Aeration tank assembly for sewage treatment

Abstract

The present invention relates to the field of sewage treatment, and discloses an aeration tank assembly for sewage treatment, the aeration tank assembly comprises an aeration tank, an aeration assembly and a stirring assembly, the stirring assembly comprises a stirring part located at the bottom of the aeration tank and a traction part used for pulling the stirring part to reciprocate along the length direction of the aeration tank, and the stirring part comprises a scraper plate seat, the extending direction of the scraper base is parallel to the width direction of the aeration tank, the two side faces, in the length direction of the aeration tank, of the scraper base are obliquely arranged, the distance between the two side faces is gradually decreased from bottom to top in the vertical direction, the interior of the scraper base is hollow, a pneumatic motor is arranged in the scraper base, and pushing pieces are arranged on the two obliquely-arranged side faces of the scraper base correspondingly; a plurality of stirring pieces are arranged on the upper surface of the scraper base, the stirring pieces are arranged in an array mode in the extending direction of the scraper base, the pushing piece is used for pulling activated sludge shoveled by the scraper base to move towards the stirring pieces, and the pneumatic motor is used for driving the pushing piece and the stirring pieces to rotate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, and particularly relates to a sewage treatment aeration tank assembly. BACKGROUND

[0002] The aeration tank is the core structure in the activated sludge process of sewage treatment. Its main function is to provide oxygen for the growth and metabolism of aerobic microorganisms (activated sludge) in the sewage by forcibly charging air (or oxygen) into the sewage, thereby condensing these microorganisms together to form flocculent sludge. These microorganisms take organic pollutants in the sewage as "food" and decompose the organic matter into harmless substances such as carbon dioxide and water through their life activities, thereby achieving the purification of the sewage. Therefore, oxygen supply and stirring are the two important factors that affect the results of sewage treatment in the aeration tank. Among them, oxygen supply refers to providing oxygen necessary for the survival of aerobic microorganisms, and stirring is to uniformly distribute the aerobic microorganisms (activated sludge) in the tank. The cooperation of the two can make the aerobic microorganisms uniformly contact with the pollutants in the sewage and the aerobic microorganisms can obtain a good living environment, so as to obtain the best sewage treatment results.

[0003] In the prior art, air is sent into the aeration tank at the bottom of the tank by a blower or the like to produce a large number of small bubbles that flow upward, taking the surrounding water and sludge with them to achieve the purpose of oxygen supply and uniform distribution. However, this method has some shortcomings, specifically: the traction of the bubbles flowing upward is weak, although it can drag a part of the small activated sludge to flow, but there is still a part of the activated sludge with a larger volume that will not be dragged or has a weak tendency to move, and the distribution uniformity is not enough. In addition, this part of the activated sludge is condensed together, so the oxygen content near it should be larger to meet the survival and decomposition of organic matter of the aerobic microorganisms in the activated sludge. However, the aeration tank makes the air in the tank more evenly distributed, so the aerobic microorganisms of this part of the activated sludge are not in a good production environment and the decomposition of organic matter is not maximized.

[0004] Based on the above, the present application provides a sewage treatment aeration tank assembly. SUMMARY

[0005] To solve the problems mentioned in the above background, the present application provides a sewage treatment aeration tank assembly.

[0006] To achieve the above technical purpose, the technical solution adopted by the present application is as follows.

[0007] A sewage treatment aeration tank assembly, comprising an aeration tank, an aeration assembly and a stirring assembly. The stirring assembly comprises a stirring component located at the bottom of the aeration tank and a traction component for pulling the stirring component to reciprocate along the length direction of the aeration tank; The stirring component comprises a scraper seat, the extension direction of the scraper seat is parallel to the width direction of the aeration tank, the two side surfaces of the scraper seat along the length direction of the aeration tank are arranged in an inclined manner and the distance between the two side surfaces decreases along the vertical direction from bottom to top, the inside of the scraper seat is hollow and is provided with a pneumatic motor; The two side surfaces of the scraper seat arranged in an inclined manner are provided with a pushing component, the upper surface of the scraper seat is provided with a stirring component, the stirring component is arranged in an array along the extension direction of the scraper seat, the pushing component is used for pulling the activated sludge scraped up by the scraper seat to move to the stirring component; The pneumatic motor is used for driving the pushing component and the stirring component to rotate.

[0008] Further, the pushing component comprises a pushing shaft, the axis direction of the pushing shaft is parallel to the width direction of the aeration tank, the outer circular surface of the pushing shaft is provided with a pushing blade in the radial direction, the pushing blade is arranged in an array along the circumferential direction of the pushing shaft; The pushing shaft is in the shape of a hollow shaft, the pushing shaft is communicated with the inner cavity of the scraper seat, the inside of the pushing blade is hollow and is communicated with the inner cavity of the pushing shaft, the outer surface of the pushing blade is arranged in an array with a plurality of pushing air holes; The pushing shaft is in power connection with the pneumatic motor.

[0009] Further, the stirring component comprises a stirring shaft arranged in a vertical manner, the outer circular surface of the stirring shaft is provided with a blade unit, the blade unit is arranged in an array along the axis direction of the stirring shaft, the blade unit comprises a rotating blade provided on the outer circular surface of the stirring shaft, the rotating blade is arranged in an array along the circumferential direction of the stirring shaft; The pneumatic motor is in power connection with the stirring shaft.

[0010] Further, the traction component comprises a bracket body provided on one side of the aeration tank, the bracket body is provided with a synchronous belt, the traction direction of the synchronous belt is parallel to the length direction of the aeration tank; The upper surface of the scraper seat is provided with a connecting rod, the upper end of the connecting rod is provided with a guide hole arranged in a vertical manner, a pin rod is slidably arranged in the guide hole, the tail end of the pin rod is connected with the synchronous belt.

[0011] Further, the lower end of the connecting rod extends into the scraper seat and is connected with the air inlet of the pneumatic motor, the air outlet of the pneumatic motor is communicated with the scraper seat; The side surface of the connecting rod is provided with a connecting channel communicated with the air inlet of the pneumatic motor.

[0012] Further, the tail end of the connecting channel is provided with a hose, the tail end of the hose is connected with an air compressor.

[0013] Further, the end of the connecting channel is provided with a gas supply component; The gas supply component comprises two oppositely arranged side seats, a distance exists between the upper ends of the two side seats, the lower ends of the two side seats are connected, and a gas supply area with an open upper end and a closed lower end and a length direction parallel to the length direction of the aeration tank is formed between the two side seats; A rotating roller is arranged between the two side seats, the rotating roller is provided with two and is located at the two ends of the gas supply area respectively, a conveying belt is arranged between the two rotating rollers, and the upper surface of the conveying belt blocks the upper opening of the gas supply area; The upper surface of the conveying belt is provided with a connecting port, and the upper opening of the connecting port is connected with the end of the connecting channel; The side surface of the side seat is provided with a side hole, a side connecting nozzle is arranged at the opening of the side hole, and the end of the side connecting nozzle is connected with an air compressor.

[0014] Further, the aeration assembly comprises a main pipeline located above the aeration tank, the extension direction of the main pipeline is parallel to the length direction of the aeration tank, one end of the main pipeline is closed, and the other end is connected with a blower; The main pipeline is provided with a gas supply component, and a plurality of gas supply components are arranged in the extension direction of the main pipeline; The gas supply component comprises a branch pipeline connected with the main pipeline, the extension direction of the branch pipeline is parallel to the width direction of the aeration tank, and the branch pipeline is provided with two and is located at the two sides of the main pipeline along the center line thereof; The branch pipeline is provided with a gas supply unit, and a plurality of gas supply units are arranged in the extension direction of the branch pipeline; The gas supply unit comprises a gas supply pipe arranged vertically, the upper end of the gas supply pipe is connected with the branch pipeline and the gas supply pipe is located below the branch pipeline, and the lower end of the gas supply pipe is provided with a gas supply head, the gas supply head extends into the aeration tank and is close to the bottom of the aeration tank.

[0015] Further, the gas supply head comprises a cone, the inside of the cone is hollow, the diameter of the cone decreases from top to bottom, the upper end of the cone is provided with a connecting hole, a convex pipe is arranged at the upper opening of the connecting hole, the convex pipe is movably connected with the lower end of the gas supply pipe, the outer circular surface of the cone is provided with a side gas supply hole, a plurality of side gas supply holes are arranged in the circumferential direction of the cone, and the lower end of the cone is provided with a bottom gas supply hole.

[0016] Compared with the prior art, the present application has the following beneficial effects: I. The blower operates, air flows into the gas supply head through the main pipeline, the branch pipeline and the gas supply pipe, and enters the aeration tank through the side gas supply hole and the bottom gas supply hole, under the action of the reaction force, the cone rotates, that is, the gas supply head rotates, thereby realizing better aeration effect; II. The present application constructs a gas-driven active sludge uniform suspension integrated scheme in the bottom of the aeration tank, and the technical advantage is that: Technical effect 1: The present case sets a scraper seat reciprocating along the length direction of the aeration tank at the bottom of the aeration tank. The inclined surface of the scraper seat is arranged obliquely, which can shovel the activated sludge at the bottom of the tank, effectively avoid the activated sludge sinking to the bottom of the tank, cause anaerobic fermentation, produce odor, and cause the problem that the sewage cannot be effectively treated; Technical effect 2: The present case supplies air through a unique pipeline and drives the stirring component to run by using air pressure. On the one hand, the air finally released by the air motor is part of the aeration, which further improves the aeration effect. On the other hand, when there is a large amount of activated sludge sinking to the bottom of the tank in a certain area, the resistance received by the pushing blade when pushing the sludge to the position of the rotating blade is greater, so the load of the air motor is greater, and more compressed air is needed to drive the pushing blade. Finally, a larger amount of air does work and is released to mix with the activated sludge, completing adaptive aeration and providing a good living environment for aerobic microorganisms in the activated sludge. Similarly, when there is a small amount of activated sludge sinking to the bottom of the tank in a certain area, the resistance received by the pushing blade when pushing the sludge to the position of the rotating blade is smaller, so the load of the air motor is smaller, and less compressed air is needed to drive the pushing blade. In short, the present case can adaptively match the corresponding air volume with the mixed and blended activated sludge according to the amount of activated sludge shovelled up, so that the oxygen supply of unit amount of activated sludge is balanced. It should be noted that in the air motor technology, the torque generated by the air pressure inside the air motor and the resistance torque exerted by the external load are in dynamic balance. When the load of the air motor increases, its speed begins to drop, which will be detected by the air pressure regulation system (such as a pressure reducing valve) or a more precise flow control valve. The system will respond accordingly, such as increasing the opening of the inlet valve to allow more compressed air to enter the air motor at a higher speed to maintain the set speed. This is a prior art that can be achieved and will not be described in detail. Technical effect 3: After the activated sludge is pushed to the position of the rotating blade, it will be scattered and splashed by the rotating rotating blade, so that the activated sludge is more evenly distributed in the aeration tank. Further, the more activated sludge shovelled up, the greater the resistance received by the rotating blade, and the slower the rotational speed, so that the large amount of activated sludge has more time to contact with the large amount of air, ensuring that the aerobic microorganisms in the activated sludge are in a good living environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Structure diagram of the present application Figure 1 ; Figure 2 Structure diagram of the present application Figure 2 ; Figure 3This is a schematic diagram of the aeration component. Figure 4 This is a schematic diagram of the aeration head structure; Figure 5 This is a schematic diagram of the stirring assembly. Figure 6 This is a sectional view of the connecting rod, timing belt, and air supply components. Figure 7 This is a cross-sectional view of the connecting rod and the stirring component; Figure 8 This is a schematic diagram of the connecting rod and the stirring component.

[0018] The labels in the attached diagram are: 100. Aeration tank; 200. Aeration assembly; 201. Main pipe; 202. Branch pipe; 203. Aeration pipe; 204. Aeration head; 2041. Cone; 2042. Protruding pipe; 2043. Side aeration hole; 2044. Bottom aeration hole; 300. Mixing assembly; 301. Synchronous belt; 302. Connecting rod; 3021. Guide hole; 3022. Pin; 303. Mixing component; 3031. Scraper seat; 3032. Pneumatic motor; 3033. Pushing blade; 3034. Pushing air hole; 3035. Rotating blade; 304. Air supply component; 3041. Side seat; 3042. Conveyor belt; 3043. Side connecting nozzle; 3044. Connection port. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Reference Figures 1-8 An aeration tank assembly for wastewater treatment includes an aeration tank 100, an aeration component 200, and a stirring component 300. The aeration component 200 is used to aerate the aeration tank 100, providing a good living environment for aerobic microorganisms in activated sludge. The stirring component 300 is used to ensure that the aerobic microorganisms in activated sludge are evenly distributed in the aeration tank 100, and that the aerobic microorganisms are in a good living environment during the process.

[0021] Reference Figure 3 The aeration component 200 includes a main pipe 201 located above the aeration tank 100. The main pipe 201 extends parallel to the length direction of the aeration tank 100. One end of the main pipe 201 is closed, and the other end is connected to a blower. The blower is a technology that can be implemented in the prior art and is not shown in the figure.

[0022] Aeration components are installed on the main pipe 201, and several aeration components are arranged in an array along the extension direction of the main pipe 201.

[0023] The aeration component comprises a branch pipe 202 connected with the main pipe 201, the extension direction of the branch pipe 202 is parallel to the width direction of the aeration tank 100, and the branch pipe 202 is arranged on both sides of the main pipe 201 along the center line of the main pipe 201.

[0024] The branch pipe 202 is provided with an aeration unit, and the aeration unit is arranged in an array along the extension direction of the branch pipe 202.

[0025] The aeration unit comprises an aeration pipe 203 arranged vertically, and the upper end of the aeration pipe 203 is connected with the branch pipe 202 and the aeration pipe 203 is located below the branch pipe 202.

[0026] The lower end of the aeration pipe 203 is provided with an aeration head 204, the aeration head 204 extends into the aeration tank 100 and is close to the bottom of the aeration tank 100.

[0027] Further, referring to Figure 4 , the aeration head 204 comprises a conical body 2041, the inside of the conical body 2041 is hollow, the diameter of the conical body 2041 decreases from top to bottom, the upper end of the conical body 2041 is provided with a connecting hole, the upper hole of the connecting hole is provided with a convex pipe 2042, the convex pipe 2042 is movably connected with the lower end of the aeration pipe 203, the outer circular surface of the conical body 2041 is provided with a side aeration hole 2043, the side aeration hole 2043 is arranged in an array along the circumferential direction of the conical body 2041, and the lower end of the conical body 2041 is provided with a bottom aeration hole 2044.

[0028] The working process of the aeration assembly 200 is specifically as follows: The air blower operates, the air flows into the aeration head 204 through the main pipe 201, the branch pipe 202 and the aeration pipe 203, and enters the aeration tank 100 through the side aeration hole 2043 and the bottom aeration hole 2044, so as to realize the aeration purpose; Further, since the convex pipe 2042 is movably connected with the aeration pipe 203, and the side aeration hole 2043 is in the shape of an arc hole, under the reaction force of the air sprayed through the side aeration hole 2043, the conical body 2041 rotates, that is, the aeration head 204 rotates, which can further improve the aeration effect and make the oxygen distribution in the aeration tank 100 more balanced.

[0029] Referring to Figure 2 and Figure 5 , the stirring assembly 300 comprises a stirring component 303 located at the bottom of the aeration tank 100 and a traction component for pulling the stirring component 303 to move back and forth along the length direction of the aeration tank 100.

[0030] Referring to Figure 7 and Figure 8The stirring component 303 comprises a scraper seat 3031, the extending direction of the scraper seat 3031 is parallel to the width direction of the aeration tank 100, the two sides of the scraper seat 3031 along the length direction of the aeration tank 100 are arranged in an inclined manner and the distance between the two sides decreases along the vertical direction from bottom to top.

[0031] The scraper seat 3031 is hollow inside and is provided with a pneumatic motor 3032.

[0032] The two sides of the scraper seat 3031 arranged in an inclined manner are each provided with a pushing component, the pushing component comprises a pushing shaft, the axis direction of the pushing shaft is parallel to the width direction of the aeration tank 100, the outer circular surface of the pushing shaft is provided with a pushing blade 3033 along the radial direction, and further, the pushing blade 3033 is arranged with a plurality of pushing blades 3033 along the circumferential direction of the pushing shaft.

[0033] The pushing shaft is in the shape of a hollow shaft, the pushing shaft is in communication with the inner cavity of the scraper seat 3031, the inside of the pushing blade 3033 is hollow and in communication with the inner cavity of the pushing shaft, and the outer surface of the pushing blade 3033 is arranged with a plurality of pushing air holes 3034.

[0034] The upper surface of the scraper seat 3031 is provided with a stirring component, and further, the stirring component is arranged with a plurality of stirring components along the extending direction of the scraper seat 3031.

[0035] The stirring component comprises a stirring shaft arranged in a vertical manner, the outer circular surface of the stirring shaft is provided with a blade unit, the blade unit is arranged with a plurality of blade units along the axis direction of the stirring shaft, and the blade unit comprises a rotating blade 3035 arranged on the outer circular surface of the stirring shaft, and the rotating blade 3035 is arranged with a plurality of rotating blades 3035 along the circumferential direction of the stirring shaft.

[0036] Further, the pneumatic motor 3032 is in power connection with the pushing shaft and the stirring shaft, the pushing shaft and the stirring shaft are driven to rotate by the pneumatic motor 3032, and the power transmission route among the three is realized by using the prior art, which will not be described herein.

[0037] Further, when the pushing shaft rotates together with the pushing blade 3033, the pushing blade 3033 drags the object to move towards the upper surface of the scraper seat 3031, i.e. towards the stirring component.

[0038] Referring to Figure 6 and Figure 7 The dragging component comprises a bracket body arranged on one side of the aeration tank 100, the bracket body is provided with a synchronous belt 301, and the dragging direction of the synchronous belt 301 is parallel to the length direction of the aeration tank 100.

[0039] The upper surface of the scraper seat 3031 is provided with a connecting rod 302, one end of the connecting rod 302 extends into the scraper seat 3031 and communicates with the air inlet of the pneumatic motor 3032, the air outlet of the pneumatic motor 3032 communicates with the scraper seat 3031, and the discharged air is finally output through the pushing air hole 3034.

[0040] The other end of the connecting rod 302 is provided with a guide hole 3021 arranged vertically in the direction, and a pin rod 3022 is slidably arranged in the guide hole 3021, and the end of the pin rod 3022 is connected with the synchronous belt 301; therefore, the synchronous belt 301 is started, and can move with the pin rod 3022, and through the cooperation of the pin rod 3022 and the guide hole 3021, the connecting rod 302 can be pulled to reciprocate along the length direction of the aeration tank 100, and the connecting rod 302 pulls the stirring component 303 to reciprocate together.

[0041] The pneumatic motor 3032 is driven to operate by continuously supplied compressed air, and the supply mode has the following modes: First, a relatively long hose is directly arranged, one end of the hose is connected with the air inlet of the pneumatic motor 3032, and the other end communicates with the air compressor, but this way needs a long hose, and the hose follows the stirring component 303 to frequently and continuously reciprocate, which is easy to cause the hose to be knotted and worn out; Second, referring to Figure 5 , the side surface of the connecting rod 302 is provided with a connecting channel communicating with the air inlet of the pneumatic motor 3032, and the end of the connecting channel is located outside the aeration tank 100 and is connected with the air compressor through the air supply component 304.

[0042] Specifically, referring to Figure 6 , the air supply component 304 includes two side seats 3041 arranged opposite to each other, and a distance exists between the upper ends of the two side seats 3041, and the lower ends of the two side seats 3041 are connected, that is, the air supply area with an upper end opening and a lower end closed and a length direction parallel to the length direction of the aeration tank 100 is formed between the two side seats 3041.

[0043] A rotating roller is arranged between the two side seats 3041, the rotating roller is provided with two and is located at the two ends of the air supply area respectively, and a conveying belt 3042 is arranged between the two rotating rollers, and the upper surface of the conveying belt 3042 blocks the upper opening of the air supply area, so that the air supply area is in a closed state.

[0044] The upper surface of the conveying belt 3042 is provided with a connecting port 3044, and the upper hole of the connecting port 3044 is connected with the end of the connecting channel, so that the air supply area communicates with the air inlet of the pneumatic motor 3032.

[0045] The side of the side seat 3041 is provided with a side hole, and the side hole is provided with a side connecting nozzle 3043 at the hole opening, and the end of the side connecting nozzle 3043 is connected with an air compressor, which is not shown in the figure, so that the compressed air provided by the air compressor is transmitted to the pneumatic motor 3032 through the air supply area to make it run.

[0046] The working principle of the present application is: When the air blower runs, air flows into the aeration head through the main pipe, the branch pipe and the aeration pipe, and enters the aeration tank through the side aeration hole and the bottom aeration hole, and under the action of the reaction force, the cone body rotates, that is, the aeration head rotates, thereby realizing better aeration effect. At the same time: The present application constructs an integrated scheme of uniformly suspending activated sludge in the aeration tank by using a pneumatic driving device at the bottom of the aeration tank, and the technical advantage is that: Technical effect 1: By arranging a scraper seat which reciprocates along the length direction of the aeration tank at the bottom of the aeration tank, the inclined surface of the scraper seat can shovel the activated sludge at the bottom, which can effectively prevent the activated sludge from sinking to the bottom of the tank, causing anaerobic fermentation and producing odor, and causing the problem that the wastewater cannot be effectively treated. Technical effect 2: The present application supplies air through a unique pipeline and drives the stirring component to run by using a pneumatic motor, on the one hand, the air finally released by the pneumatic motor is part of the aeration, which further improves the aeration effect, on the other hand, when there is more activated sludge sinking to the bottom of the tank in a certain area, the resistance received by the pushing blade when pushing the sludge to the position of the rotating blade is greater after shoveling, so the load of the pneumatic motor is greater, and more compressed air is needed to drive the pushing blade, and finally more air does work to release and mix with the activated sludge pushed, to complete the adaptive aeration and provide a good living environment for the aerobic microorganisms in the activated sludge, and similarly, when there is less activated sludge sinking to the bottom of the tank in a certain area, the resistance received by the pushing blade when pushing the sludge to the position of the rotating blade is smaller after shoveling, so the load of the pneumatic motor is smaller, and less compressed air is needed to drive the pushing blade. In short, the present application can adaptively match the corresponding air volume with the mixed and blended activated sludge according to the amount of the activated sludge shovelled, so as to balance the oxygen supply of the unit amount of activated sludge. It should be noted that in the pneumatic motor technology, the torque generated by the internal air pressure of the pneumatic motor and the resistance torque exerted by the external load are in dynamic balance, when the load of the pneumatic motor increases, its speed begins to drop, which will be detected by the air pressure regulation system (such as a pressure reducing valve) or a more precise flow control valve, and the system will make a corresponding response, for example, increasing the opening of the inlet valve to allow more compressed air to enter the pneumatic motor at a higher speed to maintain the set speed, which can be achieved by the prior art and will not be described here. Technical effect 3: After the activated sludge is pushed to the rotating blade, it will be scattered and sprayed in all directions by the rotating rotating blade, so that the activated sludge is more evenly distributed in the aeration tank. Further, the more activated sludge is scooped up, the greater the resistance the rotating blade receives, and the slower the rotation speed will be, so that the large amount of activated sludge and the large amount of air have more time to contact, ensuring that the aerobic microorganisms in the activated sludge are in a good living environment.

[0047] The above is only a preferred embodiment of the present application, not any form of limitation on the present application, although the present application has been disclosed as above with a preferred embodiment, however, it is not intended to limit the present application, any person skilled in the art, without departing from the scope of the technical solution of the present application, can make some changes or modifications to the above disclosed technical content to make equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution content of the present application, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. An aeration tank assembly for wastewater treatment, comprising an aeration tank (100), characterized in that, It also includes an aeration component (200) and a stirring component (300); The mixing assembly (300) includes a mixing component (303) located at the bottom of the aeration tank (100) and a traction component for reciprocating the mixing component (303) along the length of the aeration tank (100); The stirring component (303) includes a scraper seat (3031), the extension direction of the scraper seat (3031) is parallel to the width direction of the aeration tank (100), the two sides of the scraper seat (3031) along the length direction of the aeration tank (100) are arranged at an inclination and the distance between them is vertical and decreases from bottom to top. The scraper seat (3031) is hollow inside and is equipped with a pneumatic motor (3032). Pushing elements are provided on both sides of the scraper seat (3031) which are arranged at an inclination. A stirring element is provided on the upper surface of the scraper seat (3031). Several stirring elements are arranged in an array along the extension direction of the scraper seat (3031). The pushing elements are used to pull the activated sludge scooped up by the scraper seat (3031) towards the stirring element. The pneumatic motor (3032) is used to drive the pusher and the agitator to rotate.

2. The aeration tank assembly for wastewater treatment according to claim 1, characterized in that, The pusher includes a pusher shaft, the axis of which is parallel to the width of the aeration tank (100), and pusher blades (3033) are arranged radially on the outer surface of the pusher shaft. Several pusher blades (3033) are arranged in an array along the circumferential direction of the pusher shaft. The push shaft is hollow and is connected to the inner cavity of the scraper seat (3031). The push blade (3033) is hollow and is connected to the inner cavity of the push shaft. The outer surface of the push blade (3033) is arrayed with several push air holes (3034). The push shaft and the pneumatic motor (3032) form a power connection.

3. The aeration tank assembly for wastewater treatment according to claim 1, characterized in that, The stirring component includes a vertically arranged stirring shaft, and blade units are provided on the outer circular surface of the stirring shaft. Several blade units are arranged in an array along the axial direction of the stirring shaft. Each blade unit includes a rotating blade (3035) arranged on the outer circular surface of the stirring shaft. Several rotating blades (3035) are arranged in an array along the circumferential direction of the stirring shaft. The pneumatic motor (3032) is connected to the stirring shaft.

4. An aeration tank assembly for wastewater treatment according to any one of claims 1-3, characterized in that, The traction component includes a support body set on one side of the aeration tank (100), and a timing belt (301) is provided on the support body. The traction direction of the timing belt (301) is parallel to the length direction of the aeration tank (100). A connecting rod (302) is provided on the upper surface of the scraper seat (3031). A guide hole (3021) with a vertically arranged guiding direction is provided at the upper end of the connecting rod (302). A pin (3022) is slidably provided in the guide hole (3021). The end of the pin (3022) is connected to the synchronous belt (301).

5. An aeration tank assembly for wastewater treatment according to claim 4, characterized in that, The lower end of the connecting rod (302) extends into the scraper seat (3031) and is connected to the air inlet of the pneumatic motor (3032). The air outlet of the pneumatic motor (3032) is connected to the scraper seat (3031). The side of the connecting rod (302) is provided with a connecting channel that communicates with the air inlet of the pneumatic motor (3032).

6. An aeration tank assembly for wastewater treatment according to claim 5, characterized in that, A flexible hose is installed at the end of the connecting channel, and an air compressor is connected to the end of the flexible hose.

7. An aeration tank assembly for wastewater treatment according to claim 5, characterized in that, An air supply component (304) is provided at the end of the connecting channel. The air supply component (304) includes two side seats (3041) arranged facing each other. There is a distance between the upper ends of the two side seats (3041), and the lower ends of the two side seats (3041) are connected. An air supply area is formed between the two side seats (3041) with an open upper end, a closed lower end, and a length direction parallel to the length direction of the aeration tank (100). A rotating roller is provided between the two side seats (3041). There are two rotating rollers located at both ends of the air supply area. A conveyor belt (3042) is provided between the two rotating rollers. The upper surface of the conveyor belt (3042) blocks the upper opening of the air supply area. The upper surface of the conveyor belt (3042) is provided with a connection port (3044), and the upper opening of the connection port (3044) is connected to the end of the connection channel; The side seat (3041) has a side hole on its side, and a side connecting nozzle (3043) is provided at the opening of the side hole. An air compressor is connected to the end of the side connecting nozzle (3043).

8. An aeration tank assembly for wastewater treatment according to claim 1 or 5, characterized in that, The aeration assembly (200) includes a main pipe (201) located above the aeration tank (100). The main pipe (201) extends parallel to the length of the aeration tank (100). One end of the main pipe (201) is closed and the other end is connected to a blower. Aeration components are installed on the main pipe (201), and several aeration components are arranged in an array along the extension direction of the main pipe (201); The aeration component includes a branch pipe (202) connected to the main pipe (201). The extension direction of the branch pipe (202) is parallel to the width direction of the aeration tank (100). There are two branch pipes (202) and they are located on both sides of the main pipe (201) along its own center line. An aeration unit is provided on the branch pipe (202), and several aeration units are arranged in an array along the extension direction of the branch pipe (202); The aeration unit includes an aeration pipe (203) arranged vertically. The upper end of the aeration pipe (203) is connected to the branch pipe (202) and the aeration pipe (203) is located below the branch pipe (202). An aeration head (204) is provided at the lower end of the aeration pipe (203). The aeration head (204) extends into the aeration tank (100) and is close to the bottom of the aeration tank (100).

9. An aeration tank assembly for wastewater treatment according to claim 8, characterized in that, The aeration head (204) includes a cone (2041), which is hollow inside. The diameter of the cone (2041) decreases from top to bottom. A connecting hole is provided at the upper end of the cone (2041). A protruding tube (2042) is provided at the upper opening of the connecting hole. The protruding tube (2042) is movably connected to the lower end of the aeration pipe (203). Side aeration holes (2043) are provided on the outer circular surface of the cone (2041). Several side aeration holes (2043) are arranged in an array along the circumference of the cone (2041). Bottom aeration holes (2044) are provided at the lower end of the cone (2041).

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