An activated sludge process aerator

Abstract

The utility model relates to activated sludge technical field, concretely is a kind of activated sludge process aeration device, including the multiple groups of air guide pipe installed in aeration tank, the air guide pipe of multiple groups one end is connected with gas pipe A, the gas pipe A outside is equipped with sealing groove, rotating shaft is rotated in the sealing groove, the sealing groove outside is connected with two groups of guide pipe A, the piston driven by rotating shaft is slid in the guide pipe A of two groups, the utility model discloses the sewage of aeration tank edge is formed by the initiative turbulence in the process of spoiler lifting, break the edge area water flow stagnation state, prevent activated sludge and suspended particulate matter from depositing in pool wall bottom due to water flow power shortage, while promote the flow rate and turbulence degree of edge sewage, increase the contact area and contact length of sewage and aeration gas, solve the problem of low oxygen transfer efficiency in edge area, ensure that the whole pool sewage dissolved oxygen concentration is uniform, prevent the treatment efficiency decline caused by local anaerobic environment.

Description

Technical Field

[0001] This utility model relates to the field of activated sludge technology, specifically to an activated sludge aeration device. Background Technology

[0002] With the acceleration of industrial development and urbanization, the discharge of domestic sewage and industrial wastewater continues to grow, and the requirements for sewage treatment efficiency and discharge standards are constantly increasing.

[0003] Traditional aeration devices often create weak water flow zones at the edges or corners of the aeration tank, leading to insufficient dissolved oxygen in local wastewater or sludge sedimentation, thus affecting the overall treatment effect. Furthermore, during aeration, activated sludge and suspended impurities tend to adhere to the inside of the aeration nozzle orifices, which can cause nozzle blockage over time, requiring frequent shutdowns for disassembly and cleaning, thus reducing the stability of the aeration device during use. Utility Model Content

[0004] This invention actively turbulents the wastewater at the edge of the aeration tank during the raising and lowering of the baffle plate, breaking the stagnant water flow in the edge area and preventing activated sludge and suspended particles from settling at the bottom of the tank wall due to insufficient water flow. At the same time, it increases the flow rate and turbulence of the wastewater at the edge, increases the contact area and contact time between the wastewater and the aeration gas, solves the problem of low oxygen transfer efficiency in the edge area, ensures uniform dissolved oxygen concentration in the entire tank, and prevents the decrease in treatment efficiency caused by local anaerobic environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an activated sludge aeration device, comprising multiple sets of air guide pipes installed inside an aeration tank, each set of air guide pipes having an air supply pipe A connected to one end, a sealing groove installed on the outside of the air supply pipe A, a rotating shaft rotating inside the sealing groove, two sets of guide pipes A connected to the outside of the sealing groove, pistons driven by the rotating shaft sliding inside each of the two sets of guide pipes A, an air storage tank connected to one end of each of the two sets of air storage tanks, two sets of guide pipes B connected to the other end of each of the guide pipes B, a baffle plate connected to one end of each guide pipe B, and an air supply pipe B connected to one side of each guide pipe B.

[0006] Preferably, multiple sets of nozzles A are installed on the outer side of each of the multiple sets of air ducts, and one end of each air duct A is connected to a blower.

[0007] Preferably, multiple sets of impellers are fixedly connected to the outer side of the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the sealing groove. Both ends of the rotating shaft are connected to reciprocating screws, and the other end of the reciprocating screws extends through the sealing groove into the guide tube A. The reciprocating screws are connected to the piston ball nut pair. One end of the guide tube A is fixedly connected to a connecting pipe A, and the other end of the connecting pipe A is connected to a gas storage tank. A one-way valve is provided at the connection between the connecting pipe A and the gas storage tank.

[0008] Preferably, a connecting pipe B is fixedly connected to the other end of the gas storage tank, a pressure valve is provided at the connection between the gas storage tank and the connecting pipe B, and two sets of guide pipes B are connected to the other end of the connecting pipe B. A push rod is slidably connected inside each of the two sets of guide pipes B, and a baffle is fixedly connected to one end of the push rod.

[0009] Preferably, the inner wall of the aeration tank is equipped with two sets of support plates, the guide pipe B is located at the upper end of the support plates, one end of the baffle is fixedly connected to two sets of springs, and the other end of the two sets of springs is connected to the lower end of the support plates.

[0010] Preferably, the guide tube B is internally connected to a connecting tube C, the other end of the connecting tube C is connected to the air supply tube B, and multiple sets of nozzles B are fixedly connected to the outside of the air supply tube B, with the nozzles B located between the multiple sets of nozzles A.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. During the raising and lowering of the baffle plate, active turbulence is created on the sewage at the edge of the aeration tank, breaking the stagnant water flow in the edge area. This prevents activated sludge and suspended particles from settling at the bottom of the tank wall due to insufficient water flow dynamics. At the same time, it increases the flow rate and turbulence of the sewage at the edge, increases the contact area and contact time between the sewage and the aeration gas, solves the problem of low oxygen transfer efficiency in the edge area, ensures uniform dissolved oxygen concentration in the entire tank, and prevents the decrease in treatment efficiency caused by local anaerobic environment.

[0012] 2. The pulse force generated by the high-speed jet of nozzle B actively impacts and cleans the surrounding nozzles A, promptly removing the attached activated sludge and suspended impurities, preventing the internal pores of nozzle A from becoming clogged, ensuring unobstructed aeration channels, and reducing the frequency of nozzle A clogging through the pulse cleaning mechanism, thereby reducing the number of times nozzle A is clogged, reducing the number of times disassembly and maintenance is required, reducing equipment downtime, and ensuring the long-term stable operation of the aeration device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an activated sludge aeration device according to the present invention. Figure 2 This is the second schematic diagram of the overall structure of an activated sludge aeration device according to the present invention; Figure 3 This is a structural diagram of the internal structure of the aeration tank of an activated sludge aeration device according to the present invention; Figure 4 This is a partial structural diagram of an activated sludge aeration device according to the present invention; Figure 5 This is a partial structural cross-sectional view of an activated sludge aeration device according to the present invention.

[0014] In the diagram: 1. Aeration tank; 2. Air supply pipe A; 3. Nozzle A; 4. Sealing groove; 5. Impeller; 6. Rotating shaft; 7. Reciprocating screw; 8. Piston; 9. Guide pipe A; 10. Connecting pipe A; 11. Air storage tank; 12. Connecting pipe B; 13. Guide pipe B; 14. Push rod; 15. Support plate; 16. Baffle plate; 17. Spring; 18. Connecting pipe C; 19. Air supply pipe B; 20. Nozzle B; 21. Air guide pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 5 This utility model provides an activated sludge aeration device, including multiple sets of air guide pipes 21 installed inside an aeration tank 1. Each set of air guide pipes 21 is connected to an air supply pipe A2 at one end. A sealing groove 4 is installed on the outside of the air supply pipe A2. A rotating shaft 6 rotates inside the sealing groove 4. Two sets of guide pipes A9 are connected to the outside of the sealing groove 4. A piston 8 driven by the rotating shaft 6 slides inside each of the two sets of guide pipes A9. One end of each of the two sets of guide pipes A9 is connected to an air storage tank 11. The other end of each of the two sets of air storage tanks 11 is connected to two sets of guide pipes B13. One end of the guide pipe B13 is connected to a baffle plate 16, and one side of the guide pipe B13 is connected to the air supply pipe B19.

[0017] In an optional embodiment, multiple sets of nozzles A3 are installed on the outer side of multiple sets of air guide pipes 21. One end of the air supply pipe A2 is connected to a blower. When using the device, the operator starts the blower, which compresses the outside air and delivers it to the inside of the air guide pipe 21 through the air supply pipe A2. When the compressed air enters the inside of the air guide pipe 21, the air will be sprayed out through the multiple sets of nozzles A3 on the outer side of the air guide pipe 21. When the air is sprayed out through the multiple sets of nozzles A3, a large number of bubbles will be formed inside the aeration tank 1. During the rising process of the bubbles, they come into full contact with the sewage, and the bubbles will drive the surrounding sewage to flow upward, forming a longitudinal stirring flow to prevent sludge from settling.

[0018] In an optional embodiment, multiple sets of impellers 5 are fixedly connected to the outer side of the rotating shaft 6, and the rotating shaft 6 is rotatably connected to the inner wall of the sealing groove 4. Reciprocating screws 7 are connected to both ends of the rotating shaft 6. The other end of the reciprocating screw 7 extends through the sealing groove 4 into the guide tube A9. The reciprocating screw 7 is connected to the piston 8 ball nut assembly. A connecting pipe A10 is fixedly connected to one end of the guide tube A9, and the other end of the connecting pipe A10 is connected to an air storage tank 11. A one-way valve is provided at the connection between the connecting pipe A10 and the air storage tank 11. Therefore, when the blower delivers compressed gas through the air supply pipe A2, the gas will drive the air supply pipe A2 as it passes through its interior. Multiple impellers 5 rotate, which synchronously drives the rotating shaft 6 to rotate. When the rotating shaft 6 rotates, it synchronously drives two sets of reciprocating screws 7 to rotate. The guide tube A9 has a guide groove inside, and the piston 8 is slidably connected to the guide groove. When the two sets of reciprocating screws 7 rotate, they drive the piston 8 to reciprocate inside the guide tube A9. During the reciprocating movement of the piston 8, it continuously delivers gas into the connecting tube A10. After the gas enters the connecting tube A10, the connecting tube A10 delivers the gas to the gas storage tank 11. After the gas enters the gas storage tank 11, it is stored inside the gas storage tank 11.

[0019] In an optional embodiment, a connecting pipe B12 is fixedly connected to the other end of the gas storage tank 11. A pressure valve is provided at the connection between the gas storage tank 11 and the connecting pipe B12. Two sets of guide pipes B13 are connected to the other end of the connecting pipe B12. A push rod 14 is slidably connected inside each of the two sets of guide pipes B13. One end of the push rod 14 is fixedly connected to a baffle 16. As described above, when the amount of gas inside the gas storage tank 11 gradually increases, the gas pressure inside the gas storage tank 11 will gradually increase. When the gas pressure inside the gas storage tank 11 reaches a certain threshold, the pressure valve at the connection between the gas storage tank 11 and the connecting pipe B12 will open. After the pressure valve opens, the gas stored inside the gas storage tank 11 will be quickly transported through the connecting pipe B12 to the two sets of guide pipes B13. After the gas quickly enters the guide tube B13, the push rod 14 will quickly push downward. When the push rod 14 pushes downward, it will simultaneously push the baffle 16 down, so that the baffle 16 contacts the bottom of the aeration tank 1. When the push rod 14 pushes the baffle 16 to contact the bottom of the aeration tank 1, the gas that has entered the guide tube B13 will enter the connecting tube C18 because the position of the baffle 16 has dropped.

[0020] In an optional embodiment, two sets of support plates 15 are installed on the inner wall of the aeration tank 1. The guide pipe B13 is located at the upper end of the support plate 15. One end of the baffle plate 16 is fixedly connected to two sets of springs 17, and the other end of the two sets of springs 17 is connected to the lower end of the support plate 15. As described above, when the baffle plate 16 descends and contacts the bottom of the aeration tank 1, as the gas gradually passes through the inside of the connecting pipe C18, the gas pressure entering the inside of the guide pipe B13 gradually decreases. The baffle plate 16 will gradually reset under the force of the two sets of springs 17. When the baffle plate 16 resets, it will simultaneously push the push rod 14 to reset. Thus, during the rising and falling process of the baffle plate 16, it will affect the aeration tank 1. The wastewater at the inner edge of the aeration tank 1 is turbulent to prevent sedimentation and insufficient contact with oxygen due to weak water flow. The baffle plate 16 actively turbulentizes the wastewater at the edge of the aeration tank 1 during its raising and lowering process, breaking the stagnant water flow in the edge area. This prevents activated sludge and suspended particles from settling at the bottom of the tank wall due to insufficient water flow, while also increasing the flow rate and turbulence of the wastewater at the edge. This increases the contact area and contact time between the wastewater and the aeration gas, solving the problem of low oxygen transfer efficiency in the edge area, ensuring uniform dissolved oxygen concentration throughout the tank, and preventing a decrease in treatment efficiency caused by local anaerobic environments.

[0021] In an optional embodiment, a connecting pipe C18 is connected inside the guide pipe B13, and the other end of the connecting pipe C18 is connected to the gas supply pipe B19. Multiple sets of nozzles B20 are fixedly connected to the outside of the gas supply pipe B19, and the nozzles B20 are located between the multiple sets of nozzles A3. After the gas enters the connecting pipe C18, it enters the guide pipe B13 at a relatively high speed. Consequently, when the gas enters the connecting pipe C18, it also flows at a relatively high speed. When the gas enters the gas supply pipe B19 through the connecting pipe C18, it is ejected through the multiple sets of nozzles B20 on the outside of the gas supply pipe B19. Due to the high gas flow speed, the gas is ejected through the nozzles B20. When nozzle B20 is ejected, it is ejected rapidly at a relatively fast speed, thus forming a small-scale pulse force. Since nozzle B20 is located among multiple nozzles A3, when nozzle B20 ejects gas and generates pulse force, it simultaneously cleans the surrounding nozzles A3, preventing blockage caused by excessive impurities adhering to nozzles A3. Thus, the pulse force generated by the high-speed air jet from nozzle B20 actively impacts and cleans the surrounding nozzles A3, promptly removing attached activated sludge and suspended impurities, preventing blockage of the internal pores of nozzles A3, ensuring unobstructed aeration channels, and reducing the frequency of nozzle blockage through the pulse cleaning mechanism. At the same time, the pulse cleaning mechanism reduces the frequency of nozzle blockage in A3, reduces the number of frequent disassembly and maintenance, reduces equipment downtime, and ensures the long-term stable operation of the aeration device.

[0022] Working principle: When using the device, the operator starts the blower, which compresses the outside air and delivers it to the air guide pipe 21 through the air supply pipe A2. After the compressed air enters the air guide pipe 21, it will be sprayed out through multiple sets of nozzles A3 on the outside of the air guide pipe 21. When the air is sprayed out through the multiple sets of nozzles A3, a large number of bubbles will be formed inside the aeration tank 1. As the bubbles rise, they come into full contact with the sewage, and the bubbles will drive the surrounding sewage to flow upward, forming a longitudinal stirring flow. When the blower delivers compressed gas through the gas delivery pipe A2, the gas drives multiple sets of impellers 5 to rotate as it passes through the inside of the gas delivery pipe A2. When the impellers 5 rotate, they synchronously drive the rotating shaft 6 to rotate. When the rotating shaft 6 rotates, it synchronously drives two sets of reciprocating screws 7 to rotate. The guide pipe A9 has a guide groove inside, and the piston 8 is slidably connected to the guide groove. When the two sets of reciprocating screws 7 rotate, they drive the piston 8 to reciprocate inside the guide pipe A9. During the reciprocating movement of the piston 8, it continuously delivers gas into the connecting pipe A10. After the gas enters the connecting pipe A10, the connecting pipe A10 delivers the gas to the gas storage tank 11. After the gas enters the gas storage tank 11, it is stored inside the gas storage tank 11. As the amount of gas inside the gas storage tank 11 gradually increases, the gas pressure inside the gas storage tank 11 will gradually increase. When the gas pressure inside the gas storage tank 11 reaches a certain threshold, the pressure valve at the connection between the gas storage tank 11 and the connecting pipe B12 will open. After the pressure valve opens, the gas stored inside the gas storage tank 11 will be quickly transported through the connecting pipe B12 to the two sets of guide pipes B13. After the gas quickly enters the guide pipes B13, the push rod 14 will be pushed down quickly. When the push rod 14 is pushed down, it will simultaneously push the baffle 16 down, so that the baffle 16 contacts the bottom of the aeration tank 1. When the push rod 14 pushes the baffle 16 to contact the bottom of the aeration tank 1, the gas that has entered the guide pipe B13 will enter the connecting pipe C18 because the position of the baffle 16 has dropped. When the baffle plate 16 descends and contacts the bottom of the aeration tank 1, as the gas gradually passes through the inside of the connecting pipe C18, the gas pressure entering the guide pipe B13 gradually decreases. The baffle plate 16 will gradually reset under the force of the two sets of springs 17. When the baffle plate 16 resets, it will push the push rod 14 to reset simultaneously. Thus, during the process of the baffle plate 16 rising and falling, it will turbulent the sewage at the inner edge of the aeration tank 1. After the gas enters the connecting pipe C18, it enters the guide pipe B13 at a relatively high speed. Consequently, the gas also flows at a relatively high speed when it enters the connecting pipe C18. When the gas enters the gas supply pipe B19 through the connecting pipe C18, it is ejected through multiple sets of nozzles B20 on the outside of the gas supply pipe B19. Due to the high gas flow speed, the gas is ejected quickly through the nozzles B20, thus forming a small-scale pulse force. Since the nozzles B20 are located among multiple sets of nozzles A3, the pulse force generated by the gas ejected from the nozzles B20 simultaneously cleans the surrounding nozzles A3.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An activated sludge aeration device, comprising multiple sets of air guide pipes (21) installed inside an aeration tank (1), wherein one end of each set of air guide pipes (21) is connected to an air supply pipe A (2), characterized in that, A sealing groove (4) is installed on the outside of the gas pipe A (2). A rotating shaft (6) rotates inside the sealing groove (4). Two sets of guide pipes A (9) are connected to the outside of the sealing groove (4). A piston (8) driven by the rotating shaft (6) slides inside the two sets of guide pipes A (9). One end of the two sets of guide pipes A (9) is connected to a gas storage tank (11). The other end of the two sets of gas storage tanks (11) is connected to two sets of guide pipes B (13). One end of the guide pipe B (13) is connected to a baffle plate (16). One side of the guide pipe B (13) is connected to a gas pipe B (19).

2. An activated sludge process aeration device according to claim 1, characterised in that Multiple sets of nozzles A (3) are installed on the outside of the multiple sets of air ducts (21), and one end of the air duct A (2) is connected to the blower.

3. An activated sludge process aeration device according to claim 1, characterised in that Multiple impellers (5) are fixedly connected to the outside of the rotating shaft (6), and the rotating shaft (6) is rotatably connected to the inner wall of the sealing groove (4). Both ends of the rotating shaft (6) are connected to reciprocating screws (7). The other end of the reciprocating screws (7) extends through the sealing groove (4) to the inside of the guide tube A (9). The reciprocating screws (7) are connected to the piston (8) ball nut pair. One end of the guide tube A (9) is fixedly connected to the connecting tube A (10), and the other end of the connecting tube A (10) is connected to the gas storage tank (11). A one-way valve is provided at the connection between the connecting tube A (10) and the gas storage tank (11).

4. An activated sludge process aeration device according to claim 1, characterised in that The gas storage tank (11) is fixedly connected to a connecting pipe B (12) at the other end. A pressure valve is provided at the connection between the gas storage tank (11) and the connecting pipe B (12). The connecting pipe B (12) is connected to two sets of guide pipes B (13) at the other end. Push rods (14) are slidably connected inside the two sets of guide pipes B (13). One end of the push rod (14) is fixedly connected to a spoiler (16).

5. An activated sludge process aeration device according to claim 1, wherein The aeration tank (1) has two sets of support plates (15) installed on its inner wall. The guide pipe B (13) is located at the upper end of the support plate (15). One end of the baffle plate (16) is fixedly connected to two sets of springs (17), and the other end of the two sets of springs (17) is connected to the lower end of the support plate (15).

6. An activated sludge process aeration device according to claim 1, characterised in that The guide tube B (13) is connected to the connecting tube C (18), and the other end of the connecting tube C (18) is connected to the gas supply tube B (19). Multiple sets of nozzles B (20) are fixedly connected to the outside of the gas supply tube B (19), and the nozzles B (20) are located between multiple sets of nozzles A (3).

Images