Self-circulation anaerobic ammonia oxidation biological sewage treatment equipment

Abstract

The application discloses a kind of self-circulation anaerobic ammonia oxidation biological sewage treatment equipment, belong to sewage treatment technical field;It includes pool body, the pool body is fixedly connected with drain pipe, the pool body is fixedly installed anaerobic assembly, the pool body is installed with fixed frame by bolt assembly, the fixed frame is fixedly connected with multiple filler plates, the pool body is fixedly installed absorption assembly, the absorption assembly includes the moving frame of sliding sleeve and connects at the outside of filler plate, the moving frame is rotatably connected with multiple rotating shafts, multiple rotating shafts are located at the upside and downside of filler plate and symmetrically arranged.The application can form flushing of excess biofilm shedding tissue outside filler plate under the action of flushing pipe and flushing head when treating sewage, and the whole work is automatically carried out.Compared with removing excess biofilm by adjusting pump body, it does not need to stop and replace, ensures the filtration quality, and does not affect the overall filtration efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a self-circulating anaerobic ammonia oxidation biological wastewater treatment device. Background Technology

[0002] Self-circulating anaerobic ammonia oxidation biological wastewater treatment technology, as a novel, highly efficient, and low-carbon wastewater treatment method, relies on specific microbial communities (mainly anaerobic ammonia oxidizing bacteria) under specific conditions to directly convert ammonia nitrogen and nitrite nitrogen into nitrogen gas, thereby removing nitrogen from wastewater. During the wastewater treatment process, the biofilm thickens over time, leading to blockages and reduced treatment efficiency. This necessitates flushing, interrupting normal water intake and forcibly injecting air or water (or a combination of air and water) from the bottom of the reactor. The powerful upward impact causes the packing particles to rub and expand, shearing and peeling off the excessively thick biofilm, which is then flushed out of the system with the water flow. While the overall operation is simple, the device is entirely submerged in water, and the strong corrosive effect reduces its lifespan. Furthermore, flushing damages the biofilm, requiring re-cultivation during subsequent wastewater filtration, significantly hindering normal wastewater treatment efficiency. Therefore, this paper proposes a self-circulating anaerobic ammonia oxidation biological wastewater treatment device. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-circulating anaerobic ammonia oxidation biological wastewater treatment device.

[0004] The present invention adopts the following technical solution: A self-circulating anaerobic ammonia oxidation biological wastewater treatment device includes a tank body with a drain pipe fixedly connected through it. An anaerobic component is fixedly installed in the tank body. A fixed frame is installed in the tank body via bolts. Multiple packing plates are fixedly connected to the fixed frame. An absorption component is fixedly installed in the tank body. The absorption component includes a movable frame slidably sleeved on the outside of the packing plates. Multiple rotating shafts are rotatably connected to the movable frame. The multiple rotating shafts are symmetrically arranged on the upper and lower sides of the packing plates. A rotating cylinder is fixedly connected to each rotating shaft. A flushing pipe is sleeved on the rotating cylinder. A sliding groove is opened inside the rotating cylinder, and a slider is slidably connected within the groove. The slider and the flushing pipe are fixedly connected. A flushing head is fixedly connected to the flushing pipe. A rotating component for controlling the rotation of the rotating shafts is fixedly installed in the movable frame. A movable component for controlling the movement of the movable frame is also fixedly installed in the tank body.

[0005] Preferably, the moving component includes a gantry plate fixedly installed on the upper side of the pool body, a fixed motor fixedly connected to the gantry plate, a reciprocating lead screw fixedly connected to the output end of the fixed motor, a reciprocating sleeve fitted onto the reciprocating lead screw, a moving plate fixedly connected to the reciprocating sleeve via a connecting rod, the connecting rod and the gantry plate being slidably connected, and a plurality of moving rods fixedly connected to the moving plate, the positions and number of the plurality of moving rods being opposite to the moving frame, and the relative moving rods and the moving frame being fixedly connected.

[0006] Preferably, the rotating assembly includes a rotating cavity within the movable frame, one end of the rotating shaft extends into the rotating cavity and is rotatably connected to the rotating cavity, a gear is fixedly connected to the rotating shaft, two adjacent gears on the same side mesh with each other, one of the upper rotating shafts and the corresponding lower rotating shaft are connected by a pulley assembly, a reciprocating motor is fixedly connected within the rotating cavity, and one of the rotating shafts is fixedly connected to the output end of the reciprocating motor.

[0007] Preferably, a control component is installed inside the movable frame. The control component includes a movable cavity opened inside the movable frame. The movable cavity and a rotating cavity are located on opposite sides of the movable frame. A hydraulic cylinder is fixedly connected inside the movable cavity. A connecting rod is fixedly connected to the output end of the hydraulic cylinder. The connecting rod passes through the movable cavity. A control frame is fixedly connected to the end of the connecting rod away from the hydraulic cylinder. A control ring is rotatably sleeved on the outside of the flushing pipe. A control rod is fixedly connected to the outside of the control ring. The control rod and the control frame abut against each other.

[0008] Preferably, a stirring assembly is installed on the outside of the flushing pipe. The stirring assembly includes a control plate fixedly installed on the outside of the control ring. A slide rod is slidably connected to the outside of the control plate. A slide plate is fixedly connected to the lower side of the slide rod. A spring is fixedly connected between the slide plate and the control plate. A plug rod is fixedly connected to the lower side of the slide plate.

[0009] Preferably, the anaerobic assembly includes an air inlet pipe fixedly penetrating the side wall of the pool, multiple air exchange pipes fixedly connected inside the pool and interconnected with each other, the air inlet pipe communicating with one of the air exchange pipes, and an air exchange nozzle fixedly connected to the upper side of the air exchange pipe.

[0010] Preferably, the bolt assembly includes a plurality of threaded rods extending through the fixed frame, and a plurality of threaded holes are provided in the pool body. The position and number of the threaded holes are opposite to the threaded rods, and the threaded rods and threaded holes are threadedly connected to each other.

[0011] The beneficial effects of this invention are: 1. Firstly, during the wastewater treatment process, the flushing pipes and flushing heads flush away excess biofilm debris on the outside of the packing plate. The entire process is automatic, and compared to removing excess biofilm by adjusting the pump, it eliminates the need for downtime replacement, ensuring filtration quality without affecting overall filtration efficiency. Since most of the device is located on the water surface, the corrosion effect on the device is minimal, allowing for long-term use. Furthermore, the flushing method using flushing pipes and flushing heads requires less power and achieves backwashing unlike that achieved by a pump. This method provides almost continuous, very gentle hydraulic flushing, similar to a "light breeze and drizzle," continuously carrying away naturally aged and detached biofilm fragments, thereby stabilizing the biofilm at a dynamically balanced ideal thickness. This achieves "protection" rather than "destruction followed by recovery," perfectly aligning with the core of ideal biofilm control: immediate, precise, and minimally invasive management. 2. Secondly, during the flushing process, the hydraulic cylinder can be activated and the position of the flushing head adjusted by observing the clarity of the water discharged from the drain pipe, so that the biofilm is always in good working condition. 3. Then, during the flushing process using the flushing head, the back-and-forth movement of the insert rod can stir the water source near the biofilm, increase the shear force of the water near the biofilm, and better flush the biofilm. 4. Finally, during the flushing process using the flushing head, the rotating flushing tube drives the flushing head to rotate synchronously, which can reduce the possibility of biofilm clogging the flushing head and allow the flushing head to continue flushing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 2 This is a schematic diagram of the fixed frame structure in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 3 This is a schematic diagram of the ventilation pipe in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 4 This is a schematic diagram of the packing plate in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 5 This is a schematic diagram of the fixed frame and gantry plate in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 6 This is a schematic diagram of the moving frame in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 7This is a cross-sectional view of the moving frame connection in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 8 This is a cross-sectional view of the movable frame from another angle in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention. Figure 9 This is a schematic diagram showing the connection of the rotating shaft, rotating cylinder, and control frame in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention. Figure 10 This is a schematic diagram of the rotating shaft and rotating cylinder in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 11 This is a schematic diagram of the rotating cylinder and flushing pipe in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 12 This is a cross-sectional view of the rotating cylinder connection in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 13 This is a schematic diagram of the chute structure in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention; Figure 14 This diagram illustrates the motion state of the flushing pipe in a self-circulating anaerobic ammonia oxidation biological wastewater treatment device proposed in this invention.

[0013] In the diagram: 1. Pool body, 2. Fixed frame, 3. Threaded mounting rod, 4. Packing plate, 5. Threaded mounting hole, 6. Drain pipe, 7. Air inlet pipe, 8. Air exchange pipe, 9. Air exchange nozzle, 10. Gantry plate, 11. Moving plate, 12. Moving frame, 13. Fixed motor, 14. Reciprocating screw, 15. Reciprocating threaded sleeve, 16. Moving rod, 17. Moving cavity, 18. Hydraulic cylinder, 19. Rotating cavity, 20. Rotating cylinder, 21. Rotating shaft, 22. Brush head, 23. Reciprocating motor, 24. Gear, 25. Pulley assembly, 26. Brush pipe, 27. Control frame, 28. Connecting rod, 29. Control rod, 30. Control ring, 31. Control board, 32. Slide rod, 33. Spring, 34. Slide plate, 35. Insert rod, 36. Slide groove, 37. Slider. Detailed Implementation

[0014] See Figures 1-14 A self-circulating anaerobic ammonia oxidation biological wastewater treatment device includes a tank body 1. A drain pipe 6 is fixedly connected to the side wall of the tank body 1. An anaerobic assembly is fixedly installed inside the tank body 1. The anaerobic assembly includes an air inlet pipe 7 fixedly connected to the side wall of the tank body 1. Multiple air exchange pipes 8 are fixedly connected inside the tank body 1 and are interconnected. The air inlet pipe 7 is connected to one of the air exchange pipes 8. An air exchange nozzle 9 is fixedly connected to the upper side of the air exchange pipe 8. A fixing frame 2 is installed inside the pool body 1 by means of a bolt assembly. The bolt assembly includes multiple threaded rods 3 that pass through the fixing frame 2. Multiple threaded holes 5 are opened inside the pool body 1. The position and number of the threaded holes 5 are opposite to the threaded rods 3, and the threaded rods 3 and threaded holes 5 are threadedly connected. Multiple packing plates 4 are fixedly connected inside the fixing frame 2. First, a pump body is fixedly installed on the outside of the tank body 1. The air inlet pipe 7 is fixedly connected to the output end of the pump body. Before the self-circulating anaerobic ammonia oxidation biological wastewater treatment operation, the fixing frame 2 is placed inside the tank body 1, and then the installation threaded rod 3 is screwed into the installation threaded hole 5 to complete the installation and fixing operation of the fixing frame 2. Nitrified sludge and other materials are poured onto the packing plate 4 to provide a growth basis for functional bacteria. Intermittent air exchange is performed on the tank body 1 through the pump body. Nitrogen gas moves upward from the bottom of the tank body 1 through the air inlet pipe 7-air exchange pipe 8-air exchange nozzle 9, reducing... The oxygen content inside pool 1 is reduced, putting pool 1 into a completely anaerobic state, creating a production environment, inhibiting the production of nitrifying bacteria, thereby enriching the slow-growing anaerobic ammonia-oxidizing bacteria, maintaining the gas flow rate for a period of time (15-30 minutes) to ensure that the air is completely replaced. After stable operation, the system can achieve self-circulation. Nitrifying bacteria provide nitrite, and nitrifying bacteria and anaerobic ammonia-oxidizing bacteria consume nitrite and ammonia nitrogen. The two coexist. Sewage is then introduced into pool 1 for filtration. The filtered clean water is discharged through drain pipe 6, finally completing the sewage treatment operation. The absorption assembly includes a movable frame 12 slidably sleeved on the outside of the packing plate 4. Multiple rotating shafts 21 are rotatably connected to the movable frame 12, and these shafts 21 are symmetrically arranged on the upper and lower sides of the packing plate 4. A rotating cylinder 20 is fixedly connected to each rotating shaft 21. A flushing pipe 26 is sleeved on the rotating cylinder 20. A sliding groove 36 is formed inside the rotating cylinder 20, and a slider 37 is slidably connected within the groove 36. The slider 37 is fixedly connected to the flushing pipe 26, and a flushing head 22 is fixedly connected to the flushing pipe 26. A rotating assembly for controlling the rotation of the rotating shafts 21 is fixedly installed inside the movable frame 12. The pool body 1 is also fixedly installed with a moving component for controlling the movement of the moving frame 12. The moving component includes a gantry plate 10 fixedly installed on the upper side of the pool body 1. A fixed motor 13 is fixedly connected to the gantry plate 10. A reciprocating screw 14 is fixedly connected to the output end of the fixed motor 13. A reciprocating sleeve 15 is matched and sleeved on the reciprocating screw 14. The reciprocating sleeve 15 is fixedly connected to the moving plate 11 through a connecting rod. The connecting rod and the gantry plate 10 are slidably connected. A plurality of moving rods 16 are fixedly connected to the moving plate 11. The position and number of the plurality of moving rods 16 are opposite to the moving frame 12, and the relative moving rods 16 and the moving frame 12 are fixedly connected. During wastewater treatment, the biofilm provides a protective "home" for the slow-growing anaerobic ammonia-oxidizing bacteria, making them less susceptible to being washed away by the water flow. This is the foundation for achieving "self-circulation" and system stability. The biofilm grows on the surface of the packing plate 4. The microorganisms inside the biofilm will die naturally, causing the outer biofilm to periodically detach under the action of hydraulic shear force. This is a natural dynamic equilibrium process. However, as time goes by, the rate of biofilm detachment is relatively slow, so it needs to be controlled artificially. A flushing pump is also fixedly installed on the outside of the pool body 1. The flushing pipe 26 is fixedly connected to the output end of the flushing pump. The flushing pump can provide power to flush away the detached biofilm tissue, which can effectively reduce the occurrence of excessive biofilm thickness. During wastewater treatment, the fixed motor 13 is started, which drives the reciprocating screw 14 to rotate. Since the connecting rod and the gantry plate 10 are slidably connected, the rotating reciprocating screw 14 will drive the reciprocating sleeve 15 and the moving plate 11 to move back and forth relative to the gantry plate 10. The moving plate 11 drives the moving frame 12 to move back and forth through the moving rod 16. The moving frame 12 drives the internal rotating shaft 21, flushing pipe 26 and flushing head 22 to move back and forth, which can flush away the excess biofilm tissue sloughed off from the outside of the packing plate 4. Meanwhile, most of the structures, including the fixed motor 13, reciprocating screw 14, gantry plate 10, and flushing pipe 26, are located on the outside of the tank body 1. The entire operation is automatic. Compared with removing excess biofilm by adjusting the pump body, it does not require shutdown for replacement, ensuring filtration quality without affecting the overall filtration efficiency. Since most of the device is located on the water surface, the corrosion effect on the device is small, allowing for long-term use. Furthermore, the flushing is performed using the flushing pipe 26 and flushing head 22, requiring less power. This method achieves backwashing that is different from that achieved by the pump body. This method provides very gentle water flushing almost continuously, similar to a "light breeze and drizzle," continuously carrying away naturally aged and detached biofilm fragments, thereby stabilizing the biofilm at a dynamically balanced ideal thickness. This achieves "protection" rather than "destruction followed by recovery," perfectly matching the core of ideal biofilm control: immediate, precise, and minimally invasive management. The rotating assembly includes a rotating cavity 19 within the movable frame 12. One end of a rotating shaft 21 extends into and is rotatably connected to the rotating cavity 19. A gear 24 is fixedly connected to the rotating shaft 21, with two adjacent gears 24 on the same side meshing. One of the upper rotating shafts 21 and the corresponding lower rotating shaft 21 are connected via a pulley assembly 25. A reciprocating motor 23 is fixedly connected within the rotating cavity 19, and one of the rotating shafts 21 is fixedly connected to the output end of the reciprocating motor 23. During the flushing process using the flushing head 22, the reciprocating motor 23 is started. The reciprocating motor 23 is a servo motor in real life. The working frequency of the servo motor can be set to adjust the output power and rotation speed of the servo motor. When the reciprocating motor 23 is started, it can drive the rotating shaft 21 to rotate back and forth. Under the transmission action of the gear 24 and the pulley assembly 25, all the rotating shafts 21 are driven to rotate back and forth. The rotating shafts 21 drive the rotating cylinder 20 to swing back and forth. The rotating cylinder 20 drives the flushing pipe 26 and the flushing head 22 to rotate back and forth, forming an oscillation, which expands the working range of the flushing head 22 and makes the spraying range of the flushing head 22 more even. That is, the flushing of the biofilm is not concentrated in one place, but all-round, and the flushing effect is better.

[0015] A control component is installed inside the movable frame 12. The control component includes a movable cavity 17 opened inside the movable frame 12. The movable cavity 17 and the rotating cavity 19 are located on both sides of the movable frame 12, respectively. A hydraulic cylinder 18 is fixedly connected inside the movable cavity 17. A connecting rod 28 is fixedly connected to the output end of the hydraulic cylinder 18. The connecting rod 28 passes through the movable cavity 17. A control frame 27 is fixedly connected to the end of the connecting rod 28 away from the hydraulic cylinder 18. A control ring 30 is rotatably sleeved on the outside of the flushing pipe 26. A control rod 29 is fixedly connected to the outside of the control ring 30. One end of the control rod 29 extends into the control frame 27 and abuts against the control frame 27. During the wastewater filtration process, the user can observe the clarity of the water discharged from drain pipe 6. If the water is relatively clear, the hydraulic cylinder 18 can be activated. The hydraulic cylinder 18, through the connecting rod 28, drives the control frame 27 to move away from the packing plate 4, i.e., to... Figure 9 From the perspective of the control frame 27, the upper control frame 27 moves upward and the lower control frame 27 moves downward. The control frame 27 drives the control ring 30 to move via the control rod 29. The control ring 30 drives the flushing pipe 26 and the flushing head 22 to move. The gap between the flushing head 22 and the packing plate 4 increases, making the biofilm thicker and better able to treat the wastewater. If the water is turbid, the hydraulic cylinder 18 can be activated, and the control frame 27 can be moved closer to the packing plate 4 via the connecting rod 28. This reduces the gap between the flushing head 22 and the packing plate 4, allowing for better flushing of the biofilm and reducing the biofilm thickness, thus achieving real-time control.

[0016] An agitation assembly is installed on the outside of the flushing pipe 26. The agitation assembly includes a control plate 31 fixedly installed on the outside of the control ring 30. A slide rod 32 is slidably connected to the outside of the control plate 31. A slide plate 34 is fixedly connected to the lower side of the slide rod 32. A spring 33 is fixedly connected between the slide plate 34 and the control plate 31. A plug rod 35 is fixedly connected to the lower side of the slide plate 34. During the oscillation of the flushing pipe 26 and the flushing head 22, under the constraint of the control frame 27, the control lever 29, and the control ring 30, although the flushing pipe 26 and the flushing head 22 oscillate with the rotating shaft 21, the horizontal position of the flushing head 22 does not change when the control frame 27 does not move. That is, during the oscillation of the flushing pipe 26 and the flushing head 22, refer to the attached... Figure 14 The distance between the rotating shaft 21 and the control frame 27 remains constant, always being A. During the rotation of the rotating shaft 21, the distance between the control rod 29 and the rotating shaft 21 is minimized, and remains A, only when the flushing pipe 26 and the control frame 27 are perpendicular. Figure 14 The state on the left side of the middle, As the flushing pipe 26 continues to rotate, for example, if the flushing pipe 26 rotates clockwise, it achieves the following: Figure 14 When in the right-hand state, the distance between the control lever 29 and the rotating shaft 21 increases to B, where B > A, until the reciprocating motor 23 starts to reverse. The entire device repeats the above movement, eventually causing the control lever 29 and the flushing head 22 to move back and forth relative to the control frame 27. When the distance between the flushing head 22 and the rotating cylinder 20 decreases, i.e., from B to A, the sliding rod 32 and the rotating cylinder 20 abut against each other. The sliding rod 32 will drive the sliding plate 34 and the insert rod 35 to move relative to the flushing head 22. During the flushing process using the flushing head 22, the back-and-forth movement of the insert rod 35 can stir the water source near the biofilm, increase the shear force of the water near the biofilm, and better flush the biofilm. Furthermore, since the movement trajectory of the insert rod 35 is compound, that is, the insert rod 35 moves with the flushing head 22 while also moving relative to the flushing head 22, it further improves the flushing of the biofilm.

[0017] The rotating cylinder 20 has a sliding groove 36, and a slider 37 is slidably connected in the sliding groove 36. The slider 37 is fixedly connected to the flushing pipe 26. When the flushing head 22 is displaced relative to the rotating cylinder 20, the slider 37 moves within the groove 36. Due to the special structure of the groove 36, which consists of two parts—a vertical part and a threaded part—when the slider 32 is in the vertical part, the flushing pipe 26 and the rotating cylinder 20 are slidably connected vertically. When the flushing pipe 26 is in the threaded part, the flushing pipe 26 and the rotating cylinder 20 are threadedly connected. At this time, when the flushing pipe 26 moves relative to the rotating cylinder 20, it will cause the flushing pipe 26 to rotate. The rotating flushing pipe 26 will cause the flushing head 22 to rotate synchronously, which can reduce the possibility of biofilm clogging the flushing head 22 and allow the flushing head 22 to continuously flush.

[0018] In this invention, before the self-circulating anaerobic ammonia oxidation biological wastewater treatment operation, the fixing frame 2 is placed inside the tank 1, and then the installation threaded rod 3 is screwed into the installation threaded hole 5. Nitrified sludge and other materials are poured onto the packing plate 4. The tank 1 is intermittently aerated by the pump. Nitrogen gas moves upward from the bottom of the tank 1 through the air inlet pipe 7-air exchange pipe 8-air exchange nozzle 9, inhibiting the production of nitrifying bacteria, thereby enriching the slow-growing anaerobic ammonia oxidizing bacteria. After stable operation, the system can achieve self-circulation. Nitrifying bacteria provide nitrite, and nitrifying bacteria and anaerobic ammonia oxidizing bacteria consume nitrite and ammonia nitrogen. The two coexist. Wastewater is then introduced into the tank 1 for filtration. The filtered clean water is discharged through the drain pipe 6, and the wastewater treatment operation is finally completed. During wastewater treatment, the fixed motor 13 is started, which drives the reciprocating screw 14 to rotate. The reciprocating screw 14 drives the reciprocating sleeve 15 and the moving plate 11 to move back and forth relative to the gantry plate 10. The moving plate 11 drives the moving frame 12 to move back and forth via the moving rod 16. The moving frame 12 drives the internal rotating shaft 21, flushing pipe 26 and flushing head 22 to move back and forth, which can flush away the excess biofilm tissue sloughed off from the outer side of the packing plate 4. During the flushing process using the flushing head 22, the reciprocating motor 23 is started, which drives the rotating shaft 21 to rotate back and forth. Under the transmission action of the gear 24 and the pulley assembly 25, all the rotating shafts 21 are driven to rotate back and forth. The rotating shafts 21 drive the rotating cylinder 20 to swing back and forth. The rotating cylinder 20 drives the flushing pipe 26 and the flushing head 22 to rotate back and forth to form an oscillation, thereby expanding the working range of the flushing head 22. During the wastewater filtration process, the user can observe the clarity of the water discharged from the drain pipe 6. If the water is relatively clear, the hydraulic cylinder 18 can be activated. The hydraulic cylinder 18 drives the control frame 27 to move away from the packing plate 4 via the connecting rod 28. The control frame 27 drives the control ring 30 to move via the control rod 29. The control ring 30 drives the flushing pipe 26 and the flushing head 22 to move. The gap between the flushing head 22 and the packing plate 4 increases, making the biofilm thicker and better able to treat the wastewater. If the water is relatively turbid, the hydraulic cylinder 18 can be activated, and the control frame 27 can be moved closer to the packing plate 4 via the connecting rod 28. This reduces the gap between the flushing head 22 and the packing plate 4, allowing for better flushing of the biofilm and reducing the biofilm thickness, thus achieving real-time control. During the oscillation of the flushing pipe 26 and the flushing head 22, under the constraint of the control frame 27, the control lever 29, and the control ring 30, although the flushing pipe 26 and the flushing head 22 oscillate with the rotating shaft 21, the horizontal position of the flushing head 22 does not change when the control frame 27 is not moving. That is, during the oscillation of the flushing pipe 26 and the flushing head 22, for example, when the flushing pipe 26 rotates clockwise, the distance between the control lever 29 and the rotating shaft 21 increases until the reciprocating motor 23 starts to reverse. The entire device repeats the above movement, eventually causing the control lever 29 and the flushing head 22 to move relative to the control frame 27. 7. Moving back and forth, when the distance between the flushing head 22 and the rotating cylinder 20 decreases, the slide rod 32 and the rotating cylinder 20 abut against each other. The slide rod 32 will drive the slide plate 34 and the insert rod 35 to move relative to the flushing head 22. During the flushing process using the flushing head 22, the back-and-forth moving insert rod 35 can stir the water source near the biofilm, increase the shear force of the water near the biofilm, and better flush the biofilm. In addition, since the movement trajectory of the insert rod 35 is compound, that is, the insert rod 35 moves with the flushing head 22 while also moving relative to the flushing head 22, it further improves the flushing of the biofilm. When the flushing head 22 is displaced relative to the rotating cylinder 20, the slider 37 moves within the groove 36, which causes the flushing pipe 26 to rotate. The rotating flushing pipe 26 drives the flushing head 22 to rotate synchronously, which can reduce the possibility of biofilm clogging the flushing head 22 and allow the flushing head 22 to continue flushing.

Claims

1. A self-circulating anaerobic ammonia oxidation biological wastewater treatment device, comprising a tank (1), characterized in that, The pool body (1) is fixedly connected to a drain pipe (6). An anaerobic assembly is fixedly installed in the pool body (1). A fixed frame (2) is installed in the pool body (1) by bolt assembly. Multiple packing plates (4) are fixedly connected to the fixed frame (2). An absorption assembly is fixedly installed in the pool body (1). The absorption assembly includes a movable frame (12) that is slidably sleeved on the outside of the packing plate (4). Multiple rotating shafts (21) are rotatably connected to the movable frame (12). The multiple rotating shafts (21) are symmetrically arranged on the upper and lower sides of the packing plate (4). A rotating cylinder (20) is fixedly connected to the rotating shaft (21). A flushing pipe (26) is sleeved on the rotating cylinder (20). A sliding groove (36) is opened in the rotating cylinder (20). A slider (37) is slidably connected in the sliding groove (36). The slider (37) and the flushing pipe (26) are fixedly connected. A flushing head (22) is fixedly connected to the moving frame (12). A rotating component for controlling the rotation of the rotating shaft (21) is fixedly installed inside the moving frame (12). A moving component for controlling the movement of the moving frame (12) is also fixedly installed inside the pool body (1). A control component is installed inside the moving frame (12). The control component includes a moving cavity (17) opened inside the moving frame (12). A hydraulic cylinder (18) is fixedly connected inside the moving cavity (17). A connecting rod (28) is fixedly connected to the output end of the hydraulic cylinder (18). The connecting rod (28) passes through the moving cavity (17). A control frame (27) is fixedly connected to the end of the connecting rod (28) away from the hydraulic cylinder (18). A control ring (30) is rotatably sleeved on the outside of the flushing pipe (26). A control rod (29) is fixedly connected to the outside of the control ring (30). The control rod (29) and the control frame (27) abut against each other.

2. The self-circulating anaerobic ammonia oxidation biological wastewater treatment equipment according to claim 1, characterized in that, The moving component includes a gantry plate (10) fixedly installed on the upper side of the pool body (1). The gantry plate (10) is fixedly connected to a fixed motor (13). The output end of the fixed motor (13) is fixedly connected to a reciprocating screw (14). The reciprocating screw (14) is fitted with a reciprocating sleeve (15). The reciprocating sleeve (15) is fixedly connected to a moving plate (11) via a connecting rod. The connecting rod and the gantry plate (10) are slidably connected. The moving plate (11) is fixedly connected to a plurality of moving rods (16). The position and number of the plurality of moving rods (16) are opposite to the moving frame (12), and the relative moving rods (16) and the moving frame (12) are fixedly connected.

3. The self-circulating anaerobic ammonia oxidation biological wastewater treatment equipment according to claim 1, characterized in that, The rotating assembly includes a rotating cavity (19) opened in the moving frame (12). The moving cavity (17) and the rotating cavity (19) are located on both sides of the moving frame (12). One end of the rotating shaft (21) extends into the rotating cavity (19) and is rotatably connected to the rotating cavity (19). The rotating shaft (21) is fixedly connected to a gear (24). Two adjacent gears (24) on the same side mesh with each other. One of the rotating shafts (21) on the upper side and the corresponding rotating shaft (21) on the lower side are connected by a belt pulley assembly (25). A reciprocating motor (23) is fixedly connected in the rotating cavity (19). One of the rotating shafts (21) is fixedly connected to the output end of the reciprocating motor (23).

4. The self-circulating anaerobic ammonia oxidation biological wastewater treatment equipment according to claim 1, characterized in that, A stirring assembly is installed on the outside of the flushing pipe (26). The stirring assembly includes a control plate (31) fixedly installed on the outside of the control ring (30). A slide rod (32) is slidably connected to the outside of the control plate (31). A slide plate (34) is fixedly connected to the lower side of the slide rod (32). A spring (33) is fixedly connected between the slide plate (34) and the control plate (31). A plug rod (35) is fixedly connected to the lower side of the slide plate (34).

5. The self-circulating anaerobic ammonia oxidation biological wastewater treatment equipment according to claim 1, characterized in that, The anaerobic assembly includes an air inlet pipe (7) fixedly penetrating the side wall of the pool body (1). Multiple air exchange pipes (8) are fixedly connected inside the pool body (1), and the multiple air exchange pipes (8) are interconnected. The air inlet pipe (7) is connected to one of the air exchange pipes (8), and an air exchange nozzle (9) is fixedly connected to the upper side of the air exchange pipe (8).

6. The self-circulating anaerobic ammonia oxidation biological wastewater treatment equipment according to claim 1, characterized in that, The bolt assembly includes multiple threaded rods (3) that pass through the fixed frame (2), and multiple threaded holes (5) are opened in the pool body (1). The position and number of the threaded holes (5) are opposite to the threaded rods (3), and the threaded rods (3) and threaded holes (5) are threadedly connected.

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