AAO process-based dosing automatic adjusting and sufficient flow pushing device

Abstract

The invention discloses an AAO (anaerobic-anoxic-oxic) process-based dosing automatic adjusting and sufficient flow pushing device, and belongs to the technical field of sewage treatment. Comprising a sewage pretreatment tank and a biochemical tank, wherein the biochemical tank is sequentially divided into a disinfection tank, an anaerobic tank, an anoxic tank and an aerobic tank; a water passing port is fixedly communicated between the bottom of the disinfection tank and the anaerobic tank, the sewage pretreatment tank is fixedly communicated with the biochemical tank, the right side of the aerobic tank is fixedly communicated with a sewage pipe, the right end of the sewage pipe is fixedly communicated with a sedimentation tank, the lower part of the sedimentation tank is provided with a sludge discharge pipe, and the sludge discharge pipe is provided with a sludge discharge port. The right side of the sedimentation tank fixedly communicates with a drainage pipe; according to the improved AAO sewage treatment system, through the ingenious structural design, the linkage of the medicament feeding amount and the water level of the disinfection tank is realized. When the water level of the disinfection tank changes, the floating plate drives the top plate to act on the perforated rotating plate, so that the medicament outflow of the medicament storage cavity is controlled. According to the design, the defect of extensive operation in the field of town sewage treatment is overcome, waste of medicine consumption and energy consumption is avoided, meanwhile, the dosage of the disinfectant can be effectively ensured, effective elimination of bacterial viruses is ensured, and the spreading risk of infectious viruses is reduced.

Description

Technical Field

[0001] The invention relates to sewage treatment technology, and in particular to an automatic dosing adjustment and sufficient flow pushing device based on an AAO process. Background Art

[0002] Against the backdrop of the booming development of modern industry, the scale of industrial production continues to expand and its types become increasingly diversified. From chemical industry, textile, printing and dyeing to mechanical processing, electronic manufacturing and many other fields, the industrial production process has produced a large amount of wastewater with complex components and high pollution levels. In the chemical industry, various chemical reactions produce wastewater containing a large amount of heavy metal ions and organic poisons (such as benzene, phenols, etc.). These substances are highly toxic and difficult to degrade naturally. The wastewater from the textile printing and dyeing industry is rich in dyes, auxiliaries, etc., with high chroma and chemical oxygen demand (COD). Its discharge causes serious visual pollution and ecological damage to the water environment. With the acceleration of urbanization and the rapid development of industry, the amount of sewage discharged is increasing, and the requirements for sewage treatment technology are also getting higher and higher. Traditional sewage treatment processes have gradually exposed some shortcomings in practical applications;

[0003] For example, the dosage of chemicals is not accurate enough, which often leads to waste of chemicals and energy, and it is difficult to ensure the effective disinfecting of bacteria and viruses, and there is a risk of infectious virus transmission. At the same time, in various links of sewage treatment, such as anaerobic tanks, anoxic tanks and aerobic tanks, there are unsatisfactory stirring, flow and aeration effects, which affects the efficiency of microbial decomposition and treatment of pollutants. In this context, it is particularly necessary to develop an improved sewage treatment system. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide an efficient and stable sewage treatment solution to cope with the increasingly complex sewage composition and strict environmental emission standards; another purpose of the present invention is to provide an optimized sewage biochemical treatment environment to improve the treatment efficiency of each treatment pool.

[0005] Technical solution: The automatic adjustment and sufficient flow-pushing device of dosing based on the AAO process includes a sewage pretreatment tank and a biochemical tank. The biochemical tank is divided into a disinfection tank, an anaerobic tank, an anoxic tank and an aerobic tank in sequence. A water outlet is fixedly connected between the bottom of the disinfection tank and the anaerobic tank. The sewage pretreatment tank is fixedly connected to the biochemical tank. The right side of the aerobic tank is fixedly connected to a sewage pipe. The right end of the sewage pipe is fixedly connected to a sedimentation tank. A mud discharge pipe is arranged at the bottom of the sedimentation tank. The right side of the sedimentation tank is fixedly connected to a drainage pipe. The right end of the drainage pipe is fixedly connected to a denitrification deep bed filter. The upper surface of the biochemical tank is fixedly connected to the drainage pipe. A medicine storage chamber is fixedly connected to the left side of the surface, and a rotating column is rotatably connected to the inside of the medicine storage chamber. The outer wall of the rotating column is rotatably connected to a rotating plate with a hole, and the outer wall of the rotating plate with a hole is symmetrically provided with elastic grooves, and sliders are slidably connected to the inside of the elastic grooves, and baffles are fixedly connected to the opposite sides of the sliders, and the opposite ends of the baffles are rotatably connected to abutment blocks through rotating blocks, and springs are fixedly connected between the opposite sides of the sliders and the adjacent elastic grooves, and a floating plate is slidably connected to the inner left side of the disinfection tank, and a top plate is fixedly connected to the upper surface of the floating plate, and the top of the top plate is in contact with the lower surface of the rotating plate with holes.

[0006] Furthermore, a rotating chamber is fixedly connected to the left side of the upper surface of the biochemical pool, located on the right side of the medicine storage chamber, and a motor is fixedly connected to the interior of the rotating chamber, and a rotating rod is fixedly connected to the bottom end of the output end of the motor, and the bottom end of the rotating rod extends to the interior of the anaerobic tank, and the interior of the anaerobic tank is fixedly connected to a vertical cylinder with holes through a cross bar, and a guide groove is provided on the outer wall of the vertical cylinder with holes. The bottom end of the rotating rod extends to the bottom of the anaerobic tank through the vertical cylinder with holes and is fixedly connected to a turntable, and the outer wall of the turntable is rotatably connected to a mixing drum, and a plurality of mixing blades are symmetrically fixedly connected to the outer wall of the mixing drum, and a connecting frame is symmetrically fixedly connected to the outer wall of the mixing drum, and the top of the connecting frame is fixedly connected to guide blocks, and the guide blocks are slidably connected to the guide grooves.

[0007] Furthermore, the outer side wall of the turntable is fixedly connected to a limit block, the inner side wall of the mixing drum is provided with a limit sliding groove, and the limit sliding groove is slidably connected to the limit block.

[0008] Furthermore, a telescopic cavity is fixedly connected to the front surface of the biochemical pool, a vertical plate is slidably connected to the interior of the telescopic cavity, a telescopic long plate is fixedly connected to the front surface of the vertical plate, the front end of the telescopic long plate penetrates into the interior of the anoxic pool, and a flow promoter is fixedly connected to the right side of the telescopic long plate located inside the anoxic pool.

[0009] Furthermore, an air squeezing chamber is fixedly connected to the upper surface of the rotating chamber, the top of the output end of the motor penetrates into the interior of the air squeezing chamber and is fixedly connected to a cam, a long air squeezing plate is slidably connected to the right side of the interior of the air squeezing chamber, a plurality of springs are fixedly connected between the long air squeezing plate and the air squeezing chamber, and an air outlet pipe is fixedly connected between the air squeezing chamber and the telescopic chamber.

[0010] Furthermore, a medicine adding opening is provided on the upper surface of the medicine storage cavity, and an upper cover is snap-fittedly connected inside the medicine adding opening.

[0011] Furthermore, an aerator is fixedly connected to the inner lower surface of the aerobic tank.

[0012] Furthermore, a torsion spring is wound around the outer wall of the rotating column, the front end of the torsion spring is fixedly connected to the inner wall of the rotating plate with holes, the rear end of the torsion spring is fixedly connected to the outer wall of the rotating column, and a float is fixedly connected to the lower surface of the floating plate.

[0013] Furthermore, a mud pump is fixedly connected to the front of the biochemical pool, the input end of the mud pump is fixedly connected to the outer wall of the mud discharge pipe, the output end of the mud pump passes through the interior of the anaerobic pool, the input end of the liquid pump in front of the biochemical pool is fixedly connected to the aerobic pool, and the left end of the output end of the liquid pump is fixedly connected to the anoxic pool.

[0014] Beneficial effects:

[0015] When the water level in the disinfection pool changes, the floating plate drives the top plate to act on the rotating plate with holes, thereby controlling the outflow of the medicine from the medicine storage chamber. This design overcomes the defects of extensive operation in the field of urban sewage treatment and avoids the waste of medicine consumption and energy. At the same time, it can effectively guarantee the dosage of disinfectant, ensure the effective elimination of bacteria and viruses, and reduce the risk of transmission of infectious viruses. Under the premise of ensuring the treatment effect, the rational use of chemicals improves the resource utilization efficiency and safety of the entire sewage treatment system, which is of great significance for long-term stable operation of sewage treatment that meets environmental protection requirements;

[0016] The motor drives the rotating rod to drive the turntable, mixing drum and mixing blades to rotate. With the cooperation of the guide block and guide groove, the limit block and limit slide groove, the mixing drum rotates stably, which improves the efficiency of the anaerobic reaction. In the anoxic tank, the operation of the motor drives the cam to squeeze the long air-extrusion plate, and the air is supplied to the telescopic cavity through the air outlet pipe to push the vertical plate, so that the telescopic long plate and the flow pusher can adjust their positions as needed, thereby enhancing the flow of water and the contact between sewage and microorganisms. These designs make the treatment process in the anaerobic tank and the anoxic tank more efficient and stable, and can give full play to the role of different microorganisms in their respective environments, improve the ability of the entire sewage treatment system to remove pollutants, and ensure the quality of sewage treatment;

[0017] The aerator in the aerobic pool continuously fills the sewage with air, increasing the amount of dissolved oxygen in the form of tiny bubbles, providing a good metabolic environment for aerobic microorganisms, which is conducive to the decomposition of organic pollutants and improving the treatment efficiency of the aerobic pool. The float under the floating plate increases the buoyancy of the floating plate in the disinfection pool, allowing it to float more sensitively and stably with the water level. This design ensures the accuracy of the correlation between the dosage of the agent and the change of the water level, and indirectly optimizes the sewage treatment process. Overall, these designs optimize the operating effects of the key links of the system, ensure the efficient and stable operation of the sewage treatment system, and better achieve sewage purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional view of the biochemical pool of the present invention;

[0020] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 The present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0022] Figure 5 It is a schematic diagram of the overall structure of the internal device of the anaerobic tank of the present invention;

[0023] Figure 6 It is a schematic cross-sectional structural diagram of the telescopic cavity of the present invention.

[0024] In the figure: 1, sewage pretreatment tank; 2, disinfection tank; 3, anaerobic tank; 4, anoxic tank; 5, aerobic tank; 6, water inlet; 7, sewage pipe; 8, sedimentation tank; 9, mud pipe; 10, drainage pipe; 11, denitrification deep bed filter; 12, medicine storage chamber; 13, rotating column; 14, rotating plate with holes; 15, spring groove; 16, slider; 17, baffle; 18, block; 19, spring 1; 20, floating plate; 21, top plate; 22, rotating chamber; 23, motor; 24, rotating rod; 25, vertical plate with holes Cylinder; 26. Guide groove; 27. Mixing cylinder; 28. Mixing blade; 29. ​​Connecting frame; 30. Guide block; 31. Limit block; 32. Limit slide; 33. Telescopic cavity; 34. Vertical plate; 35. Telescopic long plate; 36. Flow pusher; 37. Air squeezing cavity; 38. Air squeezing long plate; 39. Spring 2; 40. Air outlet pipe; 41. Drug adding port; 42. Upper cover; 43. Aerator; 44. Turntable; 45. Cam; 46. Torsion spring; 47. Float; 48. Mud pump; 49. Liquid pump. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figure 1-6 As shown, an automatic dosing adjustment and sufficient flow pushing device based on the AAO process is provided, including a sewage pretreatment tank 1 and a biochemical tank, the biochemical tank is divided into a disinfection tank 2, an anaerobic tank 3, an anoxic tank 4 and an aerobic tank 5 in sequence; a water inlet 6 is fixedly connected between the bottom of the disinfection tank 2 and the anaerobic tank 3, the sewage pretreatment tank 1 is fixedly connected to the biochemical tank, a sewage pipe 7 is fixedly connected to the right side of the aerobic tank 5, a sedimentation tank 8 is fixedly connected to the right end of the sewage pipe 7, a mud discharge pipe 9 is arranged at the lower part of the sedimentation tank 8, a drainage pipe 10 is fixedly connected to the right side of the sedimentation tank 8, a denitrification deep bed filter 11 is fixedly connected to the right end of the drainage pipe 10, a drug storage chamber 12 is fixedly connected to the left side of the upper surface of the biochemical tank, a rotating column 13 is rotatably connected to the inside of the drug storage chamber 12, and the outer wall of the rotating column 13 A rotating plate 14 with holes is rotatably connected, and the outer side wall of the rotating plate 14 with holes is symmetrically provided with spring grooves 15. Slide blocks 16 are slidably connected inside the spring grooves 15. The opposite sides of the slide blocks 16 are fixedly connected with baffles 17. The opposite ends of the baffles 17 are rotatably connected with abutment blocks 18 through rotating blocks. The opposite sides of the slide blocks 16 are fixedly connected with springs 19 between the adjacent spring grooves 15. A floating plate 20 is slidably connected to the left side of the interior of the disinfection tank 2. A top plate 21 is fixedly connected to the upper surface of the floating plate 20. The top of the top plate 21 contacts the right side of the lower surface of the rotating plate 14 with holes. A torsion spring 46 is wound around the outer side wall of the rotating column 13. The front end of the torsion spring 46 is fixedly connected to the inner side wall of the rotating plate 14 with holes, and the rear end of the torsion spring 46 is fixedly connected to the outer side wall of the rotating column 13.

[0028] The system includes a sewage pretreatment tank 1 and a biochemical tank. The pretreatment tank is used to perform preliminary treatment on the sewage, remove large particles of impurities, etc., and create conditions for subsequent biochemical treatment. The pretreatment tank is fixedly connected to the biochemical tank so that the sewage can flow smoothly into the biochemical tank. The interior of the biochemical tank is divided into areas with different functions, namely the disinfection tank 2, the anaerobic tank 3, the anoxic tank 4 and the aerobic tank 5. This zoning design is the core of the AAO process, and different microorganisms play a role under different environmental conditions. The bottom of the disinfection tank 2 is connected to the anaerobic tank 3 through a fixedly connected water inlet 6, and the sewage can flow naturally from the disinfection tank 2 to the anaerobic tank 3. The right side of the aerobic tank 5 is fixedly connected to the sewage pipe 7, and the right end of the sewage pipe 7 is fixedly connected to the sedimentation tank 8. The sewage enters the sedimentation tank 8 after being treated in the aerobic tank 5. In the sedimentation tank 8, the suspended matter in the sewage settles to the lower part, and the sludge discharge pipe 9 arranged at the lower part is used to regularly discharge the precipitated sludge. The right side of the sedimentation tank 8 is connected to the denitrification deep bed filter 11 through a fixedly connected drain pipe 10. The sewage after sedimentation is further treated in the denitrification deep bed filter 11 to remove residual pollutants and improve water quality. A medicine storage chamber 12 is fixedly connected to the left side of the upper surface of the biochemical tank, and a rotating column 13 is rotatably connected inside the medicine storage chamber 12. The rotation function of the rotating column 13 may be related to the mixing and delivery control of the medicine in the medicine storage chamber 12. The outflow of the medicine is controlled by the rotation angle of the rotating column 13. The outer wall of the rotating column 13 is connected to a rotating plate with holes 14, and the design of the rotating plate with holes 14 is to control the rate and mode of the medicine flowing out of the medicine storage chamber 12. The outer wall of the rotating plate with holes 14 is symmetrically provided with spring grooves 15, and each spring groove 15 is slidably connected to a slider 16. The back side of the slider 16 is fixedly connected to a baffle 17, and the opposite side of the slider 16 is fixedly connected to a spring 19 between the adjacent spring groove 15, and the elastic force of the spring 19 provides a reset and adjustment function for the sliding of the slider 16. The left side of the disinfection tank 2 is slidably connected to the floating plate 20, and the floating plate 20 can slide freely up and down according to the changes in the sewage water level in the disinfection tank 2. The upper surface of the floating plate 20 is fixedly connected to the top plate 21, and the top of the top plate 21 is in contact with the lower surface of the rotating plate with holes 14. This design cleverly links the water level changes in the disinfection tank 2 with the control of the dosage of the medicine in the medicine storage chamber 12. When the water level in the disinfection tank 2 changes, the floating plate 20 drives the top plate 21 to move up and down, thereby exerting a force on the rotating plate with holes 14, causing the rotating plate with holes 14 to rotate along the rotating column 13, so that the bottom end of the medicine storage chamber 12 opens, allowing the medicine inside to flow out. The more water there is inside, the more medicine flows out, which overcomes the waste of medicine and energy consumption caused by the extensive operation in the existing urban sewage treatment field, and at the same time effectively guarantees the dosage of disinfectants, ensures the effective elimination of bacteria and viruses, and reduces the risk of transmission of infectious viruses.

[0029] In this embodiment, a rotating chamber 22 is fixedly connected to the right side of the upper surface of the biochemical pool, located on the right side of the medicine storage chamber 12, and a motor 23 is fixedly connected to the interior of the rotating chamber 22. A rotating rod 24 is fixedly connected to the bottom of the output end of the motor 23, and the bottom end of the rotating rod 24 extends to the inside of the anaerobic tank 3. The inside of the anaerobic tank 3 is fixedly connected to a vertical cylinder 25 with holes through a cross bar. The outer wall of the vertical cylinder 25 with holes is provided with a guide groove 26. The bottom end of the rotating rod 24 extends to the bottom of the anaerobic tank 3 through the vertical cylinder 25 with holes, and is fixedly connected A turntable 44 is provided, the outer wall of the turntable 44 is rotatably connected to a mixing drum 27, a plurality of mixing blades 28 are symmetrically fixedly connected to the outer wall of the mixing drum 27, a connecting frame 29 is symmetrically fixedly connected to the outer wall of the mixing drum 27, a guide block 30 is fixedly connected to the top of the connecting frame 29, and the guide blocks 30 are slidably connected to the guide groove 26, a limiting block 31 is fixedly connected to the outer wall of the turntable 44, and a limiting slide groove 32 is provided on the inner wall of the mixing drum 27, and the limiting slide groove 32 is slidably connected to the limiting block 31;

[0030] A motor 23 is fixedly connected inside the rotating chamber 22, and the motor 23 serves as a power source to provide energy for subsequent rotating operations. A rotating rod 24 is fixedly connected to the bottom of the output end of the motor 23, and the rotating rod 24 can rotate under the drive of the motor 23, and its bottom end extends to the inside of the anaerobic tank 3, so as to realize the transmission of power from the top of the biochemical tank to the inside of the anaerobic tank 3 to drive the operation of related components. A perforated vertical cylinder 25 is fixedly connected to the inside of the anaerobic tank 3 through a cross bar. The outer side wall of the perforated vertical cylinder 25 is provided with a guide groove 26, which provides a sliding guide path for the subsequent parts that cooperate with it. On the one hand, the existence of the perforated vertical cylinder 25 may play a certain supporting role. The bottom end of the rotating rod 24 extends to the bottom of the anaerobic tank 3 through the perforated vertical cylinder 25 and is fixedly connected to a turntable 44. The turntable 44 is a key connection and transmission component, and its outer side wall is rotatably connected to a mixing drum 27. The outer wall of the mixing drum 27 is symmetrically fixedly connected with a plurality of stirring blades 28, which can stir the materials in the anaerobic tank 3 when the mixing drum 27 rotates, promote the uniform mixing of the materials, and improve the efficiency of the anaerobic reaction. The outer wall of the mixing drum 27 is also symmetrically fixedly connected with a connecting frame 29, and the top of the connecting frame 29 is fixedly connected with a guide block 30, and these guide blocks 30 are all slidably connected with the guide groove 26. This sliding connection between the guide block 30 and the guide groove 26 ensures that the mixing drum 27 can slide up and down as the turntable 44 rotates, maintains the stability and regularity of its movement, and prevents the occurrence of deviation or irregular rotation. At the same time, the outer wall of the turntable 44 is fixedly connected with a limit block 31, and the inner wall of the mixing drum 27 is provided with a limit slide 32, and the limit slide 32 is slidably connected with the limit block 31. This limiting structure further constrains the movement of the mixing drum 27 relative to the turntable 44, so that the mixing drum 27 can rotate smoothly around the turntable 44 during the rotation process, and can be subject to certain restrictions in the up and down directions, thereby ensuring that the entire mixing device can stably and efficiently perform mixing operations in the anaerobic tank 3, thereby better promoting the biochemical reactions related to sewage treatment in the anaerobic tank 3.

[0031] In the present embodiment, a telescopic cavity 33 is fixedly connected to the front surface of the biochemical pool, a vertical plate 34 is slidably connected to the interior of the telescopic cavity 33, a telescopic long plate 35 is fixedly connected to the front surface of the vertical plate 34, the front end of the telescopic long plate 35 penetrates into the interior of the anoxic pool 4, and a flow pusher 36 is fixedly connected to the right side of the telescopic long plate 35, which is located inside the anoxic pool 4, and an air squeeze cavity 37 is fixedly connected to the upper surface of the rotating cavity 22, and the top of the output end of the motor 23 penetrates into the interior of the air squeeze cavity 37 and is fixedly connected to a cam 45, and an air squeeze long plate 38 is slidably connected to the right side of the interior of the air squeeze cavity 37, a plurality of springs 39 are fixedly connected between the air squeeze long plate 38 and the air squeeze cavity 37, and an air outlet pipe 40 is fixedly connected between the air squeeze cavity 37 and the telescopic cavity 33;

[0032] A telescopic cavity 33 is fixedly connected to the front surface of the biochemical pool, and a vertical plate 34 is slidably connected inside the telescopic cavity 33. This sliding connection mode enables the vertical plate 34 to move relative to the front and rear directions in the telescopic cavity 33, thereby realizing the telescopic function. A telescopic long plate 35 is fixedly connected to the front surface of the vertical plate 34, and the front end of the telescopic long plate 35 penetrates into the interior of the anoxic pool 4. In addition, a flow pusher 36 is fixedly connected to the telescopic long plate 35 in the internal part of the anoxic pool 4. The function of the flow pusher 36 is usually to promote the flow of the water body in the anoxic pool 4 by generating a driving force of water flow, so that the sewage is fully in contact with the microorganisms in the pool, and then better promote the relevant biochemical reactions in the anoxic pool 4. The telescopic long plate 35 can adjust the position of the flow pusher 36 in the anoxic pool 4 according to actual needs by sliding the vertical plate 34 in the telescopic cavity 33, so as to adapt to different working conditions or processing requirements. An air squeezing cavity 37 is fixedly connected to the upper surface of the rotating cavity 22. The top of the output end of the motor 23 penetrates into the interior of the squeeze chamber 37, and a cam 45 is fixedly connected to its top. When the motor 23 is running, its output end not only drives the rotating rod 24 to rotate for the stirring operation in the anaerobic tank 3, but also the cam 45 at its top rotates. The rotation characteristic of the cam 45 is that the distance from different positions on its circumference to the center is variable, and this characteristic will produce a periodic driving effect in the squeeze chamber 37. A long squeeze plate 38 is slidably connected to the right side of the inside of the squeeze chamber 37, and a plurality of springs 2 39 are fixedly connected between the long squeeze plate 38 and the squeeze chamber 37. When the cam 45 rotates, the long squeeze plate 38 is periodically squeezed to slide in the squeeze chamber 37. Due to the presence of the spring 2 39, when the squeezing effect of the cam 45 disappears, the long squeeze plate 38 will return to its original position under the elastic restoring force of the spring 2 39. This periodic squeezing and resetting action makes the movement of the long squeeze plate 38 in the squeeze chamber 37 present a regular reciprocating pattern. An air outlet pipe 40 is fixedly connected between the squeezing chamber 37 and the telescopic chamber 33. This means that when the squeezing long plate 38 is squeezed and moved by the cam 45 in the squeezing chamber 37, the gas in the squeezing chamber 37 will be compressed, and the compressed gas will flow to the telescopic chamber 33 through the air outlet pipe 40, thereby pushing the vertical plate 34 in the telescopic chamber 33, further affecting the position or working state of the telescopic long plate 35 and the flow pusher 36 in the anoxic tank 4. This gas connection design cleverly links the power generated by the motor 23 in the squeezing chamber 37 to the telescopic chamber 33 and the flow pusher 36 in the anoxic tank 4 through gas transmission, so that the flow pusher 36 can move back and forth inside, making the flow pusher 36 more efficient, so as to better serve the operation of the entire sewage treatment system.

[0033] In this embodiment, a medicine adding opening 41 is formed on the upper surface of the medicine storage cavity 12, and an upper cover 42 is snap-fitted and connected inside the medicine adding opening 41;

[0034] The upper cover 42 is connected to the medicine adding port 41. The upper cover 42 plays a role of sealing and protection. When the medicine adding operation is not required, the upper cover 42 is tightly engaged in the medicine adding port 41, which can effectively prevent the medicine in the medicine storage cavity 12 from being disturbed by external factors, such as preventing dust, impurities, etc. from mixing into the medicine, avoiding affecting the purity and quality of the medicine, and thus ensuring that the medicine can play its due role normally in the sewage treatment process.

[0035] In this embodiment, an aerator 43 is fixedly connected to the inner lower surface of the aerobic tank 5, and a float 47 is fixedly connected to the lower surface of the floating plate 20;

[0036] The main function of the aerator 43 is to inject air into the sewage in the aerobic tank 5. During the sewage treatment process in the aerobic tank 5, aerobic microorganisms need sufficient oxygen to metabolize in order to decompose the organic pollutants in the sewage. The aerator 43 continuously injects air into the sewage in the form of tiny bubbles, so that oxygen can be fully dissolved in the sewage, providing the aerobic microorganisms with the oxygen environment necessary for their growth and metabolism. The main function of the float 47 is to assist the float plate 20 in better floating with the water level in the disinfection tank 2. Since the float 47 itself has certain buoyancy characteristics, it can increase the buoyancy of the entire float plate 20 structure in the sewage, so that the float plate 20 can float up and down more sensitively and stably as the sewage water level in the disinfection tank 2 rises or falls.

[0037] In this embodiment, a mud pump 48 is fixed in front of the biochemical pool, the input end of the mud pump 48 is fixedly connected to the outer wall of the mud discharge pipe 9, and the output end of the mud pump 48 passes through the interior of the anaerobic pool 3. A liquid pump 49 is fixed in front of the biochemical pool, the input end of which is fixedly connected to the aerobic pool 5, and the left end of the output end of the liquid pump 49 is fixedly connected to the anoxic pool 4.

[0038] The sludge at the bottom of the sedimentation tank 8 is collected through the sludge discharge pipe 9. After the sludge pump 48 is started, it uses its suction force to extract part of the sludge in the sludge discharge pipe 9. The sludge contains rich microorganisms and organic matter, and is transported back to the anaerobic tank 3 by the sludge pump 48. In the anaerobic tank 3, the microorganisms in the sludge continue to participate in the decomposition and transformation process of organic matter in the sewage in an anaerobic environment. This sludge return timely replenishes the sludge concentration of the biochemical tank.

[0039] The liquid pump 49 located on the front surface of the biochemical tank plays an important role in the reflux process of the nitrified liquid. The input and output ends of the liquid pump 49 are fixedly connected to the aerobic tank 5 and the anoxic tank 4 respectively. In the aerobic tank 5, the ammonia nitrogen in the sewage is converted into nitrification products such as nitrates through nitrification reaction under the action of aerobic microorganisms. After the liquid pump 49 is started, the nitrified liquid in the aerobic tank 5 is extracted and transported to the anoxic tank 4. The reflux of the nitrified liquid to the anoxic tank 4 is of great significance, as it can provide sufficient nitrate nitrogen as an electron acceptor for the denitrification reaction in the anoxic tank 4. In an anaerobic environment, denitrifying bacteria use organic matter in sewage as a carbon source to reduce nitrate nitrogen to nitrogen gas, thereby achieving the removal of nitrogen in sewage. This process not only reduces the nitrogen content in sewage, but also makes the entire sewage treatment system form a complete and mutually coordinated treatment process, improves the removal efficiency of pollutants such as organic matter and nitrogen in sewage, and ensures that the effluent water quality meets the discharge standards. Through the process of sludge returning to the anaerobic tank 3 and the nitrification liquid of the aerobic tank 5 returning to the anoxic tank 4, the improved AAO sewage treatment system can operate more efficiently and stably, give full play to the functions of each treatment unit, and realize deep treatment and purification of sewage.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic dosing adjustment and sufficient flow device based on the AAO process, comprising a sewage pretreatment tank (1) and a biochemical tank, characterized in that: The biochemical pool is divided into a disinfection pool (2), an anaerobic pool (3), an anoxic pool (4) and an aerobic pool (5) in sequence; a water outlet (6) is fixedly connected between the bottom of the disinfection pool (2) and the anaerobic pool (3); the sewage pretreatment pool (1) is fixedly connected to the biochemical pool; the right side of the aerobic pool (5) is fixedly connected to a sewage pipe (7); the right end of the sewage pipe (7) is fixedly connected to a sedimentation pool (8); a mud discharge pipe (9) is provided at the bottom of the sedimentation pool (8); the right side of the sedimentation pool (8) is fixedly connected to a drainage pipe (10); the right end of the drainage pipe (10) is fixedly connected to a denitrification deep bed filter (11); A medicine storage chamber (12) is fixedly connected to the left side of the upper surface of the biochemical pool, and a rotating column (13) is rotatably connected inside the medicine storage chamber (12). The outer wall of the rotating column (13) is rotatably connected to a rotating plate (14) with a hole. The outer wall of the rotating plate (14) with a hole is symmetrically provided with elastic grooves (15). Slide blocks (16) are slidably connected inside the elastic grooves (15). The opposite sides of the slide blocks (16) are fixedly connected to baffles (17). The opposite ends of the baffles (17) are rotatably connected to abutment blocks (18) through rotating blocks. The opposite sides of the slide blocks (16) are fixedly connected to the adjacent elastic grooves (15). A floating plate (20) is slidably connected to the left side of the interior of the disinfection pool (2). The upper surface of the floating plate (20) is fixedly connected to a top plate (21). The top end of the top plate (21) contacts the right side of the lower surface of the rotating plate (14) with a hole.

2. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: A rotating chamber (22) is fixedly connected to the left side of the upper surface of the biochemical pool and located on the right side of the medicine storage chamber (12). A motor (23) is fixedly connected to the interior of the rotating chamber (22). A rotating rod (24) is fixedly connected to the bottom of the output end of the motor (23). The bottom end of the rotating rod (24) extends to the interior of the anaerobic pool (3). A vertical cylinder (25) with holes is fixedly connected to the interior of the anaerobic pool (3) via a cross bar. A guide groove (26) is provided on the outer side wall of the vertical cylinder (25) with holes. The bottom end extends to the bottom of the anaerobic tank (3) through a vertical cylinder with holes (25) and is fixedly connected to a turntable (44). The outer wall of the turntable (44) is rotatably connected to a mixing drum (27). The outer wall of the mixing drum (27) is symmetrically fixedly connected to a plurality of mixing blades (28). The outer wall of the mixing drum (27) is symmetrically fixedly connected to a connecting frame (29). The top end of the connecting frame (29) is fixedly connected to a guide block (30). The guide blocks (30) are slidably connected to the guide groove (26).

3. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: The outer side wall of the rotating disk (44) is fixedly connected to a limit block (31), and the inner side wall of the mixing drum (27) is provided with a limit sliding groove (32), and the limit sliding groove (32) is slidably connected to the limit block (31).

4. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: A telescopic cavity (33) is fixedly connected to the front surface of the biochemical pool, a vertical plate (34) is slidably connected to the interior of the telescopic cavity (33), a telescopic long plate (35) is fixedly connected to the front surface of the vertical plate (34), the front end of the telescopic long plate (35) penetrates into the interior of the anoxic pool (4), and a flow promoter (36) is fixedly connected to the right side of the telescopic long plate (35) located inside the anoxic pool (4).

5. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: The upper surface of the rotating chamber (22) is fixedly connected with an air squeezing chamber (37); the top end of the output end of the motor (23) penetrates into the interior of the air squeezing chamber (37) and is fixedly connected with a cam (45); the right side of the interior of the air squeezing chamber (37) is slidably connected with an air squeezing long plate (38); a plurality of springs (39) are fixedly connected between the air squeezing long plate (38) and the air squeezing chamber (37); and an air outlet pipe (40) is fixedly connected between the air squeezing chamber (37) and the telescopic chamber (33).

6. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: The upper surface of the medicine storage cavity (12) is provided with a medicine adding opening (41), and the interior of the medicine adding opening (41) is snap-connected with an upper cover (42).

7. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: An aerator (43) is fixedly connected to the inner lower surface of the aerobic tank (5).

8. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: A torsion spring (46) is wound around the outer wall of the rotating column (13), the front end of the torsion spring (46) is fixedly connected to the inner wall of the rotating plate with holes (14), the rear end of the torsion spring (46) is fixedly connected to the outer wall of the rotating column (13), and a floating ball (47) is fixedly connected to the lower surface of the floating plate (20).

9. The automatic adjustment and sufficient flow-pushing device for dosing based on the AAO process according to claim 1 is characterized in that: A mud pump (48) is fixedly connected to the front of the biochemical pool, the input end of the mud pump (48) is fixedly connected to the outer wall of the mud discharge pipe (9), and the output end of the mud pump (48) passes through the interior of the anaerobic pool (3). A liquid pump (49) is fixedly connected to the front of the biochemical pool, the input end of the liquid pump (49) is fixedly connected to the aerobic pool (5), and the output end of the liquid pump (49) is fixedly connected to the anoxic pool (4).

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