Reaction device for aerobic granular sludge treatment system and treatment system

Abstract

The utility model provides a reaction device for an aerobic granular sludge treatment system and the aerobic granular sludge treatment system. The reaction device of the aerobic granular sludge treatment system comprises a water inlet pipe and a reaction tank, the bottom of a tank body of the reaction tank is provided with an annular water distribution pipe communicated with the water inlet pipe, the annular water distribution pipe is connected with a plurality of water distribution heads which are uniformly distributed, and water outlets of the plurality of water distribution heads incline towards the inclined upper part of the annular water distribution pipe; and a plurality of groups of turbulent flow devices are uniformly arranged on the tank wall of the reaction tank. By arranging the annular water distribution pipe and the uniformly distributed water distribution heads and additionally arranging a plurality of groups of turbulent flow devices, uniform water distribution can be realized, and the problems of short flow and insufficient hydraulic shear force are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerobic granular sludge treatment, and in particular to a reaction device for an aerobic granular sludge treatment system and the aerobic granular sludge treatment system. BACKGROUND

[0002] The aerobic granular sludge (AGS) technology is the most concerned biological wastewater treatment technology in the field of wastewater treatment in the past decade. It is considered to be the next generation of wastewater treatment technology due to its significant advantages of energy saving, high efficiency and high economic benefit. The successful cases of applying this technology at home and abroad all adopt the operation mode of sequencing batch AGS technology. The biggest advantage of this operation mode is that it can create a "rich-hungry" environment conducive to the formation of granular sludge. A large amount of carbon source available to microorganisms is rich in the newly incoming wastewater in the "rich" stage, and the "hungry" stage is the stage of lack of external carbon source after aeration. The continuous alternation of the two special stages promotes the formation of granular sludge. At the same time, the newly incoming wastewater at the bottom of the device will "top" the supernatant after treatment and sedimentation in the upper part of the device, so that the simultaneous water inlet and outlet can be realized, and the operation efficiency of the device can be improved. However, in addition to the "rich-hungry" condition conducive to the formation of granular sludge, appropriate shear force is also an important factor for the formation of granular sludge. In the treatment process of the existing sequencing batch AGS technology operation mode, the mixing and stirring are mainly realized by means of air blower aeration. However, the technology requires that the dissolved oxygen concentration be controlled within a certain range, so that the stirring may be insufficient, thereby failing to provide appropriate hydraulic shear force and affecting the stable formation of granular sludge. In addition, the simultaneous water inlet and outlet mode of the existing sequencing batch AGS operation mode is prone to uneven water distribution and short flow, resulting in that the effluent indicators do not meet the treatment requirements. SUMMARY

[0003] The present application provides a reaction device for an aerobic granular sludge treatment system and the aerobic granular sludge treatment system. By arranging an annular water distribution pipe and uniformly distributed water distribution heads and additionally arranging multiple groups of turbulence devices, uniform water distribution can be realized, and the problems of short flow and insufficient hydraulic shear force can be avoided.

[0004] In one aspect of the present application, a reaction device for an aerobic granular sludge treatment system is provided, which comprises a water inlet pipe and a reaction tank. The reaction tank is characterized in that an annular water distribution pipe is arranged at the bottom of the tank body and is communicated with the water inlet pipe, the annular water distribution pipe is connected with multiple uniformly distributed water distribution heads, the water outlets of the multiple water distribution heads are inclined to the obliquely upper part of the annular water distribution pipe, and multiple groups of turbulence devices are uniformly arranged on the tank wall of the reaction tank.

[0005] Preferably, the angle α between the annular water distribution pipe and the plurality of water distribution heads is 60°, and the angle θ between the water outlet of the plurality of water distribution heads and the horizontal plane on which the annular water distribution pipe is located is less than 30°.

[0006] Preferably, each group of the flow disturbing device comprises a flow blocking plate and a flow guiding plate, and a fluid outlet is formed between the flow blocking plate and the flow guiding plate, the fluid flowing out of the water distribution head flows to the flow blocking plate through the flow guiding plate, and the flow direction is changed again after passing through the flow blocking plate, and the fluid flows out of the fluid outlet.

[0007] Preferably, the flow blocking plate and the flow guiding plate of each group of the flow disturbing device are arranged in an "eight" shape, the flow guiding plate is located below the flow blocking plate, and the bottom of the flow blocking plate is flush with the bottom of the flow guiding plate.

[0008] Preferably, the flow blocking plate comprises a straight plate located below and a bent plate connected to the straight plate, the horizontal projection length of the straight plate is the same as that of the bent plate, and the length of the straight plate of the flow blocking plate is the same as that of the flow guiding plate of each group of the flow disturbing device.

[0009] Preferably, the angle γ between the flow guiding plate and the flow blocking plate of each group of the flow disturbing device is 45°-75°, and the angle between the flow blocking plate, the flow guiding plate and the horizontal plane is not less than 55°.

[0010] Preferably, the flow disturbing device can be provided with multiple layers, and each group of the flow disturbing device is connected to the wall of the reaction tank by fixing or by a detachable manner.

[0011] Preferably, the number n of the plurality of water distribution heads, the relationship between the number n of the water distribution heads, the pipe diameter D of the water distribution head, the flow rate V1 of the fluid in the water distribution head and the processing capacity Q of the reaction tank is The number N of the single layers of the flow disturbing device is in proportional relationship with the number n of the water distribution heads, and the proportion is N:n=1:1, or N:n=1:1.5 or N:n=1:2.

[0012] Preferably, the annular water distribution pipe is multi-turn, each turn of the annular water distribution pipe is communicated with the water inlet, and the plurality of water distribution heads are uniformly distributed on the multi-turn annular water distribution pipe.

[0013] Preferably, the annular water distribution pipe is arranged outward at equal intervals at the center of the bottom of the reaction device, and can be provided with 1 turn, 2 turns or 3 turns. The water distribution heads are equally distributed on the annular water distribution pipe according to the total length of the annular water distribution pipe.

[0014] Preferably, the flow velocity V1 of the fluid in the water distribution head, the time t for the vertical velocity component of the fluid particle flowing out of the water distribution head to decay to 0, the maximum installation distance of the water outlet of the water distribution head from the horizontal position of the bottom of the flow disturbing device is not more than t, the maximum installation distance of the water outlet of the water distribution head from the vertical position of the bottom of the flow disturbing device is not more than t, and the maximum straight-line installation distance of the space between the water outlet of the water distribution head and the bottom of the flow disturbing device is not more than .

[0015] Preferably, the installation distance is the distance between the water distribution head and the flow disturbing device on the outermost annular water distribution pipe, the distance between the annular water distribution pipe and the pool wall depends on the distance between the water distribution head and the pool wall, and the distance between the water distribution head and the pool wall is equal to the sum of the installation distance and the width of the flow disturbing device. The width of the flow disturbing device is one-tenth of the radius of the pool body or the width of the pool body.

[0016] In another aspect of the present application, an aerobic granular sludge treatment system is provided, which comprises the reaction device described above.

[0017] The reaction device for the aerobic granular sludge treatment system and the aerobic granular sludge treatment system of the present application adopt the annular water distribution pipe to make the fluid flow more evenly distributed to each water distribution head, and set the water distribution head at a certain angle with the annular water distribution pipe and at a certain angle with the horizontal plane to achieve optimal uniform water distribution and form a rotational flow state, increase the uniformity of water distribution, avoid short flow, and through the spiral upward movement of the fluid in the rotational flow state and the setting of the flow disturbing device, the path of the upward movement of the fluid is prolonged, the contact time of the sludge and the sewage is increased, the microorganisms in the sludge can fully adsorb and utilize the pollutants in the sewage, thereby avoiding the risk of short flow caused by uneven water distribution; in addition, the design of the flow disturbing device further strengthens the uniformity of water distribution and increases the hydraulic shear force. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a top view structural schematic diagram of the reaction device for the aerobic granular sludge treatment system of an embodiment of the present application, which has only one layer of flow disturbing device.

[0019] Figure 2 is a front view structural schematic diagram of the annular water distribution pipe of the reaction device for the aerobic granular sludge treatment system of an embodiment of the present application.

[0020] Figure 3 is a left view structural schematic diagram of the reaction device for the aerobic granular sludge treatment system of an embodiment of the present application.

[0021] Figure 4 is a structural schematic diagram of the flow disturbing device of the reaction device for the aerobic granular sludge treatment system of an embodiment of the present application.

[0022] Figure 5 Figure 1 is a schematic diagram of the position relationship between the water distribution head and the turbulence device of the reaction device for the aerobic granular sludge treatment system according to an embodiment of the present application.

[0023] Figure 6 Figure 2 is a schematic diagram of the top view structure of the multi-layer turbulence device of the reaction device for the aerobic granular sludge treatment system according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments of the present application are only used to illustrate one (or more) implementation manner(s) of the present application, but not to limit the present application. The ordinary skilled person in the art can make simple changes to the embodiments similar to the present application, which are within the scope of the present application.

[0025] In the present specification, the reference to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments" and so on, in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specified. The terms "comprising", "including", "having" and their variants, mean "including but not limited to", unless otherwise specified.

[0026] The reaction device for the aerobic granular sludge treatment system provided by the present application comprises a water inlet pipe and a reaction tank. The bottom of the tank body of the reaction tank is provided with an annular water distribution pipe which is communicated with the water inlet pipe. The annular water distribution pipe is connected with a plurality of uniformly distributed water distribution heads. The water outlets of the plurality of water distribution heads are inclined to the obliquely upper side of the annular water distribution pipe. A plurality of groups of turbulence devices are uniformly arranged on the tank wall of the reaction tank. Since the annular water distribution pipe is adopted and the plurality of uniformly distributed water distribution heads are arranged, the water distribution uniformity can be increased, the contact time of the sludge and the sewage is increased, the microorganisms in the sludge can fully adsorb and utilize the pollutants in the sewage, so as to avoid the short flow risk caused by the uneven water distribution. In addition, the design of the turbulence device further enhances the water distribution uniformity and increases the hydraulic shear force.

[0027] As Figure 1The diagram shown is a top view of a reaction apparatus for an aerobic granular sludge treatment system according to an embodiment of this application. The wastewater treatment system in this embodiment includes an inlet pipe 2 and a reaction tank 1. An annular water distribution pipe 11, connected to the inlet pipe 2, is located at the bottom of the reaction tank 1. The annular water distribution pipe is connected to multiple evenly distributed water distribution heads 12. The included angle α between the annular water distribution pipe 11 and the multiple water distribution heads 12 is equal; in this embodiment, α is preferably 60° to achieve uniform water distribution across the water distribution heads.

[0028] like Figure 1 As shown, the outlets of multiple water distribution heads 12 are all inclined upwards towards the annular water distribution pipe 11. In this embodiment, the angle θ formed by the outlets of the multiple water distribution heads 12 and the horizontal plane where the annular water distribution pipe 11 is located is equal. In a preferred embodiment, the angle θ is less than 30°. This water distribution method ensures that the sewage flowing out of the outlets has a certain flow velocity in the horizontal direction. The fluids from multiple outlets influence each other, thereby forming a swirling flow pattern. The swirling fluid rises spirally, prolonging the upward path of the fluid and increasing the contact time between the sludge and the sewage. This allows the microorganisms in the sludge to fully adsorb and utilize the pollutants in the sewage, thereby avoiding the risk of short-circuiting caused by uneven water distribution.

[0029] In this embodiment, the relationship between the number n of water distribution heads 12, the pipe diameter D of the water distribution heads 12, the flow velocity V1 of the fluid inside the water distribution heads 12, and the processing capacity Q of the reaction tank 1 is as follows: The number of water distribution heads 12 is calculated and evenly distributed on the annular water distribution pipe 11.

[0030] To achieve better uniform water distribution, the annular water distribution pipe 11 is arranged outwards from the center of the bottom of the reaction device at equal intervals, and can be configured as 1, 2, or 3 loops. The water distribution heads 12 are evenly distributed on the annular water distribution pipe according to the total length of the annular water distribution pipe 11. In this embodiment, the annular water distribution pipe 11 has two loops, and the connection relationship between the annular water distribution pipe 11 and the water inlet pipe 2 is as follows. Figure 2 , Figure 3 As shown, each ring of water distribution pipe 11 is connected to the water inlet pipe 2, and there are gaps between the outermost ring of water distribution pipe 11 and the tank wall of the reaction tank 1, as well as between adjacent rings of water distribution pipe 11.

[0031] In this embodiment, multiple sets of flow-turbing devices 3 are evenly arranged on the walls of the reaction tank 1. For example... Figure 4 As shown, each set of turbulence devices 3 includes a flow guide plate 32 and a flow deflector plate 31. A fluid outlet is formed between the flow guide plate 32 and the flow deflector plate 31. The fluid flowing out from the water distribution head 12 flows to the flow deflector plate 31 after being guided by the flow guide plate 32. After passing the flow deflector plate 31, the flow direction changes again and flows out from the fluid outlet.

[0032] In a preferred embodiment, the reaction device for aerobic granular sludge treatment system, the baffle 31 and the guide plate 32 are arranged in the shape of "eight", the guide plate 32 is located below the baffle 31, and the guide plate 32 is flush with the bottom of the baffle 31. The baffle 31 includes a straight plate 321 located below and a curved plate connected with the straight plate 321, the length of the straight plate 321 is the same as the horizontal projection length of the curved plate, and the length and width of the guide plate 32 of each group of the flow disturbing device 3 are the same as those of the straight plate 321 of the baffle 31. In fact, the baffle 31 can also be arc-shaped, and the opening width formed by the baffle 31 and the guide plate 32 below can be maximum.

[0033] As shown in Figure 4 , the angle γ between the guide plate 32 and the straight plate 321 is 75°, when water flows out from the water distribution head 12, the water flows upward in sequence, when the sewage passes through the flow disturbing device 3, the bottom is wide and the upper part is narrow, forming a "narrow pipe effect", and after the fluid passes through the upper outlet of the flow disturbing device 3, the local flow rate increases. According to the formula of hydraulic shear force , the flow rate gradient is represented by , the hydraulic shear force is represented by , and the viscous force coefficient is represented by, it can be known that the hydraulic shear force is positively correlated with the velocity gradient, and suitable hydraulic shear force can promote the formation of aerobic granular sludge, thereby enhancing the sewage treatment performance. At the same time, the "eight" shaped flow disturbing device 3 can form a local vortex state due to the blocking effect of the baffle 31 and the guide plate 32 on the streamline, which can strengthen the contact between the sludge and the sewage, increase the collision between the sludges, and promote the aggregation of the flocculent sludge to form granular sludge.

[0034] In actual use, the width of the fluid outlet of the "eight" shaped flow disturbing device 3 is affected by the included angle, the upper water outlet is too narrow, and the water flow is easily blocked; if the upper water outlet is too wide, the performance of the flow disturbing device will be weakened, and the closer the width of the upper water outlet to the width of the lower water inlet, the smaller the velocity gradient of the water flow when passing through the flow disturbing device, and the less obvious the flow disturbing effect. The included angle γ between the guide plate 32 and the baffle 31 can be set to 45°-75°, and γ can be set to 45°, 60° or 75° according to the installation and adjustment conditions to ensure the appropriate width of the upper water outlet.

[0035] The flow disturbing device 3 can be welded or prefabricated embedded parts and connected to the pool wall of the reaction tank 1 by bolts, or plastic material can be used to prevent corrosion. In order to avoid the accumulation of solid substances on the panel of the flow disturbing device, the included angle between the baffle 31 and the guide plate 32 and the horizontal plane is not less than 55°.

[0036] Furthermore, to ensure the turbulence effect, the installation distance between the outlet of the water distribution head 12 of the outermost annular water distribution pipe 11 and the turbulence device 3 needs to be considered. In practice, the distance between the annular water distribution pipe 11 and the pool wall depends on the distance between the water distribution head 12 and the pool wall. The distance between the water distribution head 12 and the pool wall is equal to the sum of the installation distance and the width of the turbulence device 3. The width of the turbulence device 3 can be the radius of the pool or one-tenth of the width of the pool. The turbulence device 3 is installed above the water distribution head 12 along the circumference of the pool wall. Assuming there is no fluid in the reaction device, the water distribution head 12 outlet sprays fluid at a velocity V1, forming a typical parabolic trajectory. According to the principles of kinetic mechanics, under the action of gravitational acceleration, the vertical velocity component of the fluid particle will decay to 0 m / s within time t (i.e., reach the peak of the trajectory), and then the flow state will undergo a phase transition, changing from a continuous water column to a discrete dispersion state. The calculation method for time t is as follows: .

[0037] Let θ be the angle between the water head 12 and the horizontal plane. Then the times when the horizontal and vertical velocity components are 0 m / s are respectively... t and t. This time parameter t is the basis for calculating the spatial positioning of the turbulence-inducing device. In actual operation, reaction tank 1 is filled with sewage and sludge. When the water distributor 12 distributes water in the pressurized fluid medium, the viscosity and turbulence of the fluid cause a significant change in the outlet water pattern of the water distributor 12, gradually evolving from a relatively regular jet of water into a multi-directional, irregular diffusion in three-dimensional space. Based on these reasons, by setting up a turbulence-inducing device at a specific spatial location to implement fluid dynamic control, the streamline stability of the water distribution core area is maintained, and the velocity gradient distribution of the flow field is optimized, ultimately achieving the goal of avoiding short-circuiting and mixing.

[0038] The horizontal and vertical flow distances of the ejected fluid are as follows: t, Therefore, x and y represent the maximum horizontal installation distance between the outlet of the water distribution head 12 and the bottom of the turbulence device 3, which does not exceed t. t, the maximum installation distance in the vertical position does not exceed t, the maximum straight-line installation distance between the outlet of the water distribution head 12 and the bottom of the turbulence device 3: During installation, the above installation distances can be greater than 0.5x, 0.5y, and 0.5L, and less than x, y, and L, depending on the actual situation.

[0039] In a specific embodiment, the design outlet flow velocity v1 of the water distribution head 12 is 1.5 m / s, the design influent COD is 350 mg / L, the suspended solids concentration is 200 mg / L, the fluid temperature is 25℃, and the gravitational acceleration is taken as 9.8 m / s². The calculated t value is approximately 0.153 s. Substituting these values ​​into the calculation, the horizontal and vertical movement distances are... t = 11.45 cm, t = 19.8 cm, = 22.87 cm. It can be calculated that the maximum horizontal distance between the water outlet of the water distribution head 12 and the bottom of the spoiler device is 11.45 cm, the maximum vertical distance is 19.8 cm, and the maximum straight-line distance in space is 22.87 cm. The maximum distance calculated is used for installation.

[0040] In specific practice, in order to ensure good disturbance effect, the reaction device for the aerobic granular sludge treatment system, the spoiler device 3 can be provided with multiple layers, and the service height of each layer of the spoiler device 3 does not exceed 1.5 meters. For example, if the pool body depth is 3 meters, two layers are arranged in the vertical direction, and the number of layers m of the spoiler device depends on the height h of the pool body, and the relationship between the two is m = h / 1.5. When the service height of the second layer is less than 1.5 meters, it is calculated as 1.5 meters. The number of each layer of the spoiler device is equal, and the vertical installation positions are staggered. Each group of spoiler devices 3 serves a fixed water distribution head 12. The relationship between the number N of single layers of the spoiler device 3 and the number n of the water distribution head 12 can be: N:n = 1:1, or N:n = 1:1.5, or N:n = 1:2, or other values, for example, N:n = 1:1.6. The spoiler devices are all installed on the pool wall.

[0041] As shown in Figure 5 , the reaction device for the aerobic granular sludge treatment system, the spoiler device 3 can be provided with two layers. As shown in Figure 6 , each layer of the spoiler device 3 is arranged in the vertical direction, but the distance between every two groups of spoiler devices 3 in the same layer is equal. Figure 5 or Figure 6 As shown in , the fluid flowing out of the water distribution head 12 is guided by the lowermost layer of the flow guide plate 32 and flows towards the flow blocking plate 31. After passing through the flow blocking plate 31, the flow direction changes again, and the fluid flows out of the fluid outlet, forming a local vortex state. In the process of continuing to flow upwards, the fluid is guided by the flow blocking plate 31 of the upper layer and flows towards the flow guide plate 32. After passing through the flow blocking plate 31, the flow direction changes again, and the fluid continues to flow upwards after flowing out of the fluid outlet. In the process of passing through multiple layers of spoiler devices 3, further rotation and upward movement are realized to avoid short flow.

[0042] The second aspect of the present application provides a treatment system for an aerobic granular sludge treatment system, which includes the reaction device for the aerobic granular sludge treatment system in the embodiments of the present application, which can overcome uneven water distribution, avoid the formation of short flow, and increase the hydraulic shear stress.

[0043] In order to better verify the effect of the embodiment of the present application, comparative experiments are carried out. Two sets of sequencing batch AGS devices are used, and the device height is 1 meter. The R1 group is the sewage treatment system of the embodiment of the present application with an additional layer of turbulence device, and the R2 group has no turbulence device, and the remaining operation parameters and device structures are completely consistent.

[0044] Both groups of devices are operated in the sequencing batch AGS mode, and each cycle contains the stages of simultaneous water inlet and outlet (bottom water inlet, top water outlet), aeration and sedimentation. At 0 min, 5 min, 10 min, 15 min, 20 min, 25 min and 30 min of water inlet, samples are taken at the water outlet position of the R1 group and the R2 group, and the chemical oxygen demand COD and mixed liquor suspended solids concentration MLSS (national standard method) are measured, and the measurement results are shown in Table 1.

[0045]

[0046] Under ideal conditions, the pollutant indicators at the top water outlet at the initial water inlet time and the water inlet completion time of the AGS device should be consistent, but in the actual water inlet process, the pollutant concentration at the water outlet will rise due to the short flow and material diffusion caused by uneven water distribution. This phenomenon will reduce the treatment capacity of the device. Obviously, the COD and MLSS concentration values of the top water outlet of the R1 group with an additional turbulence device are lower than those of the R2 group within 30 min of water inlet, and the concentration remains relatively stable. The R2 group without an additional turbulence device has a large change in the front and back concentration values, and if the water inlet time is further extended, the water outlet has the risk of exceeding the standard.

[0047] From the above data, it can be seen that the use of the reaction device and treatment system provided by the present application can greatly avoid the short flow phenomenon during the simultaneous water inlet and outlet of the sequencing batch AGS device.

Claims

1. A reaction device for an aerobic granular sludge treatment system, comprising a water inlet pipe, a reaction tank, characterized in that, The bottom of the pool body of the reaction pool is provided with an annular water distribution pipe communicated with the water inlet pipe, the annular water distribution pipe is connected with a plurality of uniformly distributed water distribution heads, the water outlets of the plurality of water distribution heads are inclined to the obliquely upper side of the annular water distribution pipe, and the pool wall of the reaction pool is uniformly provided with a plurality of groups of flow disturbing devices; the included angle a between the annular water distribution pipe and the plurality of water distribution heads is 60°, and the included angle θ between the water outlets of the plurality of water distribution heads and the horizontal plane on which the annular water distribution pipe is located is less than 30°.

2. The reaction apparatus for an aerobic granular sludge treatment system according to claim 1, characterized by, Each group of the flow disturbing devices comprises a flow baffle and a flow guide plate, a fluid outlet is formed between the flow baffle and the flow guide plate, the fluid flowing out of the water distribution head flows to the flow baffle through the flow guide plate, and the flowing direction of the fluid is changed again after passing through the flow baffle and then flows out of the fluid outlet.

3. The reactor for an aerobic granular sludge treatment system according to claim 2, characterized in that, The flow baffle and the flow guide plate of each group of the flow disturbing devices are arranged in an "eight" shape, the flow guide plate is located below the flow baffle, and the bottom of the flow baffle is flush with the bottom of the flow guide plate.

4. The reaction apparatus for an aerobic granular sludge treatment system according to claim 3, characterized by, The flow baffle comprises a straight plate located below and a bent plate connected with the straight plate, the horizontal projection length of the straight plate is the same as that of the bent plate, the length of the flow guide plate of each group of the flow disturbing devices is the same as that of the straight plate of the flow baffle.

5. The reactor for an aerobic granular sludge treatment system according to claim 4, characterized in that, The included angle γ between the flow guide plate and the flow baffle of each group of the flow disturbing devices is 45°-75°, and the included angle between the flow baffle, the flow guide plate and the horizontal plane is not less than 55°.

6. The reaction apparatus for an aerobic granular sludge treatment system according to claim 5, characterized in that, The flow disturbing devices can be provided with multiple layers, and each group of the flow disturbing devices is connected to the pool wall of the reaction pool in a fixed or detachable manner.

7. The reactor for an aerobic granular sludge treatment system according to claim 6, characterized in that The number of the plurality of water distribution heads is n, and the relationship between n, the pipe diameter D of the water distribution head, the flow rate V1 of the fluid in the water distribution head, and the treatment capacity Q of the reaction tank is The number of single layers N of the flow disturbing device is in proportional relationship with the number n of the water distribution heads, and the proportion is N:n=1:1, or N:n=1:1.5, or N:n=1:

2.

8. The reaction apparatus for an aerobic granular sludge treatment system according to claim 7, characterized in that, The annular water distribution pipe is multi-turn, each turn of the annular water distribution pipe is communicated with the water inlet, and the plurality of water distribution heads are uniformly distributed on the multi-turn annular water distribution pipe.

9. The reactor for an aerobic granular sludge treatment system according to claim 8, characterized in that The time t for the vertical velocity component of the fluid particle flowing out of the water distribution head to decay to 0, the maximum installation distance of the water outlet of the water distribution head from the horizontal position of the bottom of the flow disturbing device is not more than t, the maximum installation distance of the vertical position is not more than t, the maximum straight-line installation distance of the space between the water outlet of the water distribution head and the bottom of the flow disturbing device is not more than .

10. An aerobic granular sludge treatment system characterized by, The reaction device comprises the reaction device of any one of claims 1-9.

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