An aerobic granular sludge-based continuous-flow sewage treatment system

Abstract

The application discloses an aerobic granular sludge-based continuous-flow sewage treatment system and belongs to the technical field of sewage treatment. The sewage treatment system comprises a reaction tank, a sewage inlet pipe communicated with one side of the bottom of the reaction tank, a drainage pipe fixedly arranged at the top end of the reaction tank, an aeration structure arranged in the reaction tank and a stirring structure, further comprises a vortex fan rotatably arranged in the sewage inlet pipe and close to the inside of the side of the reaction tank for being impacted by sewage, and a gas bag fixedly arranged in the inside of the outlet end of the drainage pipe for changing the size of the outlet of the drainage pipe. The aerobic granular sludge-based continuous-flow sewage treatment system can disperse the entering sewage to reduce the direct impact of the sewage flow speed on the aerobic granular sludge, and can adjust the length of time for the sewage to stay in the reaction tank according to the flow speed of the sewage by arranging the horizontal shaft and the reciprocating assembly, so that the sewage treatment effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, and particularly relates to a continuous flow sewage treatment system based on aerobic granular sludge. BACKGROUND

[0002] With the acceleration of industrialization and the improvement of urbanization level, the problem of sewage treatment is becoming increasingly serious. The treatment of sewage is not only the basis for ensuring water resources safety and ecological environment, but also the necessary measure for various emission standards. Although traditional sewage treatment methods, such as activated sludge method and oxidation ditch method, have achieved certain results in practical application, they still face problems such as low treatment efficiency, high energy consumption and poor running stability.

[0003] As a new type of sewage treatment technology, aerobic granular sludge technology has high reaction rate, small sludge yield, low energy consumption and good impact load capacity, so it has attracted widespread attention in the field of sewage treatment. In the aerobic granular sludge method, the granular sludge exists in the form of large particles in the reaction tank, and oxidizes the organic matter in the water to achieve the purpose of purifying water. Due to the good settling performance of the granular sludge, it can effectively remove pollutants in water in a short time, greatly improving the treatment efficiency.

[0004] However, in the existing aerobic granular sludge sewage treatment system, the sewage directly enters the reaction tank through the pipeline and reacts with the aerobic granular sludge. When the flow speed of the sewage is too fast, it will impact the aerobic granular sludge in the reaction tank, causing the sludge particles to disperse and break, reducing the stability of the sludge and the treatment effect. Moreover, when the flow speed of the sewage is too fast, the contact time between the sewage and the aerobic granular sludge is shortened, and the organic matter is not fully degraded, resulting in a decrease in treatment effect.

[0005] Therefore, the present application provides a continuous flow sewage treatment system based on aerobic granular sludge to solve the above problems. SUMMARY

[0006] The present application provides a continuous flow sewage treatment system based on aerobic granular sludge, which aims to solve the problems of the existing aerobic granular sludge sewage treatment system in the background art, such as the direct high-speed entry of sewage into the reaction tank impacting the sludge, causing the sludge to disperse and break, the contact time being shortened, and the organic matter not being fully degraded, thereby reducing the treatment effect.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a continuous flow sewage treatment system based on aerobic granular sludge, comprising a reaction tank, a sewage inlet pipe in communication with one side of the bottom of the reaction tank, a drainage pipe fixedly arranged at the top end of the reaction tank, an aeration structure and a stirring structure arranged in the reaction tank;

[0008] The wastewater treatment system also includes a vortex fan that is rotatably installed inside the wastewater inlet pipe near the reaction tank for being impacted by wastewater, an airbag that is fixedly installed inside the outlet end of the drain pipe for changing the size of the drain pipe outlet, and a suction structure installed on one side of the reaction tank and connected to the vortex fan and airbag for repeatedly expanding and contracting the airbag.

[0009] The suction structure includes a horizontal shaft rotatably connected to the sewage inlet pipe and fixedly coaxially with the turbine fan; air cylinders symmetrically arranged on the drain pipe and communicating with the air bladder for suction; and a reciprocating assembly located outside the sewage inlet pipe and connected to both ends of the horizontal shaft for transmitting the power of the turbine fan to the two air cylinders, causing them to repeatedly suction. Through the turbine fan, when sewage enters the sewage inlet pipe, it impacts the turbine fan, causing it to rotate. This rotation disperses the incoming sewage, reducing the direct impact on the aerobic granular sludge caused by excessively high sewage flow velocity, which is beneficial. The stable and efficient operation of aerobic granular sludge improves wastewater treatment. Furthermore, the dispersed wastewater can more evenly contact the aerobic granular sludge, increasing the contact area and reaction efficiency between wastewater and sludge. Additionally, the horizontal axis and reciprocating components convert the turbine's rotational power into the repeated expansion and contraction of airbags. This allows adjustment of the airbag expansion and contraction frequency when the water flow is too fast or too slow, thereby changing the frequency of the drain outlet's narrowing. This, in turn, adjusts the duration of wastewater retention in the reaction tank based on the wastewater flow rate, ensuring sufficient contact and reaction time between the wastewater and the aerobic granular sludge, further enhancing wastewater treatment effectiveness.

[0010] Preferably, to facilitate drainage, the drain pipe includes a filter plate fixedly installed at the top of the inside of the reaction tank, a sealing cover fixedly installed on the top of the filter plate, and a drain outlet opened on one side of the sealing cover, with the airbag fixedly installed inside the drain outlet; this design facilitates effective filtration and drainage of wastewater.

[0011] Preferably, to facilitate the transmission of turbofan power to the two air cylinder components, the reciprocating assembly includes a transmission bevel gear disposed outside the sewage inlet pipe and fixedly sleeved at the end of the horizontal shaft; a connecting gear rotatably disposed at the end of the transmission bevel gear away from the horizontal shaft and meshing with the transmission bevel gear; a connecting shaft rotatably connected to the side of the reaction tank away from the drain outlet and fixedly connected to the connecting gear; a rotating wheel fixedly connected to the top of the connecting shaft and located at the top of the sealing cover; an eccentric shaft fixedly connected to the rotating wheel; and a connecting rod rotatably connected to the top of the eccentric shaft and connected to the air cylinder component. Through the coordinated action of the transmission bevel gear, connecting gear, connecting shaft, rotating wheel, eccentric shaft, and connecting rod, a smooth power transmission from the turbofan to the air cylinder component is achieved, enabling the air bladder to stably and repeatedly expand and contract.

[0012] Preferably, to facilitate repeated inflation and deflation of the airbag, the air cylinder component includes a cylinder fixedly mounted on the top of the sealing cover, a piston that moves laterally within the cylinder, a push rod that extends laterally through the cylinder near the connecting rod and is fixedly connected to the piston, and a connecting pipe fixedly mounted on the cylinder away from the push rod and communicating with the cylinder and the airbag. The push rod is slidably connected to the cylinder, and the push rod is rotatably connected to the end of the connecting rod away from the eccentric shaft. This design allows the push rod to repeatedly push the piston, enabling repeated deflation and inhalation of the airbag.

[0013] Preferably, in order to improve the protection of components such as the sewage inlet pipe, transmission bevel gear, transmission bevel gear and connecting shaft, a protective box is fixedly connected to one side of the reaction tank corresponding to the sewage inlet pipe. The protective box covers the outside of the sewage inlet pipe, transmission bevel gear, transmission bevel gear and connecting shaft, and the top end of the connecting shaft passes through the protective box and is rotatably connected to the protective box. This design helps to reduce the damage to components caused by external environmental factors and extend the service life of the equipment.

[0014] Preferably, to achieve aeration, the aeration structure includes a fixed pipe fixedly installed at the bottom of the reaction tank, aerators fixedly connected to the fixed pipe and arranged in a linear array, an air inlet pipe passing through the side of the reaction tank corresponding to the drain pipe and communicating with the fixed pipe, and a blower located outside the reaction tank and communicating with the air inlet pipe. The air inlet pipe is fixedly connected to the reaction tank. Through the fixed pipe, aerators, air inlet pipe and blower, uniform and sufficient aeration is ensured in the reaction tank, which helps the aerobic granular sludge to fully contact and react with pollutants in the wastewater, thereby improving the wastewater treatment effect.

[0015] Preferably, in order to ensure the reaction contact between aerobic granular sludge and wastewater, the stirring structure includes a stirring shaft rotatably disposed in the reaction tank at a position corresponding to the position above the air inlet pipe, and stirring blades disposed in the reaction tank and fixedly connected to the stirring shaft; the stirring shaft and stirring blades can ensure that the aerobic granular sludge and wastewater are fully mixed and contacted in the reaction tank.

[0016] Preferably, in order to reduce energy consumption, the wastewater treatment system further includes a transmission belt structure connected to the stirring shaft and the blower for transmitting the power of the blower to the stirring shaft; by transmitting the power of the blower to the stirring shaft through the transmission belt structure, energy is effectively utilized and energy consumption is reduced.

[0017] Preferably, to facilitate the transmission of power from the blower to the stirring shaft, the transmission belt structure includes a fixed plate fixedly mounted on the reaction tank, a transmission shaft coaxially and fixedly connected to the fan blades of the air inlet pipe, transmission wheels respectively fixedly sleeved on the top ends of the transmission shaft and the stirring shaft, and a transmission belt mounted on the two transmission wheels. The top ends of both the transmission shaft and the stirring shaft are rotatably connected to the fixed plate, and the two transmission wheels are connected and transmit power through the transmission belt. Through the synergistic effect of the transmission shaft, transmission wheels, and transmission belt, efficient power transmission from the blower to the stirring shaft is achieved. This design ensures that the power generated by the blower can be fully and stably transmitted to the stirring shaft, thereby driving the stirring blades to perform efficient stirring operations.

[0018] This aerobic granular sludge continuous flow wastewater treatment system uses a turbine fan. When wastewater enters the wastewater inlet pipe, it impacts the turbine fan, causing it to rotate. This rotation disperses the incoming wastewater, reducing the direct impact on the aerobic granular sludge caused by excessively high wastewater flow velocity. This promotes the stable and efficient operation of the aerobic granular sludge, improving the wastewater treatment effect. At the same time, the dispersed wastewater can contact the aerobic granular sludge more evenly, thereby increasing the contact area and reaction efficiency between wastewater and sludge.

[0019] This aerobic granular sludge continuous flow wastewater treatment system, through the setting of a horizontal axis and reciprocating components, can convert the rotational power of the turbine fan into the repeated expansion and contraction of the airbag. When the water flow is too fast or too slow, the frequency of the airbag expansion and contraction can be adjusted, thereby changing the frequency of the drain outlet contraction. In turn, the length of time the wastewater stays in the reaction tank can be adjusted according to the speed of the wastewater flow, so as to ensure the contact reaction time between the wastewater and the aerobic granular sludge, and further improve the wastewater treatment effect.

[0020] This aerobic granular sludge continuous flow wastewater treatment system, through its transmission belt structure, ensures that the power generated by the blower can be fully and stably transmitted to the mixing shaft, thereby driving the mixing blades to perform efficient mixing operations and reducing energy consumption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a continuous flow wastewater treatment system based on aerobic granular sludge. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the internal structure of a continuous flow wastewater treatment system based on aerobic granular sludge.

[0023] Figure 3 This is a schematic diagram of a continuous flow wastewater treatment system based on aerobic granular sludge. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of an air extraction structure in a continuous flow wastewater treatment system based on aerobic granular sludge.

[0025] Figure 5 A cross-sectional view of an air extraction structure in a continuous flow wastewater treatment system based on aerobic granular sludge.

[0026] Figure 6 This is a schematic diagram of a transmission belt structure in a continuous flow wastewater treatment system based on aerobic granular sludge.

[0027] Figure 7 This is a cross-sectional view of a stirring structure in a continuous flow wastewater treatment system based on aerobic granular sludge.

[0028] In the picture:

[0029] 1. Reaction tank; 11. Protective casing;

[0030] 2. Sewage inlet pipe;

[0031] 3. Drain pipe; 31. Filter plate; 32. Sealing cover; 33. Drain outlet;

[0032] 4. Aeration structure; 41. Fixed pipe; 42. Aerator; 43. Air inlet pipe; 44. Blower;

[0033] 5. Stirring structure; 51. Stirring shaft; 52. Stirring blades;

[0034] 6. Turbofan;

[0035] 7. Airbags;

[0036] 8. Suction and suction structure; 81. Horizontal shaft; 82. Reciprocating assembly; 821. Transmission bevel gear; 822. Connecting gear; 823. Connecting shaft; 824. Rotating wheel; 825. Eccentric shaft; 826. Connecting rod; 83. Air cylinder component; 831. Cylinder body; 832. Push rod; 833. Piston; 834. Connecting pipe;

[0037] 9. Transmission belt structure; 91. Fixing plate; 92. Transmission shaft; 93. Transmission wheel; 94. Transmission belt. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Example 1

[0040] This embodiment provides a wastewater treatment system based on aerobic granular sludge continuous flow, such as... Figures 1-7 As shown, the wastewater treatment system includes a reaction tank 1, a wastewater inlet pipe 2 connected to one side of the bottom of the reaction tank 1, a drain pipe 3 fixedly installed at the top of the reaction tank 1, an aeration structure 4 and a stirring structure 5 installed in the reaction tank 1; the wastewater treatment system also includes a turbine fan 6 rotatably installed inside the wastewater inlet pipe 2 near the reaction tank 1 for being impacted by wastewater, an airbag 7 fixedly installed inside the outlet end of the drain pipe 3 for changing the size of the outlet of the drain pipe 3, and a suction air structure 8 installed on one side of the reaction tank 1 and connected to the turbine fan 6 and the airbag 7 for repeatedly expanding and contracting the airbag 7; the suction air structure 8 includes a horizontal shaft 81 rotatably connected to the wastewater inlet pipe 2 and fixedly coaxially connected to the turbine fan 6, air cylinders 83 symmetrically installed on the drain pipe 3 and connected to the airbag 7 for suction air from the airbag 7, and a reciprocating component 82 installed outside the wastewater inlet pipe 2 and connected to both ends of the horizontal shaft 81 for transmitting the power of the turbine fan 6 to the two air cylinders 83, so that the two air cylinders 83 repeatedly suction air.

[0041] In order to achieve drainage, the drainage pipe 3 includes a filter plate 31 fixedly installed at the top of the inside of the reaction tank 1, a sealing cover 32 fixedly installed on the top of the filter plate 31, and a drainage port 33 opened on one side of the sealing cover 32. The air bag 7 is fixedly installed inside the drainage port 33. When the sewage that has reacted with the aerobic granular sludge in the upper part of the reaction tank 1 reaches the position of the drainage pipe 3, it will be filtered by the filter plate 31 to reduce the amount of aerobic granular sludge and sewage dirt discharged from the drainage port 33 to the next process.

[0042] In operation, when wastewater enters the reaction tank 1 through the wastewater inlet pipe 2 and reacts with the aerobic granular sludge, the aeration structure 4 provides oxygen to the reaction tank 1 to maintain the activity of aerobic microorganisms. Simultaneously, the stirring structure 5 promotes thorough mixing of the wastewater and the aerobic granular sludge to improve reaction efficiency. However, when wastewater enters the wastewater inlet pipe 2, it impacts the turbine fan 6, causing it to rotate. Through the rotation of the turbine fan 6, the wastewater entering the reaction tank 1 from the wastewater inlet pipe 2 is dispersed, reducing the impact of the wastewater on the aerobic granular sludge in the reaction tank 1. Furthermore, because the turbine fan 6 is connected to the horizontal axis 81, and the horizontal axis 81... 1. The reciprocating component 82 is connected to the air cylinder component 83. When the turbine fan 6 is rotated by the impact of sewage, the reciprocating component 82 transmits the rotational power of the turbine fan 6 to the air cylinder component 83, so that the air cylinder component 83 repeatedly inflates and deflates the air bag 7. This allows the air bag 7 to repeatedly expand and contract, thereby adjusting the frequency of the opening of the drain pipe 3 to reduce according to the speed at which sewage flows into the sewage inlet pipe 2. This regulates the speed of sewage discharge, allowing the sewage to remain in the reaction tank 1 and react with the aerobic granular sludge. The reacted sewage is first filtered through the filter plate 31, then enters the sealing cover 32, and is discharged from the drain outlet 33.

[0043] Specifically, the reciprocating assembly 82 includes a transmission bevel gear 821 disposed outside the sewage inlet pipe 2 and fixedly sleeved at the end of the horizontal shaft 81; a connecting gear 822 rotatably disposed at the end of the transmission bevel gear 821 away from the horizontal shaft 81 and meshing with the transmission bevel gear 821; a connecting shaft 823 rotatably connected to the side of the reaction tank 1 away from the drain outlet 33 and fixedly connected to the connecting gear 822; a rotating wheel 824 fixedly connected to the top of the connecting shaft 823 and located at the top of the sealing cover 32; an eccentric shaft 825 fixedly connected to the rotating wheel 824; and a rotatably connected to the eccentric shaft 825. The connecting rod 826 at the top of the 25 and connected to the air cylinder component 83 includes a cylinder 831 fixedly installed at the top of the sealing cover 32, a piston 833 that moves laterally inside the cylinder 831, a push rod 832 that passes laterally through the cylinder 831 near the connecting rod 826 and is fixedly connected to the piston 833, and a connecting pipe 834 fixedly installed at the end of the cylinder 831 away from the push rod 832 and communicating with the cylinder 831 and the air bag 7. The push rod 832 is slidably connected to the cylinder 831, and the push rod 832 is rotatably connected to the end of the connecting rod 826 away from the eccentric shaft 825.

[0044] When sewage enters the sewage inlet pipe 2 and impacts the turbine fan 6, causing the turbine fan 6 to rotate, the turbine fan 6 will synchronously drive the horizontal shaft 81 to rotate. At this time, the transmission bevel gears 821 connected to both ends of the horizontal shaft 81 will also rotate synchronously. Since the transmission bevel gears 821 mesh with the connecting gears 822 on the corresponding connecting shaft 823, when the transmission bevel gears 821 rotate, the connecting shaft 823 will also rotate synchronously. Then, the connecting shaft 823 will drive the connected rotating wheel 824 to rotate. Since the eccentric shaft 825 is eccentrically set on the rotating wheel 824, the eccentric shaft 825 will also rotate as the rotating wheel 824 rotates. At this time, under the connection of the connecting rod 826, the eccentric shaft 825... The rotation of the piston rod 832 can be converted into the lateral reciprocating movement of the piston rod 832. When the piston rod 832 moves towards the end of the connecting pipe 834, the piston 833 will compress the air in the cylinder 831 to form a high-pressure area. The high-pressure gas will be delivered to the air bladder 7 through the rotating wheel 824, causing the air bladder 7 to expand. When the piston rod 832 moves in the opposite direction, the piston 833 will pull the air in the cylinder 831 to form a low-pressure area. The air in the air bladder 7 will be drawn into the cylinder 831 through the connecting pipe 834, causing the air bladder 7 to contract. Then, the frequency of expansion and contraction of the air bladder 7 can be used to change the frequency of the change in the size of the drain outlet 33, thereby realizing the adjustment of the drainage speed.

[0045] In addition, to improve the protection of components such as the sewage inlet pipe 2, the transmission bevel gear 821, and the connecting shaft 823, a protective box 11 is fixedly connected to one side of the reaction tank corresponding to the sewage inlet pipe 2. The protective box 11 covers the outside of the sewage inlet pipe 2, the transmission bevel gear 821, and the connecting shaft 823. The top end of the connecting shaft 823 passes through the protective box 11 and is rotatably connected to the protective box 11. The design of the protective box 11 can provide additional protection for components such as the inlet pipe 2, the transmission bevel gear 821, and the connecting shaft 823, which helps to reduce the damage caused to components such as the inlet pipe 2, the transmission bevel gear 821, and the connecting shaft 823 by external environmental factors and extend the service life of the equipment.

[0046] Furthermore, the aeration structure 4 includes a fixed pipe 41 fixedly installed at the bottom of the inside of the reaction tank 1, aerators 42 fixedly connected to the fixed pipe 41 and arranged in a linear array, an air inlet pipe 43 passing through one side of the corresponding drain pipe 3 of the reaction tank 1 and communicating with the fixed pipe 41, and a blower 44 set outside the reaction tank 1 and communicating with the air inlet pipe 43. The air inlet pipe 43 is fixedly connected to the reaction tank 1.

[0047] When the blower 44 is started, external oxygen is sent into the fixed pipe 41 through the air inlet pipe 43. Then, the oxygen is distributed in the fixed pipe 41 and flows to multiple aerators 42. The aerators 42 disperse the oxygen into a large number of tiny bubbles. As the bubbles rise, they drive the water to flow, so that the oxygen in the bubbles gradually dissolves into the sewage and mixes with the aerobic granular sludge, thus providing a suitable living environment for aerobic microorganisms.

[0048] Furthermore, the stirring structure 5 includes a stirring shaft 51 rotatably disposed in the reaction tank 1 at a position corresponding to the position above the air inlet pipe 43, and a stirring blade 52 disposed in the reaction tank 1 and fixedly connected to the stirring shaft 51.

[0049] When the stirring shaft 51 is started to rotate, the stirring blades 52 on the stirring shaft 51 will also rotate. When the stirring blades 52 rotate, they will push the sewage to form eddies or turbulence in the reaction tank 1. This flow state helps to break the stratification phenomenon in the sewage, so that the aerobic granular sludge can fully contact and react with the sewage, thereby improving the efficiency of sewage treatment.

[0050] Example 2

[0051] Unlike Embodiment 1, in order to facilitate the transmission of power from the blower 44 to the stirring shaft 51 and reduce energy consumption, the wastewater treatment system also includes a transmission belt structure 9 connected to the stirring shaft 51 and the blower 44 for transmitting power from the blower 44 to the stirring shaft 51. The transmission belt structure 9 includes a fixed plate 91 fixedly mounted on the reaction tank 1, a transmission shaft 92 coaxially fixedly connected to the fan blades of the air inlet pipe 43, transmission wheels 93 respectively fixedly sleeved on the top ends of the transmission shaft 92 and the stirring shaft 51, and a transmission belt 94 mounted on the two transmission wheels 93. The top ends of the transmission shaft 92 and the stirring shaft 51 are rotatably connected to the fixed plate 91, and the two transmission wheels 93 are connected and transmit power through the transmission belt 94.

[0052] When the fan 44 starts, the fan blades begin to rotate, which in turn drives the drive shaft 92, which is coaxially connected to it, to rotate as well. The rotation of the drive shaft 92 is transmitted to the drive belt 94 through the drive wheel 93 fixedly sleeved at its top. Since the two drive wheels 93 are connected and transmit power through the drive belt 94, when the drive wheel 93 connected to the drive shaft 92 rotates, the drive wheel 93 connected to the stirring shaft 51 will also rotate synchronously, so that the stirring shaft 51 can rotate synchronously. In turn, the stirring shaft 51 drives the stirring blades 52 connected to it to rotate together, producing a stirring effect.

[0053] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A wastewater treatment system based on aerobic granular sludge continuous flow, comprising a reaction tank (1), a wastewater inlet pipe (2) connected to one side of the bottom of the reaction tank (1), a drain pipe (3) fixedly installed at the top of the reaction tank (1), an aeration structure (4) and a stirring structure (5) installed in the reaction tank (1). Its features are: The wastewater treatment system also includes a vortex fan (6) rotatably installed inside the wastewater inlet pipe (2) near the reaction tank (1) for being impacted by wastewater, an airbag (7) fixedly installed inside the outlet end of the drain pipe (3) for changing the size of the outlet of the drain pipe (3), and a suction structure (8) installed on one side of the reaction tank (1) and connected to the vortex fan (6) and the airbag (7) for repeatedly expanding and contracting the airbag (7). The suction structure (8) includes a horizontal shaft (81) rotatably connected to the sewage inlet pipe (2) and coaxially fixedly connected to the turbine fan (6), an air cylinder (83) symmetrically arranged on the drain pipe (3) and connected to the airbag (7) for suctioning air from the airbag (7), and a reciprocating assembly (82) arranged outside the sewage inlet pipe (2) and connected to both ends of the horizontal shaft (81) for transmitting the power of the turbine fan (6) to the two air cylinders (83) so that the two air cylinders (83) repeatedly suction air. The drain pipe (3) includes a filter plate (31) fixedly installed at the top of the inside of the reaction tank (1), a sealing cover (32) fixedly installed on the top of the filter plate (31), and a drain outlet (33) opened on one side of the sealing cover (32). The airbag (7) is fixedly installed inside the drain outlet (33). The reciprocating assembly (82) includes a transmission bevel gear (821) disposed outside the sewage inlet pipe (2) and fixedly sleeved at the end of the horizontal shaft (81); a connecting gear (822) rotatably disposed at one end of the transmission bevel gear (821) away from the horizontal shaft (81) and meshing with the transmission bevel gear (821); a connecting shaft (823) rotatably connected to the side of the reaction tank (1) away from the drain outlet (33) and fixedly connected to the connecting gear (822); a rotating wheel (824) fixedly connected to the top of the connecting shaft (823) and located at the top of the sealing cover (32); an eccentric shaft (825) fixedly connected to the rotating wheel (824); and a connecting rod (826) rotatably connected to the top of the eccentric shaft (825) and connected to the gas cylinder (83). The reaction tank (1) is fixedly connected to a protective box (11) on one side corresponding to the sewage inlet pipe (2). The protective box (11) covers the outside of the sewage inlet pipe (2), the transmission bevel gear (821), the connecting gear (822) and the connecting shaft (823). The top end of the connecting shaft (823) passes through the protective box (11) and is rotatably connected to the protective box (11). The aeration structure (4) includes a fixed pipe (41) fixedly installed at the bottom of the inside of the reaction tank (1), aerators (42) fixedly connected to the fixed pipe (41) and arranged in a linear array, an air inlet pipe (43) passing through the side of the reaction tank (1) corresponding to the drain pipe (3) and communicating with the fixed pipe (41), and a blower (44) set outside the reaction tank (1) and communicating with the air inlet pipe (43). The air inlet pipe (43) is fixedly connected to the reaction tank (1). The stirring structure (5) includes a stirring shaft (51) rotatably disposed in the reaction tank (1) at a position corresponding to the position above the air inlet pipe (43) and stirring blades (52) disposed in the reaction tank (1) and fixedly connected to the stirring shaft (51). The wastewater treatment system also includes a transmission belt structure (9) connected to the stirring shaft (51) and the blower (44) for transmitting power from the blower (44) to the stirring shaft (51).

2. The wastewater treatment system based on aerobic granular sludge continuous flow according to claim 1, characterized in that: The air cylinder component (83) includes a cylinder (831) fixedly mounted on the top of the sealing cover (32), a piston (833) that moves laterally inside the cylinder (831), a push rod (832) that passes laterally through the cylinder (831) near the connecting rod (826) and is fixedly connected to the piston (833), and a connecting pipe (834) fixedly mounted on the cylinder (831) away from the push rod (832) and communicating with the cylinder (831) and the air bag (7). The push rod (832) is slidably connected to the cylinder (831), and the push rod (832) is rotatably connected to the end of the connecting rod (826) away from the eccentric shaft (825).

3. The wastewater treatment system based on aerobic granular sludge continuous flow according to claim 1, characterized in that: The transmission belt structure (9) includes a fixed plate (91) fixedly mounted on the reaction tank (1), a transmission shaft (92) coaxially fixedly connected to the fan blades of the blower (44), transmission wheels (93) respectively fixedly sleeved on the top ends of the transmission shaft (92) and the stirring shaft (51), and a transmission belt (94) mounted on the two transmission wheels (93). The top ends of the transmission shaft (92) and the stirring shaft (51) are rotatably connected to the fixed plate (91), and the two transmission wheels (93) are connected and transmit power through the transmission belt (94).

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