Automatic dosing adjustment and full flow device based on AAO process

Abstract

The present invention discloses an automatic dosing adjustment and sufficient flow-pushing device based on the AAO process, which belongs to the field of sewage treatment technology. It includes a sewage pretreatment tank and a biochemical tank, and the biochemical tank is sequentially divided into a disinfection tank, an anaerobic tank, an anoxic tank, and an aerobic tank; 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 provided at the bottom of the sedimentation tank, and a drain pipe is fixedly connected to the right side of the sedimentation tank; this improved AAO sewage treatment system realizes the linkage between the amount of drug added and the water level of the disinfection tank through a clever structural design. When the water level of the disinfection tank changes, the floating plate drives the top plate to act on the perforated rotating plate, thereby controlling the amount of drug outflow from the drug storage chamber. This design overcomes the defects of extensive operation in the field of urban sewage treatment, avoids the waste of drug consumption and energy consumption, and at the same time, can effectively guarantee the amount of disinfectant added, ensure the effective elimination of bacteria and viruses, and reduce the risk of transmission of infectious viruses.

Description

Technical Field

[0001] The present 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 vigorous development of modern industry, the scale of industrial production continues to expand and its types are becoming increasingly diversified. From chemical industry, textile, printing and dyeing to mechanical processing, electronic manufacturing and many other fields, industrial production processes have generated 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 series, 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, inaccurate dosage of chemicals often leads to wasted drug and energy consumption, making it difficult to ensure effective disinfection of bacteria and viruses, posing a risk of infectious virus transmission. Furthermore, in various stages of sewage treatment, such as anaerobic, anoxic, and aerobic tanks, suboptimal mixing, flow generation, and aeration can hinder the efficient microbial decomposition of pollutants. Against this backdrop, the development of an improved sewage treatment system is crucial. 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; the present invention also has a purpose 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 the dosing based on the AAO process includes a sewage pretreatment tank and a biochemical tank. The biochemical tank is sequentially divided into a disinfection tank, an anaerobic tank, an anoxic tank and an aerobic tank. 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 provided at the bottom of the sedimentation tank. The right side of the sedimentation tank is fixedly connected to a drain pipe. The right end of the drain pipe is fixedly connected to a denitrification deep bed filter. The upper surface of the biochemical tank is fixedly connected to the bottom of the anaerobic tank. 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. Sliders are slidably connected to the inside of the elastic grooves, and the opposite sides of the sliders are fixedly connected to baffles. The opposite ends of the baffles are rotatably connected to blocks through rotating blocks. The opposite sides of the sliders are fixedly connected to the adjacent elastic grooves with springs. A floating plate is slidably connected to the left side of the interior of the disinfection tank, and the upper surface of the floating plate is fixedly connected to a top plate. 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. The bottom end of the output end of the motor is fixedly connected to a rotating rod, and the bottom end of the rotating rod extends to the interior of the anaerobic tank. The interior of the anaerobic tank is fixedly connected to a vertical cylinder with holes through a cross bar, and the outer wall of the vertical cylinder with holes is provided with a guide groove. 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. The outer wall of the turntable is rotatably connected to a mixing drum, and a plurality of stirring blades are symmetrically fixedly connected to the outer wall of the mixing drum. The outer wall of the mixing drum is symmetrically fixedly connected to a connecting frame, and the top of the connecting frame is fixedly connected to a guide block, and the guide blocks are slidably connected to the guide groove.

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

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

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

[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 tank changes, the floating plate drives the top plate to act on the perforated rotating plate, 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 and energy consumption. 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 the long-term stable operation of sewage treatment that meets environmental protection requirements.

[0016] The motor drives the rotating rod, which drives the turntable, mixing drum, and stirring blades. With the cooperation of the guide block and guide groove, and the limit block and limit chute, the mixing drum rotates stably, improving the efficiency of the anaerobic reaction. In the anoxic tank, the operation of the motor drives the cam to squeeze the air-extruding long plate, which supplies air to the telescopic chamber through the air outlet pipe to push the vertical plate. This allows the telescopic long plate and flow pusher to adjust their position as needed, enhancing water flow and the contact between sewage and microorganisms. These designs make the treatment processes in the anaerobic and anoxic tanks more efficient and stable, can give full play to the role of different microorganisms in their respective environments, improve the pollutant removal capacity of the entire sewage treatment system, and ensure sewage treatment quality;

[0017] Aerators within the aerobic tank continuously inject air into the sewage, increasing the amount of dissolved oxygen in the form of tiny bubbles. This provides a favorable metabolic environment for aerobic microorganisms, facilitates the decomposition of organic pollutants, and improves the aerobic tank's treatment efficiency. The floats beneath the float plates increase their buoyancy in the disinfection tank, allowing them to float more sensitively and stably with the water level. This design ensures the accuracy of the correlation between chemical dosage and water level changes, indirectly optimizing the sewage treatment process. Overall, these designs optimize the operational performance of key system links, ensuring the efficient and stable operation of the sewage treatment system and achieving better 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 This invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 This invention Figure 2 A schematic diagram of the enlarged structure at point 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] 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, sludge pipe; 10, drainage pipe; 11, denitrification deep bed filter; 12, drug storage chamber; 13, rotating column; 14, rotating plate with holes; 15, spring groove; 16, slider; 17, baffle; 18, stop 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 drum; 28. Mixing blade; 29. ​​Connecting frame; 30. Guide block; 31. Limit block; 32. Limit slide; 33. Telescopic chamber; 34. Vertical plate; 35. Telescopic long plate; 36. Flow pusher; 37. Extrusion chamber; 38. Extrusion long plate; 39. Spring 2; 40. Exhaust pipe; 41. Dosing 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, which 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, and a sedimentation tank 8 is fixedly connected to the right end of the sewage pipe 7. A mud discharge pipe 9 is provided 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, and a denitrification deep bed filter 11 is fixedly connected to the right end of the drainage pipe 10, and a drug 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 to the inside of the drug storage chamber 12, and the outer wall of the rotating column 13 The rotary connection is provided with a rotating plate 14 with a hole, and the outer side wall of the rotating plate 14 with a hole is symmetrically provided with a spring groove 15. The inside of the spring groove 15 is slidably connected with a slider 16, and the opposite side of the slider 16 is fixedly connected with a baffle 17. The opposite ends of the baffle 17 are rotatably connected with a stop block 18 through a rotating block. The opposite sides of the slider 16 are fixedly connected to the adjacent spring grooves 15 with a spring 19. The left side of the interior of the disinfection tank 2 is slidably connected with a floating plate 20, and the upper surface of the floating plate 20 is fixedly connected with a top plate 21. The top of the top plate 21 contacts the right side of the lower surface of the rotating plate 14 with a hole. 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 a hole, 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 function under different environmental conditions. The bottom of the disinfection tank 2 is connected to the anaerobic tank 3 through a fixed water inlet 6. 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. After being treated in the aerobic tank 5, the sewage enters the sedimentation tank 8. In the sedimentation tank 8, the suspended matter in the sewage settles to the lower part, and the sludge discharge pipe 9 provided at the lower part is used to regularly discharge the settled sludge. The right side of the sedimentation tank 8 is connected to a denitrification deep-bed filter 11 via a fixed, interconnected drain pipe 10. The sedimented wastewater undergoes further advanced treatment in the denitrification deep-bed filter 11 to remove residual pollutants and improve water quality. A drug storage chamber 12 is fixedly connected to the left side of the biochemical tank's upper surface. A rotating column 13 is rotatably connected to the interior of the chamber 12. The rotation of the rotating column 13 may be related to controlling the mixing and dosing of the reagent within the chamber 12. The outflow of the reagent is controlled by the rotation angle of the rotating column 13. The outer wall of the rotating column 13 is connected to a perforated rotating plate 14, which is designed to control the rate and pattern of the reagent's outflow from the chamber 12. The outer wall of the perforated rotating plate 14 is symmetrically defined with spring slots 15, each of which is slidably connected to a slider 16. The opposite side of the slider 16 is fixedly connected to a baffle 17. A spring 19 is fixedly connected between the opposite side of the slider 16 and the adjacent spring slot 15. The elastic force of the spring 19 provides reset and regulation for the sliding of the slider 16. The left side of the disinfection tank 2 is connected to the floating plate 20 for sliding movement. 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 will flow out, overcoming the waste of medicine and energy caused by the extensive operation in the existing urban sewage treatment field, while effectively ensuring the dosage of disinfectants, ensuring the effective elimination of bacteria and viruses, and reducing 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. The bottom end of the output end of the motor 23 is fixedly connected to a rotating rod 24. The bottom end of the rotating rod 24 extends to the interior of the anaerobic tank 3. The interior 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. There is a turntable 44, the outer side wall of the turntable 44 is rotatably connected to the mixing drum 27, the outer side wall of the mixing drum 27 is symmetrically fixedly connected to a plurality of mixing blades 28, the outer side wall of the mixing drum 27 is symmetrically fixedly connected to a connecting frame 29, the top 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, the outer side wall of the turntable 44 is fixedly connected to a limit block 31, the inner side wall of the mixing drum 27 is provided with a limit chute 32, the limit chute 32 is slidably connected to the limit block 31;

[0030] A motor 23 is fixedly connected to the inside of the rotating chamber 22. The motor 23 serves as a power source and provides energy for subsequent rotation operations. A rotating rod 24 is fixedly connected to the bottom of the output end of the motor 23. 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, thereby transmitting 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 wall of the perforated vertical cylinder 25 is provided with a guide groove 26, which provides a sliding guide path for subsequent components 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 serves as a key connection and transmission component, and its outer 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. These stirring blades 28 can stir the substances in the anaerobic tank 3 when the mixing drum 27 rotates, promote the uniform mixing of the substances, 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. The top of the connecting frame 29 is fixedly connected with a guide block 30, and these guide blocks 30 are all slidably connected to 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, maintaining the stability and regularity of its movement, and preventing 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 chute 32, and the limit chute 32 is slidably connected to 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 is subject to certain restrictions in the up and down directions, ensuring that the entire mixing device can perform mixing operations stably and efficiently in the anaerobic tank 3, thereby better promoting the progress of sewage treatment-related biochemical reactions in the anaerobic tank 3.

[0031] In this embodiment, the front surface of the biochemical pool is fixedly connected to a telescopic cavity 33, and a vertical plate 34 is slidably connected to the interior of the telescopic cavity 33. The front surface of the vertical plate 34 is fixedly connected to a telescopic long plate 35. The front end of the telescopic long plate 35 extends into the interior of the anoxic tank 4. On the right side of the telescopic long plate 35, a flow pusher 36 is fixedly connected to the interior of the anoxic tank 4. The upper surface of the rotating cavity 22 is fixedly connected to an air squeeze cavity 37. The top end of the output end of the motor 23 extends into the interior of the air squeeze cavity 37 and is fixedly connected to a cam 45. The right side of the interior of the air squeeze cavity 37 is slidably connected to an air squeeze long plate 38. A plurality of springs 39 are fixedly connected between the air squeeze long plate 38 and the air squeeze cavity 37. 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 tank, and a vertical plate 34 is slidably connected to the interior of the telescopic cavity 33. This sliding connection allows the vertical plate 34 to move relative to each other in the front-to-back direction within 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 extends into the interior of the anoxic tank 4. In addition, a flow pusher 36 is fixedly connected to the telescopic long plate 35 in the interior portion of the anoxic tank 4. The function of the flow pusher 36 is generally to promote the flow of water in the anoxic tank 4 by generating a propulsion force, so that the sewage and the microorganisms in the tank are fully in contact, thereby better promoting the relevant biochemical reactions in the anoxic tank 4. The telescopic long plate 35 can adjust the position of the flow pusher 36 in the anoxic tank 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 treatment requirements. An air squeeze chamber 37 is fixedly connected to the upper surface of the rotating chamber 22. The top end of the motor 23's output terminal extends into the squish chamber 37, and a cam 45 is fixedly connected to its top end. When the motor 23 is running, its output terminal not only drives the rotating rod 24 to rotate for stirring within the anaerobic tank 3, but also rotates the cam 45 at its top end. The rotational characteristic of the cam 45 is that the distance from its center varies at different positions on its circumference, which produces a periodic pushing action within the squish chamber 37. A squish plate 38 is slidably connected to the right side of the squish chamber 37, and multiple springs 39 are fixedly connected between the squish plate 38 and the squish chamber 37. When the cam 45 rotates, it periodically compresses the squish plate 38, causing it to slide within the squish chamber 37. Due to the presence of springs 39, when the squeezing effect of the cam 45 disappears, the squish plate 38 returns to its original position due to the elastic restoring force of springs 39. This periodic squeezing and returning action causes the squish plate 38 to move in a regular, reciprocating pattern within the squish chamber 37. 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. 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 connects 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, allowing the flow pusher 36 to move back and forth inside, making the flow pusher 36 more efficient and better serving the operation of the entire sewage treatment system.

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

[0034] The internal snap-fit ​​connection of the drug-addition port 41 is connected to an upper cover 42. The upper cover 42 provides both sealing and protection. When drug addition is not required, the upper cover 42 tightly engages the drug-addition port 41, effectively preventing the drug in the drug storage chamber 12 from being disturbed by external factors, such as dust and impurities, which could affect the drug's purity and quality, thereby ensuring that the drug can function properly during 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 carry out metabolism in order to decompose the organic pollutants in the sewage. The aerator 43 continuously blows air into the sewage in the form of tiny bubbles, so that oxygen can be fully dissolved in the sewage, providing 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 ball 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 sludge pump 48 is fixed in front of the biochemical pool, the input end of the sludge pump 48 is fixedly connected to the outer wall of the sludge discharge pipe 9, and the output end of the sludge 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] Sludge from the bottom of sedimentation tank 8 is collected through sludge discharge pipe 9. After sludge pump 48 is activated, it uses its suction force to extract some of the sludge from sludge discharge pipe 9. This sludge, rich in microorganisms and organic matter, is returned to anaerobic tank 3 by sludge pump 48. In anaerobic tank 3, the microorganisms in the sludge continue to participate in the decomposition and conversion of organic matter in the sewage in an oxygen-free environment. This sludge return promptly replenishes the sludge concentration in 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. 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 the sewage, but also enables the entire sewage treatment system to form a complete and mutually coordinated treatment process, thereby improving the removal efficiency of pollutants such as organic matter and nitrogen in the sewage, and ensuring that the effluent water quality meets the emission standards. Through the process of sludge returning to the anaerobic tank 3 and the nitrification liquid from 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 achieve in-depth treatment and purification of sewage.

[0040] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automatic dosing adjustment and sufficient flow-pushing device based on the AAO process, comprising a sewage pretreatment tank (1) and a biochemical tank, characterized in that: The biochemical pool is sequentially divided into a disinfection pool (2), an anaerobic pool (3), an anoxic pool (4) and an aerobic pool (5); 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 lower part 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); The left side of the upper surface of the biochemical pool is fixedly connected to a medicine storage chamber (12), the interior of the medicine storage chamber (12) is rotatably connected to a rotating column (13), the outer wall of the rotating column (13) is rotatably connected to a rotating plate with a hole (14), the outer wall of the rotating plate with a hole (14) is symmetrically provided with a spring groove (15), the interior of the spring groove (15) is slidably connected to a slider (16), the opposite side of the slider (16) is fixedly connected to a baffle (17), the back end of the baffle (17) is rotatably connected to a stop block (18) through a rotating block, the opposite side of the slider (16) is fixedly connected to the adjacent spring groove (15) with a spring 1 (19), the left side of the interior of the disinfection pool (2) is slidably connected to a floating plate (20), the floating plate ( The upper surface of the biochemical pool is fixedly connected to a top plate (21), the top of the top plate (21) contacts the right side of the lower surface of the perforated rotating plate (14), and when the water level of the disinfection pool (2) changes, the floating plate (20) drives the top plate (21) to act on the perforated rotating plate (14), thereby controlling the outflow of the medicine from the medicine storage chamber (12). The left side of the upper surface of the biochemical pool is fixedly connected to the right side of the medicine storage chamber (12), and the interior of the rotating chamber (22) is fixedly connected to a motor (23), and the bottom end of the output end of the motor (23) is fixedly connected to a rotating rod (24), and the bottom end of the rotating rod (24) extends to the interior of the anaerobic pool (3), and the interior of the anaerobic pool (3) is fixedly connected to a vertical rod with holes through a horizontal rod. The outer wall of the vertical cylinder with holes (25) 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 with holes (25), and is fixedly connected to a turntable (44), the outer wall of the turntable (44) is rotatably connected to the mixing cylinder (27), the outer wall of the mixing cylinder (27) is symmetrically fixedly connected to a plurality of mixing blades (28), the outer wall of the mixing cylinder (27) is symmetrically fixedly connected to a connecting frame (29), the top of each connecting frame (29) is fixedly connected to a guide block (30), each of the guide blocks (30) is slidably connected to the guide groove (26), the outer wall of the turntable (44) is fixedly connected to a limit block (31), the inner wall of the mixing cylinder (27) is fixedly connected to the limit block (31), and the inner wall of the mixing cylinder (27) is fixedly connected to the limit block (31). A limiting chute (32) is provided on the side wall, and the limiting chute (32) is slidably connected to the limiting block (31). The motor (23) drives the rotating rod (24) to drive the turntable (44), the mixing drum (27) and the mixing blade (28) to rotate. Under the cooperation of the guide block (30) and the guide groove (26), the limiting block (31) and the limiting chute (32), the mixing drum (27) rotates stably. The front surface of the biochemical pool is fixedly connected to a telescopic cavity (33), and the interior of the telescopic cavity (33) is slidably connected to a vertical plate (34). The front surface of the vertical plate (34) is fixedly connected to a telescopic long plate (35), and the front end of the telescopic long plate (35) penetrates into the interior of the anoxic pool (4).The right side of the telescopic long plate (35) is fixedly connected to a flow pusher (36) located inside the anoxic pool (4), the upper surface of the rotating chamber (22) is fixedly connected to an air squeeze chamber (37), the top end of the output end of the motor (23) passes through the interior of the air squeeze chamber (37) and is fixedly connected to a cam (45), the right side of the interior of the air squeeze chamber (37) is slidably connected to an air squeeze long plate (38), a plurality of springs (39) are fixedly connected between the air squeeze long plate (38) and the air squeeze chamber (37), and an air outlet pipe (40) is fixedly connected between the air squeeze chamber (37) and the telescopic chamber (33).

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

3. The automatic dosing adjustment and sufficient flow-pushing device 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).

4. The automatic dosing adjustment and sufficient flow-pushing device 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 (14) with a hole, and 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).

5. The automatic dosing adjustment and sufficient flow-pushing device 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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