean water inlet pipes 12; the clean water outlet 7 of each electrocatalytic oxidation tube 3 is connected to the cleaning water tank 14 through a clean water outlet pipe 13 to collect cleaning waste water.

[0057] Reference Figure 4 、 Figure 5 and Figure 8 The detection structure mainly includes a connecting pipe 24, a connecting pipe 30, an electronic pH meter 31, a water inlet groove 25, a piston plate 26, a connecting rod 27, a push plate 28 and a spring 29; the connecting pipe 24 vertically passes through the side wall of the raw water tank 1, one end of which extends into the tank, and the other end is connected to the connecting pipe 30 fixed outside the tank. An electronic pH meter 31 is installed inside the connecting pipe 30; the outer wall of the connecting pipe 24, in the part located inside the raw water tank 1, is evenly provided with multiple water inlet grooves 25, which are used to allow the sewage in the tank to enter the connecting pipe 24; inside the connecting pipe 24, a piston plate 26 is sealed and slidably connected, and the piston plate 26 is located on one side of the water inlet groove 25. The connecting rod 27 is fixed to the side of the piston plate 26 away from the water inlet groove 25, and the other end of the connecting rod 27 is fixed to the push plate 28; the push plate 28 cooperates with the rotation trajectory of the stirring blade 16. When the stirring blade 16 rotates near the push plate 28, it pushes the push plate 28, which in turn drives the piston plate 26 to slide within the connecting tube 24. Multiple springs 29 are fixed to one side of the push plate 28, and the other end of the spring 29 is fixedly connected to the inner wall of the raw water tank 1. The spring 29 is used to return the push plate 28 to its original position when the stirring blade 16 leaves the push plate 28.

[0058] As the agitator shaft 15 rotates, the agitator blades 16 periodically push the push plate 28, which in turn drives the piston plate 26 to slide within the connecting pipe 24. The sliding of the piston plate 26 causes the sewage in the connecting pipe 24 to enter or exit the connecting pipe 24 through the water inlet groove 25, thereby continuously updating the sewage sample detected by the electronic pH meter 31.

[0059] The electronic pH meter 31 monitors the pH value of the wastewater in real time and transmits the data to the control system. If the pH value exceeds the set range, the control system will activate the feeding system to add an appropriate amount of acid salt or alkali salt to the raw water tank 1 to adjust the pH value to within the set range.

[0060] Reference Figure 4-Figure 7The foam removal structure includes a sloped groove 20 provided on the inner wall of one side of the raw water pool 1, the inclination angle of the sloped groove 20 is designed so that the foam can naturally flow to its lower end; a lifting plate 21 is slidably connected to the slope of the sloped groove 20, and the bottom of the lifting plate 21 contacts the sloped groove 20 and can slide freely on it; a chute 47 is provided inside the movable plate 19, and the chute 47 is sleeved on the outer wall of the U-shaped shaft 17, so that the movable plate 19 can move horizontally with the rotation of the U-shaped shaft 17; the matching mechanism between the movable plate 19 and the lifting plate 21 is designed so that when the movable plate 19 moves horizontally, it can push the lifting plate 21 to move upward along the sloped groove 20; a foam discharge port 22 is provided on one side of the raw water pool 1 to match the lower end of the sloped groove 20, and a collection box 23 is fixed below the foam discharge port 22 to collect the scraped foam.

[0061] When the stirring shaft 15 drives the U-shaped shaft 17 to rotate, the movable plate 19 moves horizontally accordingly; during the movement of the movable plate 19, the designed matching mechanism pushes the lifting plate 21 to move upward along the inclined groove 20; the upward movement of the lifting plate 21 pushes the foam floating on the liquid surface toward the inclined groove 20, and discharges it into the collection box 23 through the foam discharge port 22.

[0062] Automatic scraping and collection of floating foam in the raw water pool 1 is achieved, thereby improving the efficiency and effect of wastewater treatment.

[0063] Reference Figure 4 、 Figure 5 、 Figure 9 and Figure 10 The feeding structure includes two rotating shafts 33 installed in the raw water tank 1, each rotating shaft 33 is fixedly provided with a rotating disk 34, and the two rotating disks 34 are respectively located below the two storage boxes 32; a plurality of discharge troughs 35 are provided on the outer wall of the rotating disk 34, which are used to discharge the acid salt or alkali salt in the storage box 32 into the raw water tank 1 during rotation; one end of the two rotating shafts 33 is fixed with a worm gear 36, and the raw water tank 1 is rotatably connected to two worms 46 that mesh with the worm gear 36; the top of the worm gear 46 rotates and extends to the top of the raw water tank 1, and is fixed with a first synchronous wheel 37; the top of the raw water tank 1 is rotatably connected to the rotating shaft 38, and the second synchronous wheel 39 and the spur gear 41 are fixed on the rotating shaft 38; a residual gear 42 is fixed on the output shaft of the drive motor 18, and the residual gear 42 is intermittently meshed with the spur gear 41 to drive the rotating shaft 38 to rotate intermittently; the second synchronous wheel 39 is connected to the two first synchronous wheels 37 through a synchronous belt 40 to achieve synchronous rotation.

[0064] When the drive motor 18 is working, its output shaft drives the residual gear 42 to rotate; the residual gear 42 is intermittently engaged with the spur gear 41, driving the rotating shaft 38 and the second synchronous wheel 39 to intermittently rotate; the second synchronous wheel 39 drives the two first synchronous wheels 37 and the worm 46 to rotate synchronously through the synchronous belt 40; the rotation of the worm 46 drives the worm wheel 36 and the rotating shaft 33 to rotate, and then drives the rotating disk 34 to rotate; the rotation of the rotating disk 34 causes the discharge chute 35 to periodically align with the discharge port of the storage box 32, thereby realizing automatic feeding.

[0065] Automatic acid or alkali addition regulation of the sewage in the raw water tank 1 is realized, thereby improving the automation degree and regulation accuracy of the wastewater treatment.

[0066] Reference Figure 4 、 Figure 5 、 Figure 9 and Figure 10 The feeding structure also includes a placement plate 43 fixedly mounted on the outer wall of the worm 46, and a plurality of electromagnets 44 are fixed on the top of the placement plate 43; a plurality of magnet blocks 45 are fixed on the bottom of the first synchronous wheel 37, and these magnet blocks 45 correspond to the electromagnets 44.

[0067] When the drive motor 18 stops working, the electromagnet 44 can be activated through the control system to generate a magnetic attraction between it and the magnet block 45. The magnetic attraction locks the first synchronous wheel 37 and the worm 46 in a specific position to prevent them from continuing to rotate due to inertia or other reasons. In this way, the timing and amount of adding materials can be precisely controlled when needed to avoid over- or under-addition.

[0068] The stability and control accuracy of the feeding structure are improved, and the effect of wastewater treatment is further improved.

[0069] The electrolysis module is composed of multiple graphite sheets and composite ceramic catalyst sheets stacked alternately, ensuring that each layer of graphite sheets and the adjacent layer are composite ceramic catalyst sheets, forming an alternating multi-layer structure.

[0070] The total number of layers is at least 50, that is, it contains at least 25 layers of graphite sheets and 25 layers of composite ceramic catalyst sheets. The layers are tightly combined by appropriate fixing methods such as adhesives or mechanical compression to ensure the stability and efficiency of the electrolysis process.

[0071] When wastewater passes through the electrolysis module, the graphite sheets act as electrodes to provide current channels, while the composite ceramic catalyst sheets use their catalytic properties to promote the oxidation reaction of organic matter in the wastewater; the multi-layer stacking structure increases the contact area between the wastewater and the electrodes and catalysts, thereby improving the electrolysis efficiency and treatment effect.

[0072] This multi-layer stacked electrolysis module design can more effectively remove organic matter and pollutants from wastewater, improving the efficiency and purification effect of wastewater treatment. Example

[0073] refer to Figure 11 and Figure 12 , an improvement based on Example 1: a step plate 49 is fixed inside the water production pool 10, and a plurality of partitions 50 are evenly distributed on the top of the step plate 49, forming an independent filtering space between the partitions 50; an activated carbon layer 52 is filled between each partition 50 and the step plate 49, which is used to adsorb and filter residual impurities and odors in the treated sewage; a drainage hole 51 is provided on one side of each partition 50 to ensure that the sewage filtered by the activated carbon layer 52 can be smoothly discharged downward and continue to enter the next layer of filtration or collection.

[0074] The treated sewage first enters the first activated carbon layer 52 on the step plate 49 for preliminary filtration; the filtered sewage enters the next activated carbon layer 52 through the drainage hole 51 and continues to be filtered until the set number of filtration layers is reached; finally, the sewage filtered through the multiple activated carbon layers 52 is collected or further processed.

[0075] Through the filtering effect of multiple layers of activated carbon, residual impurities, odors and harmful substances in sewage can be effectively removed, improving the cleanliness and safety of the effluent.

[0076] refer to Figure 11 and Figure 12 A plurality of ultraviolet lamps 54 are fixed on one side of the step plate 49. The irradiation range of the ultraviolet lamps 54 covers the entire filtration area and is used to sterilize and disinfect the filtered sewage. In order to protect the ultraviolet lamps 54 and prevent them from being directly exposed to the external environment, a plurality of transparent glass covers 53 are also fixed on the same side of the step plate 49. Each transparent glass cover 53 corresponds to an ultraviolet lamp 54, ensuring that the ultraviolet lamps 54 work in a closed environment.

[0077] When the filtered sewage flows through the irradiation area of the ultraviolet lamp 54, the ultraviolet rays can destroy the DNA structure of microorganisms such as bacteria and viruses, thereby achieving the purpose of sterilization and disinfection; the transparent glass cover 53 not only protects the ultraviolet lamp 54 from external contamination and damage, but also allows ultraviolet rays to penetrate and act on the microorganisms in the sewage.

[0078] By ultraviolet sterilization and disinfection, the microbial content in the outlet water can be further reduced, and the hygienic standard and safety of the outlet water can be improved. Meanwhile, the design of the transparent glass cover 53 also ensures the stable operation and long-term use of the ultraviolet lamp 54.

[0079] The method for using the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification comprises the following steps:

[0080] S1. Remove large particles of suspended matter, floating matter and other impurities in the wastewater through physical methods such as grids and screens, and then take the sewage and discharge it into the raw water pool 1. The driving motor 18 drives the stirring shaft 15 and the stirring blade 16 to rotate through the U-shaped shaft 17. The cooperation of the U-shaped shaft 17, the moving plate 19 and the slide 47 drives the moving plate 19 to move back and forth linearly. At this time, the moving plate 19 is at the liquid surface position. When moving, the moving plate 19 can push the suspended matter, colloidal matter and foam floating on the liquid surface toward the inclined groove 20. The moving plate 19 touches the lifting plate 21. The inclined surface of the lifting plate 21 cooperates with the inclined surface of the inclined groove 20 to drive the lifting plate 21 to move upward. The lifting plate 21 pushes the suspended matter, colloidal matter and foam on one side of the moving plate 19 upward until they are discharged to the outside through the foam discharge port 22, thereby preventing the suspended matter, colloidal matter and foam carried in the sewage from entering the electrocatalytic oxidation tube 3 and causing load and wear on the electrocatalytic oxidation tube 3.

[0081] S2. When the stirring shaft 15 drives the stirring blade 16 to rotate slowly, the stirring blade 16 cooperates with the push plate 28 and pushes the piston plate 26 to extend into the connecting pipe 24. The sewage in the raw water tank 1 enters the connecting pipe 24 through the water inlet groove 25. As the piston plate 26 moves, the sewage can be discharged into the connecting pipe 30. The pH value of the sewage in the raw water tank 1 can be monitored by the electronic pH meter 31, which is convenient for adjusting the pH value of the sewage later, thereby achieving the purpose of improving the electrocatalytic oxidation effect;

[0082] S3. When the pH value needs to be adjusted, the corresponding acid salt and alkali salt need to be added, and the corresponding electromagnet 44 is energized. A magnetic attraction is generated between the electromagnet 44 and the magnet block 45. The driving motor 18 drives the spur gear 41 and the second synchronous wheel 39 to rotate through the residual gear 42. The second synchronous wheel 39 drives the two first synchronous wheels 37 to rotate through the synchronous belt 40. One of the first synchronous wheels 37 drives the worm 46 to rotate through the cooperation of the magnet block 45 and the electromagnet 44. The worm 46 drives the rotating shaft 33 and the rotating disk 34 to rotate through the worm gear 36. When the discharge chute 35 rotates into the corresponding storage box 32, the corresponding raw materials in the storage box 32 can be discharged into the raw water pool 1. With the cooperation of the stirring shaft 15 and the stirring blade 16, the raw materials can be quickly mixed with the sewage to achieve the purpose of controlling the pH value of the sewage;

[0083] S4. After the pH value of the sewage is adjusted, the raw water pump 2 injects the sewage in the raw water tank 1 into the electrocatalytic oxidation tube 3 through the raw water inlet 4. After electrolytic catalytic oxidation in the electrolysis module in the electrocatalytic oxidation tube 3, the sewage is discharged into the water production tank 10 through the raw water outlet 5 and the raw water outlet pipe 9. When it is necessary to clean the inside of the electrocatalytic oxidation tube 3 and the electrolysis module, the cleaning water pump 11 injects clean water into the electrocatalytic oxidation tube 3 through the clean water inlet 6. The clean water cleans the inside of the electrocatalytic oxidation tube 3, and the cleaned water is discharged into the cleaning water tank 14 through the clean water outlet 7 and the clean water outlet pipe 13 for collection.

[0084] S5. After the treated sewage enters the water production pool 10, it flows downward along the step plate 49 and is filtered by multiple activated carbon layers 52 in sequence during the flow. The filtered sewage is sterilized and disinfected by multiple ultraviolet lamps 54 and transparent glass covers 53 to further purify the treated water.

[0085] However, as is well known to those skilled in the art, the working principles and wiring methods of the ultraviolet lamp 54, electromagnet 44, drive motor 18, electronic pH meter 31, raw water pump 2 and cleaning water pump 11 are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0086] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification, characterized in that: The invention comprises a plurality of electrocatalytic oxidation tubes (3), a raw water pool (1) and a water production pool (10), wherein the raw water pool (1) is used to hold sewage after passing through a grid and a screen, and the water production pool (10) is used to hold sewage after electrocatalytic oxidation, and a sewage pipe (48) for injecting sewage is provided at the top of the raw water pool (1); The apparatus further comprises a stirring shaft (15), the stirring shaft (15) being rotated on the inner wall of the bottom of the raw water tank (1), a plurality of stirring blades (16) being fixed to the outer wall of the stirring shaft (15), a connecting pipe (30) being provided on one side of the raw water tank (1), an electronic pH meter (31) being provided in the connecting pipe (30) for monitoring the pH value of the sewage in the raw water tank (1); It also includes a movable plate (19) which is slidably arranged in the raw water pool (1) and is used to scrape off foam floating on the liquid surface. A driving motor (18) is fixed to the top of the raw water pool (1) through a frame. A U-shaped shaft (17) is fixed to the top of the stirring shaft (15). The top of the U-shaped shaft (17) rotates and extends to the top of the raw water pool (1) and is fixedly connected to the output shaft of the driving motor (18). Two storage boxes (32) are fixed on the top of the raw water tank (1), and the two storage boxes (32) are used to contain acid salts and alkaline salts respectively. Two rotating disks (34) are rotatably connected in the raw water tank (1), and the top and bottom of the rotating disk (34) extend into the storage boxes (32) and the raw water tank (1) respectively, and are used to discharge the corresponding acid salts and alkaline salts in the storage boxes (32) into the raw water tank (1); An electrocatalytic oxidation structure for treating sewage using a plurality of electrocatalytic oxidation tubes (3); A detection structure is provided in a raw water pool (1) and is used to detect the pH value of sewage by means of an electronic pH meter (31); the detection structure comprises a connecting pipe (24) fixedly penetrating the raw water pool (1); the connecting pipe (30) is fixedly provided at the top of the connecting pipe (24); the connecting pipe (24) is connected to the connecting pipe (30); one end of the connecting pipe (24) extends into the raw water pool (1); the outer wall of the connecting pipe (24) is provided with a plurality of water inlet grooves (25) located in the raw water pool (1) for allowing sewage to enter the connecting pipe (24); A piston plate (26) is sealed and slidably connected inside the connecting pipe (24), and the piston plate (26) is located on one side of the water inlet trough (25). A connecting rod (27) is fixed on the side of the piston plate (26) away from the water inlet trough (25). A push plate (28) is fixed to one end of the connecting rod (27), and the push plate (28) cooperates with the stirring blade (16) to drive the piston plate (26) to move. A plurality of springs (29) are fixed to one side of the push plate (28), and one end of each of the plurality of springs (29) is fixedly connected to the inner wall of one side of the raw water tank (1); A defoaming structure is provided in the raw water pool (1) and is used for scraping off the foam floating on the liquid surface; the defoaming structure comprises an inclined groove (20) provided on the inner wall of one side of the raw water pool (1); a lifting plate (21) is slidably connected to the inclined surface of the inclined groove (20); a sliding groove (47) is provided in the movable plate (19); and the movable plate (19) is sleeved on the outer wall of the U-shaped shaft (17) through the sliding groove (47); The adding structure is arranged in the raw water pool (1) and is used to add corresponding acid salts and alkali salts into the raw water pool (1).

2. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 1 is characterized in that: The electrocatalytic oxidation structure comprises a raw water pump (2), and multiple electrocatalytic oxidation tubes (3) are each provided with an electrolysis module for electrocatalytically oxidizing sewage. The liquid inlet of the raw water pump (2) is connected to the raw water pool (1) through a hose. One side of the multiple electrocatalytic oxidation tubes (3) is provided with a raw water inlet (4) and a raw water outlet (5). The liquid outlet of the raw water pump (2) is provided with multiple raw water inlet pipes (8), and the raw water inlet pipes (8) are connected to the corresponding raw water inlet (4) for injecting sewage into the electrocatalytic oxidation tube (3) for electrocatalytic oxidation treatment. One end of the multiple raw water outlets (5) is provided with a raw water outlet pipe (9), and one end of the multiple raw water outlet pipes (9) is connected to the same manifold, and one end of the manifold extends into the water production pool (10); The invention also includes a cleaning water pump (11) and a cleaning water tank (14). The other side of the plurality of electrocatalytic oxidation tubes (3) is provided with a clean water inlet (6) and a clean water outlet (7). The water inlet of the cleaning water pump (11) is connected to an external water source through a hose. The water outlet of the cleaning water pump (11) is fixed with a plurality of clean water inlet pipes (12). One end of the plurality of clean water inlet pipes (12) is respectively connected to the corresponding clean water inlet (6). One end of the plurality of clean water outlets (7) is fixed with a clean water outlet pipe (13). One end of the plurality of clean water outlet pipes (13) is connected to the cleaning water tank (14).

3. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 2, characterized in that: The movable plate (19) cooperates with the lifting plate (21) to drive the lifting plate (21) to move upward. A foam discharge port (22) cooperating with the inclined groove (20) is provided on one side of the raw water pool (1). A collection box (23) cooperating with the foam discharge port (22) is fixed on one side of the raw water pool (1) for collecting scraped foam.

4. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 3 is characterized in that: The feeding structure includes two rotating shafts (33) rotating in the raw water pool (1), a rotating disk (34) fixedly sleeved on the outer wall of the rotating shaft (33), and the two rotating shafts (33) are respectively located below the two storage boxes (32), the outer walls of the two rotating disks (34) are provided with a plurality of discharge troughs (35), one end of the two rotating shafts (33) is fixed with a worm wheel (36), the raw water pool (1) is connected to two worms (46) for rotation, and the worms (46) are meshed with the worm wheel (36), the top ends of the two worms (46) are rotated and extended to the top of the raw water pool (1), and the two worms (46) are connected to the raw water pool (1). ) are rotatably connected to the top of the first synchronous wheel (37), the top of the raw water tank (1) is rotatably connected to the rotating shaft (38), the outer wall of the rotating shaft (38) is fixedly sleeved with a second synchronous wheel (39) and a spur gear (41), the outer wall of the output shaft of the driving motor (18) is fixed with a residual gear (42), and the residual gear (42) and the spur gear (41) are intermittently meshed, the second synchronous wheel (39) and the two first synchronous wheels (37) are connected by a synchronous belt (40), and the driving motor (18) drives the worm (46) to rotate intermittently through the cooperation of the residual gear (42) and the spur gear (41).

5. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 4 is characterized in that: The feeding structure further comprises a placement plate (43) fixedly sleeved on the outer wall of the worm (46), a plurality of electromagnets (44) are fixed on the top of the placement plate (43), a plurality of magnet blocks (45) are fixed on the bottom of the first synchronous wheel (37), and the magnet blocks (45) cooperate with the electromagnets (44) to generate magnetic attraction.

6. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 5, characterized in that: The electrolysis module is composed of multiple graphite sheets and composite ceramic catalyst sheets, and the graphite sheets and composite ceramic catalyst sheets adopt a multi-sheet stacking structure, with at least 50 layers of a graphite sheet superimposed on a composite ceramic catalyst sheet.

7. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 6, characterized in that: A step plate (49) is fixed in the water production pool (10), and a plurality of partitions (50) are fixed on the top of the step plate (49). An activated carbon layer (52) is placed between the partition (50) and the step plate (49) for filtering the treated sewage. A drainage hole (51) is provided on one side of the plurality of partitions (50) for discharging the sewage filtered by the activated carbon layer (52) downward for further filtration.

8. The electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 7, characterized in that: A plurality of ultraviolet lamps (54) are fixed on one side of the step plate (49), and the ultraviolet lamps (54) are used to sterilize and disinfect the filtered sewage. A plurality of transparent glass covers (53) are fixed on one side of the step plate (49) to protect the ultraviolet lamps (54).

9. The method for using the electrocatalytic oxidation comprehensive treatment equipment for industrial wastewater purification according to claim 8, characterized in that: The following steps are involved: S1. Pretreatment and removal of floating matter: First, large suspended solids and floating impurities in the wastewater are filtered out using a grid and a screen, and then the wastewater enters the raw water tank (1); through the rotation of the stirring shaft (15) and the stirring blade (16) and the reciprocating movement of the moving plate (19), floating matter on the water surface is effectively discharged to avoid burdening the subsequent electrocatalytic oxidation process; S2. Sewage feeding and pH monitoring: While stirring, the piston plate (26) is pushed to allow the sewage to enter the connecting pipe (30) through the connecting pipe (24); the pH value of the sewage in the raw water tank (1) is monitored in real time to provide a basis for subsequent adjustments and ensure the efficiency of electrocatalytic oxidation; S3. Intelligent pH adjustment: According to the monitoring results, the appropriate amount of acid salt or alkaline salt is automatically selected and added; through the drive between the electromagnet (44) and the magnet block (45), the raw materials are accurately controlled to be added to the sewage, and the pH is quickly mixed and adjusted to the optimal range; S4, electrocatalytic oxidation and cleaning maintenance: the conditioned sewage enters the electrocatalytic oxidation tube (3), is treated by electrolytic catalytic oxidation, and is then discharged into the water production pool (10); the cleaning system is started regularly to flush the inside of the electrocatalytic oxidation tube (3) with clean water to maintain its efficient operation, and the clean water is recovered to the cleaning water tank (14); S5. Deep purification and output: In the water production pool (10), the sewage flows through the multi-stage activated carbon layer (52) for filtration, combined with ultraviolet sterilization technology to comprehensively improve the water quality, and finally produce purified water resources that meet the standards.

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