Ventilation and aeration system suitable for underground sewage treatment plant

Abstract

The utility model discloses a ventilation and aeration system suitable for an underground sewage treatment plant, the ventilation and aeration system comprises an aeration mechanism, an air supply mechanism, an exhaust mechanism and a cleaning mechanism, the aeration mechanism comprises an aeration pipe and an aeration tank, and an outlet of the aeration pipe extends to the bottom of the aeration tank; the air supply mechanism is used for ventilating and supplying air to the aeration pipe; the exhaust mechanism is communicated with the aeration tank and is used for exhausting waste gas in the aeration tank; the cleaning mechanism comprises a scraping plate and a driving assembly, the scraping plate is slidably connected into the aeration pipe in the length direction of the aeration pipe, and the driving assembly is arranged in the aeration tank and used for driving the scraping plate to slide in a reciprocating mode. Dirt on the inner wall of the aeration pipe can be scraped, normal circulation of air is guaranteed, manual cleaning cost is reduced, meanwhile, the aeration pipe can be cleaned in time, the service life of the aeration pipe can be prolonged, and equipment replacement and maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment, specifically to a ventilation and aeration system suitable for underground wastewater treatment plants. Background Technology

[0002] In recent years, due to the scarcity of land resources, rapid urbanization, and increasing environmental demands from nearby residents, underground wastewater treatment plants have gained popularity due to their small footprint, low pollution levels, and intensive and ecological characteristics. Unlike traditional surface-extending wastewater treatment plants, underground plants employ a three-dimensional, stacked design, typically grouping all structures into underground enclosures with two levels. The second level houses the structures and utility tunnels, while the first level contains equipment and operational / inspection areas. The first level enclosure contains only essential maintenance, fire protection, and traffic access, with no excessive green spaces or isolation zones, thus saving land. Furthermore, its underground location and enclosed nature allow for the complete absorption and treatment of waste gas, and minimizes the impact of mechanical vibrations and noise on the normal lives of surface residents. The construction of underground wastewater treatment plants organically integrates underground wastewater treatment with surface ecological landscapes and wetland greening, aligning with the current trend of ecological complex development.

[0003] Among related technologies, a ventilation and aeration system for underground wastewater treatment plants that can reduce operating energy consumption has been proposed. This system includes an air supply system for ventilating the underground space, a blower aeration system for supplying oxygen to the aeration tank, a deodorization system for treating generated odorous gases, and an exhaust system for discharging waste gases from the underground space. The air supply system is connected to the air supply shaft of the underground fire compartment via an air supply duct, and the exhaust system is connected to the exhaust shaft of the fire compartment via an exhaust duct. The fire compartment is connected to the blower aeration system via an air intake duct. The air inlet of the air system is connected, the exhaust outlet of the blower aeration system is connected to the aeration tank, and the upper space above the water surface of the aeration tank and non-aeration tank is connected to the air inlet of the deodorization system. The blower aeration system includes an air inlet corridor, sound-absorbing louvers, air inlet pipes, blowers, aeration pipes, and an aeration tank. The air inlet corridor is located in the fire compartment. Sound-absorbing louvers are installed at the air inlet of the air inlet corridor. The air outlet of the air inlet corridor is connected to the aeration pipes through the air inlet pipes. The blower is installed on the air inlet pipes, and the end of the aeration pipes is located at the bottom of the aeration tank.

[0004] The aforementioned technologies have the following drawbacks: the aeration pipes are immersed in the sewage in the aeration tank for a long time, and the inner wall of the aeration pipes is prone to dirt buildup, which affects the exhaust efficiency of the aeration pipes and reduces the sewage treatment efficiency. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a ventilation and aeration system suitable for underground sewage treatment plants, which solves the technical problem that the inner wall of the aeration pipe is prone to dirt accumulation in the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this application provides a ventilation and aeration system suitable for underground sewage treatment plants, including an aeration mechanism, wherein the aeration mechanism includes an aeration pipe and an aeration tank, and the outlet of the aeration pipe extends to the bottom of the aeration tank.

[0007] An air supply mechanism, wherein the air supply mechanism is used to ventilate and supply air to the aeration pipe;

[0008] An exhaust mechanism, connected to the aeration tank, is used to discharge waste gas from the aeration tank; and...

[0009] The cleaning mechanism includes a scraper slidably connected to the aeration pipe along its length and a driving component. The driving component is located in the aeration tank and is used to drive the scraper to slide back and forth.

[0010] In some embodiments, the scraper includes a support and a plurality of scraper bodies. The support is slidably connected to the aeration pipe along its length. The plurality of scraper bodies are arranged around the support and slidably connected to the support. A spring is provided between the support and the scraper bodies. One end of the spring is connected to the support and the other end is connected to the scraper body. The spring is in a compressed state, and the spring causes the scraper bodies to tend to slide towards the inner wall of the aeration pipe.

[0011] In some embodiments, a buffer layer is provided at one end of the scraper body near the inner wall of the aeration pipe.

[0012] In some embodiments, the drive assembly includes an electric push rod disposed on the top wall of the aeration tank, the aeration pipe having a through hole, the output shaft of the electric push rod passing through the through hole, and the output shaft of the electric push rod being connected to a support.

[0013] In some embodiments, a sliding sealing gasket is provided on the inner wall of the through hole, and the sliding sealing gasket slides against the output shaft of the electric push rod.

[0014] In some embodiments, a waterproof cover is provided on the top wall of the aeration tank around the electric push rod.

[0015] In some embodiments, the air supply mechanism includes an air supply shaft and adjustable louvers, wherein the adjustable louvers are located at the outlet of the air supply shaft.

[0016] In some embodiments, the adjustable louvers are inclined.

[0017] In some embodiments, the aeration mechanism further includes a silencer, an air inlet channel, an air inlet pipe, a blower, and a non-aeration tank. The silencer is located at the inlet of the air inlet channel, the inlet of the air inlet channel is located on one side of the adjusting louvers, the outlet of the air inlet channel is connected to the inlet of the air inlet pipe, the outlet of the air inlet pipe is connected to the inlet of the blower, the outlet of the blower is connected to the inlet of the aeration pipe, and the non-aeration tank is located on one side of the aeration tank.

[0018] In some embodiments, the exhaust mechanism includes an exhaust gas collection pipe, an exhaust gas processor, and a tail gas emission tower. The inlet of the exhaust gas collection pipe is located at the top of the aeration tank and the non-aeration tank. The outlet of the exhaust gas collection pipe is connected to the inlet of the exhaust gas processor, and the outlet of the exhaust gas processor is connected to the inlet of the tail gas emission tower.

[0019] Compared with the prior art, the beneficial effects of this application include: under the action of the drive component, the scraper can slide back and forth inside the aeration pipe. When the scraper slides inside the aeration pipe, it can scrape off dirt, sediment or biofilm and other impurities on the inner wall of the aeration pipe, prevent the aeration pipe from being blocked, ensure normal air circulation, reduce the workload and cost of manual cleaning, and at the same time, timely cleaning of the aeration pipe can extend the service life of the aeration pipe and reduce the cost of equipment replacement and maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the ventilation and aeration system provided in this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of the aeration tank provided in this application;

[0022] Figure 3 This is a schematic diagram of the overall structure of the cleaning organization provided in this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Air supply mechanism; 11. Air supply shaft; 12. Adjustable louvers; 2. Aeration mechanism; 21. Aeration pipe; 22. Aeration tank; 23. Silencer; 24. Air inlet corridor; 25. Air inlet pipe; 26. Fan; 27. Non-aeration tank; 3. Exhaust mechanism; 31. Waste gas collection pipe; 32. Waste gas processor; 33. Tail gas emission tower; 4. Cleaning mechanism; 41. Scraper; 411. Support; 412. Scraper body; 413. Spring; 42. Buffer layer; 5. Drive assembly; 51. Electric push rod; 52. Through hole; 53. Sliding sealing gasket; 54. Waterproof cover. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] This application provides a ventilation and aeration system suitable for underground sewage treatment plants, the structure of which is as follows: Figure 1 - Figure 3 As shown, it includes an aeration mechanism 2, an air supply mechanism 1, an exhaust mechanism 3, and a cleaning mechanism 4.

[0027] The aeration mechanism 2 includes an aeration pipe 21 and an aeration tank 22, with the outlet of the aeration pipe 21 extending to the bottom of the aeration tank 22.

[0028] The air supply mechanism 1 is used to supply air to the aeration pipe 21.

[0029] The exhaust mechanism 3 is connected to the aeration tank 22 and is used to discharge the waste gas in the aeration tank 22.

[0030] The cleaning mechanism 4 includes a scraper 41 slidably connected to the aeration pipe 21 along its length and a drive assembly 5. The drive assembly 5 is located in the aeration tank 22 and is used to drive the scraper 41 to slide back and forth.

[0031] During operation, the air supply mechanism 1 provides air with a certain pressure and flow rate to the aeration mechanism 2, providing an oxygen source for the aeration process. The aeration pipe 21 receives air from the air supply mechanism 1 and transports it to the bottom of the aeration tank 22. The aeration tank 22 is the main site for wastewater aeration treatment. In the aeration tank 22, wastewater comes into full contact with air, and oxygen from the air dissolves into the wastewater, providing the necessary oxygen for the growth and metabolism of microorganisms. During the aeration process, volatile organic compounds, carbon dioxide, and other gases in the wastewater may be released, forming waste gas. The exhaust mechanism 3 collects this waste gas and discharges it into the atmosphere or performs further treatment. Under the action of the drive component 5, the scraper 41 can slide back and forth inside the aeration pipe 21. When the scraper 41 slides inside the aeration pipe 21, it can scrape away dirt, sediment, or biofilm and other impurities from the inner wall of the aeration pipe 21, preventing blockage and ensuring normal airflow.

[0032] In this application, under the action of the drive component 5, the scraper 41 can slide back and forth inside the aeration pipe 21. When the scraper 41 slides inside the aeration pipe 21, it can scrape off dirt, sediment or biofilm and other impurities on the inner wall of the aeration pipe 21, prevent the aeration pipe 21 from being blocked, ensure normal air circulation, reduce the workload and cost of manual cleaning, and at the same time, timely cleaning of the aeration pipe 21 can extend the service life of the aeration pipe 21 and reduce the cost of equipment replacement and maintenance.

[0033] To clean the dirt from the inner wall of aeration pipe 21, please refer to... Figure 3 In a preferred embodiment, the scraper 41 includes a support 411 and a plurality of scraper bodies 412. The support 411 is slidably connected to the aeration pipe 21 along its length. The plurality of scraper bodies 412 are arranged around the support 411 and slidably connected to the support 411. A spring 413 is provided between the support 411 and the scraper bodies 412. One end of the spring 413 is connected to the support 411 and the other end is connected to the scraper body 412. The spring 413 is in a compressed state, and the spring 413 causes the scraper body 412 to tend to slide towards the inner wall of the aeration pipe 21.

[0034] In use, when cleaning of the aeration pipe 21 is required, the drive assembly 5 starts working, driving the support 411 of the scraper 41 to slide along its length inside the aeration pipe 21. Since the support 411 and the scraper 412 are slidably connected, and the scraper 412 maintains a certain connection with the support 411 under the action of the spring 413, the movement of the support 411 will cause the scraper 412 to move together. When the scraper 412 contacts the inner wall of the aeration pipe 21, the spring 413 is compressed, and the elastic force of the spring 413 will press the scraper 412 tightly against the inner wall of the aeration pipe 21. After the scraper 412 is in close contact with the inner wall of the aeration pipe 21, the scraper 412 slides relative to the inner wall of the aeration pipe 21 as the support 411 continues to move. The edge of the scraper 412 scrapes away dirt, sediment, biofilm, and other impurities from the inner wall of the aeration pipe 21. Because multiple scraper bodies 412 are arranged around the support body 411, they can clean the inner wall of the aeration pipe 21 from all angles, ensuring that all parts of the aeration pipe 21 are effectively cleaned. The presence of the spring 413 allows the scraper bodies 412 to adapt to aeration pipes 21 with different diameters. When the diameter of the aeration pipe 21 changes slightly, the spring 413 can adjust the distance between the scraper bodies 412 and the support body 411 by compression or extension, so that the scraper bodies 412 can always fit tightly against the inner wall of the aeration pipe 21. At the same time, for uneven parts or areas with more dirt on the inner wall of the aeration pipe 21, the elasticity of the spring 413 allows the scraper bodies 412 to self-adjust to a certain extent, ensuring the cleaning effect.

[0035] To reduce the possibility of damage to the scraper 412 and aeration pipe 21, please refer to Figure 3 In a preferred embodiment, a buffer layer 42 is provided on one end of the scraper body 412 near the inner wall of the aeration pipe 21.

[0036] In use, firstly, the buffer layer 42 absorbs some of the impact force, reducing the impact of the scraper 412 on the inner wall of the aeration pipe 21 and lowering the risk of damage to the aeration pipe 21; secondly, the inner wall of the aeration pipe 21 may have uneven areas, and the buffer layer 42 can adapt to these uneven areas through its own deformation, ensuring that the scraper 412 maintains good contact with the inner wall of the aeration pipe 21 and improving the cleaning effect; thirdly, if the scraper 412 directly contacts the inner wall of the aeration pipe 21, it may scratch the inner wall surface during long-term cleaning, affecting the service life and performance of the aeration pipe 21. The buffer layer 42 is usually made of soft, wear-resistant material, which can prevent the scraper 412 from directly scratching the inner wall of the aeration pipe 21 and protect the integrity of the aeration pipe 21.

[0037] To drive the scraper 41 to slide back and forth, please refer to... Figure 2 In a preferred embodiment, the drive assembly 5 includes an electric push rod 51 disposed on the top wall of the aeration tank 22, the aeration pipe 21 is provided with a through hole 52, the output shaft of the electric push rod 51 passes through the through hole 52, and the output shaft of the electric push rod 51 is connected to the support 411.

[0038] In use, the motor-driven output shaft of the electric push rod 51 extends or retracts. Since the output shaft of the electric push rod 51 passes through the through hole 52 on the aeration pipe 21 and is connected to the support 411 of the scraper 41, when the output shaft extends, it pushes the support 411 to slide along its length within the aeration pipe 21. As the output shaft of the electric push rod 51 moves, the support 411 connected to the output shaft begins to slide within the aeration pipe 21. The movement of the support 411 causes multiple scrapers 412 arranged around its periphery to move together.

[0039] To improve the sealing performance of aeration pipe 21, please refer to... Figure 2 In a preferred embodiment, a sliding sealing gasket 53 is provided on the inner wall of the through hole 52, and the sliding sealing gasket 53 slides against the output shaft of the electric push rod 51.

[0040] During use, the aeration pipe 21 is typically filled with air or other gases during aeration. The presence of the sliding sealing gasket 53 effectively prevents gas from leaking out of the aeration pipe 21 through the through hole 52. When the output shaft slides within the sliding sealing gasket 53, the gasket maintains close contact with the output shaft, forming a dynamic sealing structure that prevents gas escape. In addition to preventing internal gas leakage, the sliding sealing gasket 53 also prevents external impurities, moisture, etc., from entering the aeration pipe 21. Especially in the environment of underground wastewater treatment plants, various pollutants and moisture may be present. Without the isolation provided by the sealing gasket, these external factors may adversely affect the aeration process and equipment within the aeration pipe 21. Furthermore, the material of the sliding sealing gasket 53 typically has a low coefficient of friction, which reduces frictional resistance during the movement of the output shaft, ensuring smooth extension and retraction. Simultaneously, the elasticity of the sealing gasket allows it to adapt to different speeds and directions of the output shaft, maintaining good sealing performance.

[0041] To reduce the possibility of water ingress into the electric actuator 51, please refer to... Figure 2 In a preferred embodiment, a waterproof cover 54 is provided on the top wall of the aeration tank 22 around the electric push rod 51.

[0042] During use, the wastewater in the aeration tank 22 will generate water vapor and splashing water droplets. The waterproof cover can prevent this water vapor and water droplets from splashing towards the electric actuator 51, preventing water vapor from entering the electric actuator 51. If water vapor enters the electric actuator 51, it may cause moisture damage to the motor, circuit and other components of the electric actuator 51, affecting the normal operation of the electric actuator 51.

[0043] To deliver air into aeration unit 2, please refer to... Figure 1 In a preferred embodiment, the air supply mechanism 1 includes an air supply shaft 11 and an adjustable louver 12, the adjustable louver 12 being disposed at the outlet of the air supply shaft 11.

[0044] In operation, the air supply shaft 11 guides external air to the location of the aeration unit 2. Due to the specific shape and layout of the air supply shaft 11, the airflow direction can be effectively controlled, ensuring that air is smoothly delivered to the area requiring aeration. Adjustable louvers 12 are installed at the outlet of the air supply shaft 11, and the airflow can be controlled by adjusting the angle of the louvers. When an increase in airflow is needed, the louvers can be opened to a larger angle, allowing more air to pass through the air supply shaft 11 into the aeration unit 2; when a decrease in airflow is needed, the louvers can be closed to a smaller angle, limiting the airflow.

[0045] To reduce the possibility of polluted air escaping, please refer to... Figure 1In a preferred embodiment, the adjustable louvers 12 are inclined.

[0046] When in use, the louvers 12 are tilted, which helps to block the polluted air in the aeration mechanism 2, reducing the possibility of polluted air overflowing from the aeration mechanism 2 and reducing pollution to the outside world.

[0047] For wastewater treatment, please refer to... Figure 1 In a preferred embodiment, the aeration mechanism 2 further includes a silencer 23, an air inlet channel 24, an air inlet pipe 25, a blower 26, and a non-aeration tank 27. The silencer 23 is located at the inlet of the air inlet channel 24, the inlet of the air inlet channel 24 is located on one side of the adjusting louver 12, the outlet of the air inlet channel 24 is connected to the inlet of the air inlet pipe 25, the outlet of the air inlet pipe 25 is connected to the inlet of the blower 26, the outlet of the blower 26 is connected to the inlet of the aeration pipe 21, and the non-aeration tank 27 is located on one side of the aeration tank 22.

[0048] During operation, air enters the inlet of the air inlet duct 24 under the guidance of the regulating louvers 12. The air inlet duct 24 is typically a relatively enclosed channel, its function being to guide airflow in a specific direction and to initially rectify the airflow, making it smoother. When air enters the air inlet duct 24, it first passes through the silencer 23. The main function of the silencer 23 is to reduce noise generated during airflow. In the aeration system, the operation of equipment such as the blower 26 generates significant noise; the silencer 23 reduces noise propagation and minimizes its impact on the surrounding environment by absorbing, reflecting, or scattering sound waves. The outlet of the air inlet duct 24 is connected to the inlet of the air inlet pipe 25. After flowing out of the air inlet duct 24, air enters the air inlet pipe 25. Air then enters the blower 26 from the outlet of the air inlet pipe 25. The blower 26 is a key piece of equipment in the aeration system, its function being to provide the power for airflow. The blower 26 generates negative pressure through rotating impellers, drawing in and pressurizing air before discharging it. The outlet of blower 26 is connected to the inlet of aeration pipe 21, allowing pressurized air to enter. Aeration pipes 21 are typically located at the bottom of aeration tank 22, and their function is to evenly release air into the aeration tank 22 in the form of small bubbles. Air is released from the outlet of aeration pipe 21 into the aeration tank 22, ensuring full contact with the wastewater. Oxygen from the air dissolves into the wastewater, providing the necessary oxygen for the growth and metabolism of microorganisms. Simultaneously, the aeration process also agitates the wastewater, ensuring thorough mixing of pollutants with microorganisms, promoting the degradation and removal of pollutants. A non-aeration tank 27 is located to one side of the aeration tank 22, and its function is to perform auxiliary wastewater treatment processes such as sedimentation and filtration. The non-aeration tank 27 works in conjunction with the aeration tank 22 to jointly complete the wastewater treatment task.

[0049] To expel exhaust gases, please refer to... Figure 1 In a preferred embodiment, the exhaust mechanism 3 includes an exhaust gas collection pipe 31, an exhaust gas processor 32, and a tail gas emission tower 33. The inlet of the exhaust gas collection pipe 31 is located at the top of the aeration tank 22 and the non-aeration tank 27. The outlet of the exhaust gas collection pipe 31 is connected to the inlet of the exhaust gas processor 32, and the outlet of the exhaust gas processor 32 is connected to the inlet of the tail gas emission tower 33.

[0050] During operation, wastewater treatment processes generate waste gas in both aeration tank 22 and non-aeration tank 27. This waste gas primarily includes volatile organic compounds (VOCs), carbon dioxide, and other gases, as well as some odorous gases that may be produced during aeration. The inlet of the waste gas collection pipe 31 is located at the top of both the aeration tank 22 and the non-aeration tank 27. This layout effectively collects waste gas escaping from the wastewater surface. Since waste gas is generally lighter than air, it naturally rises to the top of the tanks; therefore, installing a collection pipe at the top maximizes waste gas collection. The waste gas enters the waste gas processor 32 from the outlet of the waste gas collection pipe 31. The waste gas processor 32 purifies the waste gas, removing harmful substances and odors. The treated exhaust gas from the waste gas processor 32 enters the exhaust gas emission tower 33 from its outlet. The exhaust gas emission tower 33 discharges the treated exhaust gas into the atmosphere.

[0051] To better understand this application, the following is combined with... Figure 1 - Figure 3 The working principle of a ventilation and aeration system applicable to an underground wastewater treatment plant, as described in this application, is as follows: The air supply mechanism 1 provides air with a certain pressure and flow rate to the aeration mechanism 2, providing an oxygen source for the aeration process. The aeration pipe 21 receives air from the air supply mechanism 1 and transports it to the bottom of the aeration tank 22. The aeration tank 22 is the main location for wastewater aeration treatment. In the aeration tank 22, wastewater comes into full contact with air, and oxygen in the air dissolves into the wastewater, providing the necessary oxygen for the growth and metabolism of microorganisms. During the aeration process, volatile organic compounds, carbon dioxide, and other gases in the wastewater may be released, forming waste gas. The exhaust mechanism 3 collects this waste gas and discharges it into the atmosphere or performs further treatment. Under the action of the drive component 5, the scraper 41 can slide back and forth inside the aeration pipe 21. When the scraper 41 slides inside the aeration pipe 21, it can scrape away dirt, sediment, or biofilm and other impurities on the inner wall of the aeration pipe 21, preventing blockage and ensuring normal air circulation.

[0052] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A ventilation and aeration system suitable for underground sewage treatment plants, characterized in that, include: An aeration mechanism, comprising an aeration pipe and an aeration tank, wherein the outlet of the aeration pipe extends to the bottom of the aeration tank; An air supply mechanism, wherein the air supply mechanism is used to ventilate and supply air to the aeration pipe; An exhaust mechanism, connected to the aeration tank, is used to discharge waste gas from the aeration tank; and... The cleaning mechanism includes a scraper slidably connected to the aeration pipe along its length and a driving component. The driving component is located in the aeration tank and is used to drive the scraper to slide back and forth.

2. The ventilation and aeration system for underground sewage treatment plants according to claim 1, characterized in that, The scraper includes a support body and multiple scraper bodies. The support body is slidably connected to the inside of the aeration pipe along its length. The multiple scraper bodies are arranged around the support body and slidably connected to the support body. A spring is provided between the support body and the scraper bodies. One end of the spring is connected to the support body and the other end of the spring is connected to the scraper body. The spring is in a compressed state, and the spring causes the scraper bodies to tend to slide towards the inner wall of the aeration pipe.

3. The ventilation and aeration system for underground sewage treatment plants according to claim 2, characterized in that, A buffer layer is provided at one end of the scraper near the inner wall of the aeration pipe.

4. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 2, characterized in that, The drive assembly includes an electric push rod disposed on the top wall of the aeration tank. The aeration pipe is provided with a through hole, the output shaft of the electric push rod passes through the through hole, and the output shaft of the electric push rod is connected to the support.

5. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 4, characterized in that, A sliding sealing gasket is provided on the inner wall of the through hole, and the sliding sealing gasket slides against the output shaft of the electric push rod.

6. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 4, characterized in that, A waterproof cover is provided on the top wall of the aeration tank around the electric push rod.

7. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 1, characterized in that, The air supply mechanism includes an air supply shaft and adjustable louvers, with the adjustable louvers located at the outlet of the air supply shaft.

8. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 7, characterized in that, The adjustable louvers are set at an angle.

9. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 7, characterized in that, The aeration mechanism also includes a silencer, an air inlet channel, an air inlet pipe, a blower, and a non-aeration tank. The silencer is located at the inlet of the air inlet channel, which is located on one side of the regulating louvers. The outlet of the air inlet channel is connected to the inlet of the air inlet pipe, the outlet of the air inlet pipe is connected to the inlet of the blower, the outlet of the blower is connected to the inlet of the aeration pipe, and the non-aeration tank is located on one side of the aeration tank.

10. A ventilation and aeration system suitable for underground sewage treatment plants according to claim 9, characterized in that, The exhaust system includes an exhaust gas collection pipe, an exhaust gas processor, and a tail gas emission tower. The inlet of the exhaust gas collection pipe is located at the top of the aeration tank and the non-aeration tank. The outlet of the exhaust gas collection pipe is connected to the inlet of the exhaust gas processor, and the outlet of the exhaust gas processor is connected to the inlet of the tail gas emission tower.

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