Low-carbon environment-friendly sewage treatment system and treatment method thereof

Abstract

The invention relates to the technical field of biological aeration filter tanks, in particular to a low-carbon environment-friendly sewage treatment system and a treatment method thereof.The low-carbon environment-friendly sewage treatment system comprises a filter tank provided with a first air pump and further comprises a lifting assembly arranged on the inner wall of the top end of the filter tank, and a connecting pipe is arranged at the bottom end of the lifting assembly; a first air guide pipe is arranged in the lifting assembly, one end of the first air guide pipe is communicated with a first air pump and used for guiding air, the other end of the first air guide pipe is communicated with a connecting pipe, the bottom end of the connecting pipe is rotationally connected with a plurality of aeration pipes around the circle center of the connecting pipe, the center positions of the aeration pipes are communicated, and the aeration pipes are communicated with the connecting pipe. A plurality of aeration nozzles are symmetrically communicated with the right upper parts of the two ends of the aeration pipe and are used for vertically and firstly buying to the right upper part for aeration, transverse high-pressure nozzles are symmetrically communicated with the right lower parts of the two ends of the aeration pipe and are used for providing a power source for rotation of the aeration pipe, and inclined high-pressure nozzles are symmetrically communicated with the right lower parts of the two ends of the aeration pipe and are used for aerating the lower part of the aeration pipe.

Description

Technical Field

[0001] The invention relates to the technical field of biological aeration filter tanks, and in particular to a low-carbon and environmentally friendly sewage treatment system and a treatment method thereof. Background Art

[0002] Biological aeration filter (BAF) is a wastewater treatment technology that combines the advantages of filtration and biological treatment. In the BAF system, aerators and aeration tubes are key components that are responsible for providing oxygen to promote the growth of microorganisms and the degradation of organic matter.

[0003] For the bottom aeration device, there are often dead corners of aeration under the aeration pipes. First, it will cause uneven aeration, resulting in low sewage treatment efficiency. Second, the dead corners cannot be aerated for a long time, which is prone to accumulation of sludge, and then when accumulated to a certain extent, it will threaten the aeration holes. Moreover, for the bottom aeration device, it is often set at the bottom, and the gas floats to the surface in the form of bubbles, so the places where the bubbles have not passed will easily lead to uneven aeration.

[0004] Based on this, the present invention discloses a low-carbon and environmentally friendly sewage treatment system and a treatment method thereof. Summary of the invention

[0005] In order to solve the problems raised in the background technology, the purpose of the present invention is to provide a low-carbon and environmentally friendly sewage treatment system and a treatment method thereof, which cooperates with a first air pump, a first air guide pipe and a lifting component. The first air guide pipe introduces gas into the connecting pipe and transmits it to the aeration pipe through the connecting pipe, so that the aeration pipe can rotate along the center position of the circle, and the aeration nozzle aerates vertically upward. Secondly, the slider, the limit ring, the reset spring and the connecting pipe in the lifting component are cooperated to realize the up and down movement of the aeration pipe combined with the rotary aeration. Furthermore, the second air pump, the second air guide pipe and the longitudinal high-pressure nozzle are set, and the gas provided by the second air pump It is transmitted to the longitudinal high-pressure nozzle through the second air duct, generating an upward thrust, causing the aeration pipe to rise and rotate. The transverse high-pressure nozzle, oblique high-pressure nozzle and longitudinal high-pressure nozzle are arranged in different positions. The transverse high-pressure nozzle provides a greater tangential force to help the aeration pipe rotate. The oblique high-pressure nozzle provides auxiliary power for rotation while also enhancing the aeration capacity in the vertical direction. The automatic control mechanism of the lower controller and the upper controller triggers the controller when the slider moves up and down, and automatically adjusts the working state of the second air pump, making the aeration process automated and controllable, ultimately achieving the purpose of multi-dimensional aeration.

[0006] To achieve the above-mentioned purpose, a low-carbon and environmentally friendly sewage treatment system and treatment method thereof include a filter tank, wherein a first air pump is provided on the filter tank; Among them, it also includes a lifting component, which is arranged on the inner wall of the top end of the filter tank, and a connecting pipe is arranged at the bottom end of the lifting component. A first air guide pipe is arranged in the lifting component, one end of the first air guide pipe is connected to the first air pump for guiding air, and the other end is connected to the connecting pipe, and the bottom end of the connecting pipe is connected to a plurality of aeration pipes that rotate around its center position, and the center positions of the plurality of aeration pipes are connected to each other, the aeration pipes are connected to the connecting pipe, and a plurality of aeration nozzles are symmetrically connected directly above the two ends of the aeration pipes for aerating perpendicularly to the aeration pipes directly upward, horizontal high-pressure nozzles are symmetrically connected directly below the two ends of the aeration pipes for providing a power source for the rotation of the aeration pipes, and oblique high-pressure nozzles are symmetrically connected directly below the two ends of the aeration pipes for aerating the bottom of the aeration pipes.

[0007] As a further improvement of the present technical solution, the lifting assembly includes a lifting cylinder fixedly connected to the inner wall of the top end of the filter tank, the lifting cylinder is symmetrically provided with sliding grooves, a slider is slidably connected in the sliding groove, the slider is fixedly connected to one side of a limiting ring, the limiting ring is rotatably connected to the top end of the connecting pipe, a return spring is arranged in the lifting cylinder, the top end of the return spring is fixedly connected to the inner wall of the top end of the lifting cylinder, the bottom end of the return spring is fixedly connected to the top end of the limiting ring, the first air guide pipe is rotatably connected to the limiting ring, and the first air guide pipe is communicated with the connecting pipe through the limiting ring.

[0008] As a further improvement of the present technical solution, a second air pump is provided above the filter tank, a second air duct is provided inside the first air duct, and longitudinal high-pressure nozzles are provided directly below both ends of the aeration tubes to provide a power source for the aeration tubes to slide upward. The longitudinal high-pressure nozzle is connected to one end of the second air duct, and the other end of the second air duct is connected to the second air pump.

[0009] As a further improvement of the technical solution, lower controllers are provided at the bottom ends of both sides of the chute, and upper controllers are provided above the lower controllers on both sides of the chute. The lower controllers are used to control the second air pump to start aeration, and the upper controllers are used to control the second air pump to shut down aeration.

[0010] Preferably, the ends of the lower controller and the upper controller exposed in the slide groove are both wedge-shaped structures, and both satisfy that the slider can squeeze the lower controller and the upper controller when sliding downward and upward respectively.

[0011] As a further improvement of the present technical solution, the position of the lower controller is set to cause the slider to squeeze and trigger the lower controller to start the second air pump after the reset spring is reset, and the position of the upper controller is set to a position where the impact force of the plurality of longitudinal high-pressure nozzles and the oblique high-pressure nozzles is balanced with the elastic force of the compressed reset spring, and the slider can squeeze and trigger the upper controller to shut down the second air pump.

[0012] Preferably, the first air duct and the second air duct arranged therein are both made of a retractable hose material, and the retractable length is adapted to the distance between the lower controller and the upper controller.

[0013] As a further improvement of the present technical solution, the transverse high-pressure nozzle is located at the outermost end of the aeration pipe away from its center position compared to the oblique high-pressure nozzle and the longitudinal high-pressure nozzle, the longitudinal high-pressure nozzle is located near the center position of the aeration pipe, and the oblique high-pressure nozzle is located in the middle position between the transverse high-pressure nozzle and the longitudinal high-pressure nozzle.

[0014] A working method for a low-carbon and environmentally friendly sewage treatment system as described above, the steps are as follows: S1, in an initial state, the first air pump is started, and then the slider contacts and squeezes the lower controller under the elastic force of the return spring, triggering the start of the second air pump, and the longitudinal high-pressure nozzle works; S2. A number of aeration pipes begin to rotate under the action of the horizontal high-pressure nozzles and the oblique high-pressure nozzles, and begin to move upward synchronously under the action of the longitudinal high-pressure nozzles and the oblique high-pressure nozzles; S3, the slider rises until it contacts and squeezes the upper controller and then stops, triggering the second air pump to shut down, and then the bus high-pressure nozzle stops working. Under the action of the return spring, the aeration pipe begins to descend and descends to the lower controller, and then the above S1 and S2 steps are repeated.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this low-carbon and environmentally friendly sewage treatment system and treatment method, the lifting cylinder, slider, reset spring and other components in the lifting assembly are linked to the aeration pipe, so that the aeration pipe can rotate simultaneously during the lifting process, which is beneficial to the multi-dimensional movement of the aeration pipe in the filter tank, thereby significantly improving the uniformity of aeration and avoiding the problem of uneven aeration in traditional aeration devices; secondly, the aeration nozzles, horizontal high-pressure nozzles, oblique high-pressure nozzles and longitudinal high-pressure nozzles arranged on the aeration pipe cooperate with each other, among which the oblique high-pressure nozzles are arranged downward at a 45-degree angle to provide aeration for the bottom of the aeration pipe and assist in rotation and ascent. This multi-directional aeration method not only solves the problem of aeration dead corners below the aeration pipe, but also further enhances the uniformity and efficiency of aeration through rotation and ascending movements.

[0016] 2. In this low-carbon and environmentally friendly sewage treatment system and treatment method, the intelligent control of the second air pump is realized through the setting of the lower controller and the upper controller. When the slider slides down to the position of the lower controller, the second air pump is started, and the thrust of the longitudinal high-pressure nozzle causes the aeration tube to rise and rotate; when the slider rises to contact with the upper controller, the second air pump is turned off, and the aeration tube descends under the action of the reset spring and its own weight, thus realizing the rise and fall of several aeration tubes, replacing the single-direction and static aeration of the traditional aeration tube; secondly, the horizontal high-pressure nozzle is located at the outermost end of the aeration tube, providing the maximum tangential force to promote rotation, and the longitudinal high-pressure nozzle is close to the center position, providing the main rising power for the aeration tube, and the oblique high-pressure nozzle is located between the two, which assists both rotation and ascent, and solves the problem of aeration dead corners below. This layout optimizes the aeration effect, reduces aeration dead corners, and improves aeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the lifting assembly of the present invention; Figure 3 It is a structural schematic diagram of the aeration tube of the present invention; Figure 4 It is a structural cross-sectional view of the lifting assembly of the present invention; Figure 5 for Figure 4 A magnified view of the structure at center A; Figure 6 for Figure 4 A magnified view of the structure at point B.

[0018] The meaning of each number in the figure is: 1. Filter tank; 2. First air pump; 3. Second air pump; 4. First air duct; 5. Second air duct; 6. Lifting cylinder; 7. Sliding block; 8. Limiting ring; 9. Connecting pipe; 10. Reset spring; 11. Aeration pipe; 12. Aeration nozzle; 13. Horizontal high-pressure nozzle; 14. Oblique high-pressure nozzle; 15. Longitudinal high-pressure nozzle; 16. Lower controller; 17. Upper controller; 18. Slide. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The existing bottom aeration device is prone to the problem that aeration cannot be carried out below the aeration pipe, and secondly, the gas cannot pass through the place, resulting in uneven aeration.

[0021] To this end, the present invention provides a low-carbon and environmentally friendly sewage treatment system and treatment method thereof, see Figure 1 As shown, it includes a filter tank 1, and a first air pump 2 is arranged on the filter tank 1.

[0022] For details, see Figure 2-Figure 3 As shown, it also includes a lifting component, which is arranged on the inner wall of the top end of the filter tank 1, and a connecting pipe 9 is arranged at the bottom end of the lifting component. A first air guide pipe 4 is arranged in the lifting component, and one end of the first air guide pipe 4 is connected to the first air pump 2 for air guiding, and the other end is connected to the connecting pipe 9. The bottom end of the connecting pipe 9 is connected with a plurality of aeration pipes 11 that rotate around its center position, and the center positions of the plurality of aeration pipes 11 are connected to each other. The aeration pipes 11 are connected to the connecting pipe 9, and a plurality of aeration nozzles 12 are symmetrically connected directly above both ends of the aeration pipe 11 for aerating the aeration pipe 11 vertically upward, and horizontal high-pressure nozzles 13 are symmetrically connected directly below both ends of the aeration pipe 11 for providing a power source for the rotation of the aeration pipe 11, and oblique high-pressure nozzles 14 are symmetrically connected directly below both ends of the aeration pipe 11 for aerating the lower part of the aeration pipe 11, and the angle of the oblique high-pressure nozzles 14 here is set at an oblique downward angle of 45 degrees.

[0023] Among them, see Figure 4-Figure 6 As shown, the lifting assembly includes a lifting cylinder 6 fixedly connected to the inner wall of the top end of the filter tank 1, and a slide groove 18 is symmetrically opened in the lifting cylinder 6. A slider 7 is slidably connected in the slide groove 18, and the slider 7 is fixedly connected to one side of a limiting ring 8. The limiting ring 8 is rotatably connected to the top of the connecting pipe 9. A reset spring 10 is arranged in the lifting cylinder 6, and the top of the reset spring 10 is fixedly connected to the inner wall of the top end of the lifting cylinder 6, and the bottom of the reset spring 10 is fixedly connected to the top of the limiting ring 8. The first air guide pipe 4 is rotatably connected to the limiting ring 8, and the first air guide pipe 4 is connected to the connecting pipe 9 through the limiting ring 8. In addition, it should be supplemented that Figure 4 It can be seen that the first air guide tube 4 and the second air guide tube 5 arranged therein are both made of a retractable hose material.

[0024] Further, by Figure 1 and Figure 2 As shown, a second air pump 3 is also provided above the filter tank 1, a second air duct 5 is also provided in the first air duct 4, and longitudinal high-pressure nozzles 15 are provided directly below both ends of the aeration tubes 11 to provide a power source for the aeration tubes 11 to slide upward. The longitudinal high-pressure nozzle 15 is connected to one end of the second air duct 5, and the other end of the second air duct 5 is connected to the second air pump 3.

[0025] Furthermore, lower controllers 16 are provided at the bottom ends of both sides of the chute 18, and upper controllers 17 are provided above the lower controllers 16 on both sides of the chute 18. The lower controller 16 is used to control the second air pump 3 to start aeration, and the upper controller 17 is used to control the second air pump 3 to stop aeration. It is worth mentioning that the ends of the lower controller 16 and the upper controller 17 exposed in the chute 18 are both wedge-shaped structures, and both satisfy that the slider 7 can squeeze the lower controller 16 and the upper controller 17 when sliding downward and upward, respectively. Figure 5 and Figure 6 The specific shape is used as a reference, that is, when the slider 7 slides upward, the wedge-shaped structure of the upper controller 17 is an inclined surface facing downward, and when the slider 7 slides downward, the wedge-shaped structure of the lower controller 16 is an inclined surface facing upward; and it should be noted that the position of the lower controller 16 is set after the reset spring 10 is reset, so that the slider 7 can squeeze and trigger the lower controller 16 to start the second air pump 3, and the position of the upper controller 17 is set at a position where the impact force of a number of longitudinal high-pressure nozzles 15 and the oblique high-pressure nozzle 14 is balanced with the elastic force of the compressed reset spring 10, and the slider 7 can satisfy the squeeze triggering of the upper controller 17 to close the second air pump 3; in addition, the retractable length of the first air guide tube 4 and the second air guide tube 5 therein is adapted to the distance between the lower controller 16 and the upper controller 17, so that the setting can ensure that when the slider 7 is at the bottom, it will not pass over the lower controller 16, and can just start the second air pump 3, and then instantly start to rotate and rise upward through the force of the longitudinal high-pressure nozzle 15, which further increases the uniformity of aeration, so that the aeration tube 11 can both rise, It can also rotate to improve the uniformity of aeration in multiple dimensions. When the slider 7 is driven to the top, the rebound force of the return spring 10 and the oblique decomposition force of the longitudinal high-pressure nozzle 15 and the oblique high-pressure nozzle 14 reach a certain balance. Then, under the action of the return spring 10, the slider 7 triggers the upper controller 17, but the slider 7 can only reach the position of the upper controller 17 and trigger the upper controller 17. This position is the position where the rebound force of the return spring 10 and the oblique decomposition force of the longitudinal high-pressure nozzle 15 and the oblique high-pressure nozzle 14 reach a balance. position, and then the second air pump 3 is closed, and then the aeration pipe 11 begins to drive the limit ring 8 and the slider 7 to descend through the connecting pipe 9 under its own weight and the rebound force of the return spring 10. However, no matter in the process of rising or falling, the aeration nozzle 12, the horizontal high-pressure nozzle 13 and the oblique high-pressure nozzle 14 continue to work, because their connected aeration pump is not the same, so the aeration pipe 11 always keeps rotating aeration, coupled with the rising power provided by the longitudinal high-pressure nozzle 15 and the descending power provided by the return spring 10, multi-dimensional aeration is achieved.

[0026] In addition, attention should be paid to the specific position of each high-pressure nozzle just below one end of the aeration pipe 11. Figure 2It can be seen that the transverse high-pressure nozzle 13 is located at the outermost end of the aeration pipe 11 away from the center thereof, compared with the oblique high-pressure nozzle 14 and the longitudinal high-pressure nozzle 15. Thus, according to the physical principles such as the angular momentum principle, the transverse high-pressure nozzle 13 is arranged at the outermost end of the aeration pipe 11, which can provide a greater tangential force, and is convenient for providing a higher power source for the rotation of the aeration pipe 11; the longitudinal high-pressure nozzle 15 is arranged near the center of the aeration pipe 11, because the longitudinal high-pressure nozzle 15 is a power source for the aeration pipe 11 to rise, and due to the position of the connecting pipe 9, most of the center of gravity is concentrated in the center, which is conducive to the longitudinal high-pressure nozzle 15 to play an upward power role; and the oblique high-pressure nozzle 14 is located between the transverse high-pressure nozzle 13 and the longitudinal high-pressure nozzle 15. The middle position of the aeration pipe 11 is set in this way. According to the principle of force decomposition, the setting of 45 degrees downward can be divided into horizontal and vertical forces. The horizontal force provides auxiliary power for the rotation of the aeration pipe 11, and the vertical force provides auxiliary power for the rise of the aeration pipe 11. In addition, the direction of the airflow is finally set to solve the problem of aeration dead corners below the aeration pipe 11. The vertical downward aeration of the longitudinal high-pressure nozzle 15 and the rotation of the aeration pipe 11 can make up for the dead corner problem of aeration below the aeration pipe 11. It is worth noting that it is impossible to have no dead corners at all, but through the rotation of the aeration pipe 11, and the positional relationship and angle setting of the oblique high-pressure nozzle 14 and the longitudinal high-pressure nozzle 15, the dead corner problem can be greatly reduced compared with the traditional aeration device.

[0027] In addition, a working method for a low-carbon and environmentally friendly sewage treatment system is provided, and the steps are as follows: S1, in the initial state, the first air pump 2 is started, and then the slider 7 contacts and squeezes the lower controller 16 under the elastic force of the return spring 10, triggering the start of the second air pump 3, and the longitudinal high-pressure nozzle 15 works; S2, a plurality of aeration pipes 11 start to rotate under the action of the horizontal high-pressure nozzles 13 and the oblique high-pressure nozzles 14, and start to move upward synchronously under the action of the longitudinal high-pressure nozzles 15 and the oblique high-pressure nozzles 14; S3, the slider 7 rises until it contacts and squeezes the upper controller 17 and then stops, at which time the second air pump 3 is triggered to be turned off, and then the bus high-pressure nozzle 15 stops working. Under the action of the return spring 10, the aeration pipe 11 begins to descend and descends to the lower controller 16, and then the above steps S1 and S2 are repeated.

[0028] This effectively solves the problem that the existing bottom aeration device is prone to aeration failure below the aeration pipe, and secondly, the aeration is uneven due to the place where the gas cannot pass.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A low-carbon and environmentally friendly sewage treatment system, comprising a filter tank (1), wherein a first air pump (2) is arranged on the filter tank (1), and characterized in that: It also includes a lifting component, the lifting component is arranged on the inner wall of the top end of the filter tank (1), the bottom end of the lifting component is provided with a connecting pipe (9), a first air guide pipe (4) is provided in the lifting component, one end of the first air guide pipe (4) is connected to the first air pump (2) for guiding air, and the other end is connected to the connecting pipe (9), the bottom end of the connecting pipe (9) is connected to a plurality of aeration pipes (11) which are rotatable around the center position of the connecting pipe (9), and the center positions of the plurality of aeration pipes (11) are connected to each other. The aeration pipe (11) is connected to the connecting pipe (9), and a plurality of aeration nozzles (12) are symmetrically connected directly above both ends of the aeration pipe (11) for aerating the aeration pipe (11) vertically directly upward. Transverse high-pressure nozzles (13) are symmetrically connected directly below both ends of the aeration pipe (11) for providing a power source for the rotation of the aeration pipe (11). Oblique high-pressure nozzles (14) are symmetrically connected directly below both ends of the aeration pipe (11) for aerating the area below the aeration pipe (11).

2. The low-carbon and environmentally friendly sewage treatment system according to claim 1 is characterized by: The lifting assembly comprises a lifting cylinder (6) fixedly connected to the inner wall of the top end of the filter tank (1), the lifting cylinder (6) is symmetrically provided with slide grooves (18), a slider (7) is slidably connected in the slide groove (18), the slider (7) is fixedly connected to one side of a limiting ring (8), the limiting ring (8) is rotatably connected to the top end of the connecting pipe (9), a return spring (10) is arranged in the lifting cylinder (6), the top end of the return spring (10) is fixedly connected to the inner wall of the top end of the lifting cylinder (6), the bottom end of the return spring (10) is fixedly connected to the top end of the limiting ring (8), the first air guide pipe (4) is rotatably connected to the limiting ring (8), and the first air guide pipe (4) is connected to the connecting pipe (9) through the limiting ring (8).

3. The low-carbon and environmentally friendly sewage treatment system according to claim 2 is characterized by: A second air pump (3) is also provided above the filter tank (1), a second air guide pipe (5) is also provided inside the first air guide pipe (4), and longitudinal high-pressure nozzles (15) are provided directly below both ends of the aeration pipes (11) to provide a power source for the aeration pipes (11) to slide upwards. The longitudinal high-pressure nozzles (15) are connected to one end of the second air guide pipe (5), and the other end of the second air guide pipe (5) is connected to the second air pump (3).

4. The low-carbon and environmentally friendly sewage treatment system according to claim 3 is characterized by: Lower controllers (16) are provided at the bottom ends of both sides of the chute (18), and upper controllers (17) are provided above the lower controllers (16) on both sides of the chute (18). The lower controllers (16) are used to control the second air pump (3) to start aeration, and the upper controllers (17) are used to control the second air pump (3) to stop aeration.

5. The low-carbon and environmentally friendly sewage treatment system according to claim 4 is characterized by: The ends of the lower controller (16) and the upper controller (17) exposed in the slide groove (18) are both wedge-shaped structures, and both enable the slider (7) to squeeze the lower controller (16) and the upper controller (17) when sliding downward and upward, respectively.

6. The low-carbon and environmentally friendly sewage treatment system according to claim 5 is characterized by: The position of the lower controller (16) is set so that after the reset spring (10) is reset, the slider (7) can be squeezed to trigger the lower controller (16) to start the second air pump (3), and the position of the upper controller (17) is set at a position where the impact force of the plurality of longitudinal high-pressure nozzles (15) and the oblique high-pressure nozzles (14) is balanced with the elastic force of the reset spring (10) after compression, and the slider (7) can be squeezed to trigger the upper controller (17) to close the second air pump (3).

7. The low-carbon and environmentally friendly sewage treatment system according to claim 6 is characterized by: The first air guide tube (4) and the second air guide tube (5) arranged therein are both made of a retractable hose material, and the retractable length is adapted to the distance between the lower controller (16) and the upper controller (17).

8. The low-carbon and environmentally friendly sewage treatment system according to claim 3 is characterized by: The transverse high-pressure nozzle (13) is arranged at the outermost end of the aeration pipe (11) away from the center position thereof compared to the oblique high-pressure nozzle (14) and the longitudinal high-pressure nozzle (15); the longitudinal high-pressure nozzle (15) is arranged near the center position of the aeration pipe (11); and the oblique high-pressure nozzle (14) is arranged in the middle position between the transverse high-pressure nozzle (13) and the longitudinal high-pressure nozzle (15).

9. A working method for a low-carbon and environmentally friendly sewage treatment system as claimed in any one of claims 1 to 8, characterized in that: The method comprises the following steps: S1, in the initial state, the first air pump (2) is started, and then the slider (7) contacts and squeezes the lower controller (16) under the elastic force of the return spring (10), triggering the start of the second air pump (3), and the longitudinal high-pressure nozzle (15) works; S2, the plurality of aeration pipes (11) begin to rotate under the action of the horizontal high-pressure nozzles (13) and the oblique high-pressure nozzles (14), and synchronously begin to move upward under the action of the longitudinal high-pressure nozzles (15) and the oblique high-pressure nozzles (14); S3, the slider (7) rises until it contacts and squeezes the upper controller (17) and then stops, triggering the second air pump (3) to shut down, and then the bus high-pressure nozzle (15) stops working. Under the action of the return spring (10), the aeration pipe (11) starts to descend and descends to the lower controller (16), and then the above steps S1 and S2 are repeated.

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