CN113968621B

CN113968621B - Self-circulation continuous flow aerobic granular sludge purifying treatment device

Info

Publication number: CN113968621B
Application number: CN202110713329.2A
Authority: CN
Inventors: 张崭华; 张恒
Original assignee: Beijing Proviridia Technology Co Ltd
Current assignee: Beijing Proviridia Technology Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2023-09-12
Anticipated expiration: 2041-06-25
Also published as: CN113968621A

Abstract

A self-circulation continuous flow aerobic granular sludge purifying treatment device belongs to the technical field of water treatment equipment. Comprises a main body provided with a water inlet part and a water outlet part; the biological selection area is arranged in the internal space of the main body and is communicated with the water inlet part; the aerobic zone is arranged in the internal space of the main body, communicated with the biological selection zone and positioned at the downstream of the biological selection zone, and part of water flowing out of the aerobic zone is suitable for flowing back into the biological selection zone. According to the invention, the biological selection area is arranged to mix the inflow water of the device with the water body flowing back from the aerobic area, the non-beneficial bacteria in the inflow water of the device and the beneficial bacteria in the flowing back water body can perform biological competition in the biological selection area, so that the quantity and the proportion of the beneficial bacteria in the mixed water body are greatly improved, and further growth and propagation are performed in the biological selection area, so that the water body can immediately perform a water purification reaction after entering the aerobic area, thereby improving the efficiency of the water purification reaction in the aerobic area, and further improving the efficiency of sewage treatment of the invention.

Description

Self-circulation continuous flow aerobic granular sludge purifying treatment device

Technical Field

The invention relates to the technical field of water treatment equipment, in particular to a self-circulation continuous flow aerobic granular sludge purifying treatment device.

Background

The existing biochemical water treatment mode is an A2/O process (also called anaerobic-anoxic-aerobic process) or an A/O process (also called anaerobic-aerobic process), and the two processes are that firstly sewage is introduced into an anoxic section for denitrification reaction, and then sewage after the anoxic section reaction is introduced into an aerobic section for nitrification reaction, so that pollutants such as organic matters, nitrogen, phosphorus and the like in the sewage are removed.

However, in the prior art, the effluent of the anoxic section is directly introduced into the aerobic section, and the sewage is inhibited by the anoxic environment in the anoxic section, so that the content of beneficial bacteria including nitrifying bacteria in the effluent of the anoxic section is low, and therefore, after the effluent of the anoxic section is introduced into the aerobic section, the effluent is required to be subjected to the influence of the environment in the aerobic section, so that the beneficial bacteria including nitrifying bacteria in the water body are subjected to mass propagation, and thus, effective reaction can be performed, and therefore, the effluent of the anoxic section is required to be subjected to the propagation of the beneficial bacteria including nitrifying bacteria in the aerobic section, and effective reaction cannot be performed in a period of time when the water body enters the aerobic section, so that the efficiency of the water purification reaction in the aerobic section is low, and the efficiency of water treatment is low.

Disclosure of Invention

Therefore, the invention aims to overcome the technical problems that the water treatment efficiency is low because the water body needs to be propagated with beneficial bacteria including nitrifying bacteria and cannot be subjected to effective water purification reaction in the prior art, and the invention provides the self-circulation continuous flow aerobic granular sludge purification treatment device.

The invention provides the following technical scheme:

the self-circulation continuous flow aerobic granular sludge purifying treatment device comprises:

the main body is provided with a water inlet part and a water outlet part;

the biological selection area is arranged in the internal space of the main body and is communicated with the water inlet part;

the aerobic zone is arranged in the internal space of the main body, communicated with the biological selection zone and positioned at the downstream of the biological selection zone, and part of water flowing out of the aerobic zone is suitable for flowing back into the biological selection zone.

Optionally, the water outlet end of the water inlet part and the opening of the aerobic zone for refluxing to the biological selection zone are all arranged above the water outlet end of the biological selection zone.

Optionally, a water stirring device is arranged in the biological selection area.

Optionally, the water stirring device comprises: the first guide plates are arranged in front of the water body flow path.

Optionally, the first guide plates are oppositely arranged on the cavity wall forming the biological selection area, the lower ends of the first guide plates incline towards the bottom of the biological selection area, and the first guide plates are alternately arranged along the height direction.

Optionally, a water distribution member is arranged at the outlet of the water inlet part.

Optionally, the end of the water distribution member is provided with a tooth shape.

Optionally, the method further comprises:

the first partition board is arranged in the main body, one side of the first partition board forms a transition zone, and the other side of the first partition board forms the aerobic zone;

and water in the aerobic zone enters the transition zone through the top and flows back to the biological selection zone from the bottom of the transition zone.

Optionally, a degassing guide plate is arranged in the transition zone, and the degassing guide plate is positioned in front of the water body flow path in the transition zone.

Optionally, the degassing guide plate includes: a first end arranged perpendicular to the water flow direction, and a second end obliquely arranged along the water flow direction; the plurality of degassing guide plates are alternately arranged along the water body flowing direction, and the second ends incline towards the first ends in the water body flowing direction.

Optionally, the inner cavity of the transition zone is at least partially curved to form an inclined portion, the bottom of which communicates with the bioselective zone.

Optionally, an aeration device is arranged in the aerobic zone, and the aeration device comprises:

the air passage pipeline is communicated with the air passage pipeline, and the air passage pipeline is arranged in a parallel multi-row structure.

Optionally, a second guide plate is arranged in the aerobic zone, and the second guide plate is positioned in the flowing direction of the water body generated by the aerator.

Optionally, a second partition board is arranged in the aerobic zone, one side of the second partition board forms an aerobic internal reflux zone, and the space formed by the other side of the second partition board is internally provided with the aeration device.

Optionally, a third guide plate is arranged in the aerobic internal reflux zone, and the third guide plate is obliquely arranged along the flowing direction of the water body.

Optionally, the method further comprises: the third baffle is arranged on one side of the first baffle, a transition area is formed between the first baffle and the third baffle, a sludge filtering layer area is formed on one side of the third baffle different from the transition area, and the sludge filtering layer area is communicated with the transition area and is positioned above the biological selection area.

Optionally, a separation zone is disposed on top of the sludge filtering layer zone, and the separation zone includes: a plurality of inclined pipes arranged in parallel.

Optionally, the method further comprises:

the inlet end of the sludge balance pipe is positioned in the sludge filtering layer area, and the outlet end of the sludge balance pipe is positioned in the biological selection area.

Optionally, a fourth baffle is arranged in the sludge filtering layer area, an inlet of the sludge filtering layer area is arranged in a space formed on one side of the fourth baffle, a sludge collecting area is formed on the other side of the fourth baffle, and a sludge collecting hopper is arranged in the sludge collecting area.

Optionally, the fourth partition extends into the transition zone and is blocked in the direction of flow of the body of water.

Optionally, the mud collecting hopper is connected with the space outside the main body and/or the biological selection area through a pipeline provided with a valve.

Optionally, a clean water weir groove is arranged above the separation area, and the clean water weir groove is connected with the water outlet part.

Optionally, the biological selection area is provided with an exhaust pipe communicated with the aerobic area.

The technical scheme of the invention has the following advantages:

1. the invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, which comprises a main body, wherein the main body is provided with a water inlet part and a water outlet part; the biological selection area is arranged in the internal space of the main body and is communicated with the water inlet part; the aerobic zone is arranged in the internal space of the main body, communicated with the biological selection zone and positioned at the downstream of the biological selection zone, and part of water flowing out of the aerobic zone is suitable for flowing back into the biological selection zone.

The invention sets up the biological selective area to mix the water body comprising mud that the apparatus intakes and aerobic area flows back, the non-beneficial bacterial in the apparatus intakes and beneficial bacterial in the backflow water body will carry on the biological competition in the biological selective area, because the water body comprising mud after the treatment of the aerobic area contains a large amount of beneficial bacterial, therefore beneficial bacterial quantity and proportion in the water body after mixing are promoted by a wide margin, and further carry on the growth and reproduction in the biological selective area, the promotion of beneficial bacterial quantity can oppress the growth and reproduction of the non-beneficial bacterial, make the non-beneficial bacterial keep the comparatively low proportion even die, compared with the way that the apparatus intakes and enters the aerobic area directly in the prior art, it carries on the growth and reproduction of beneficial bacterial and water purification reaction at the same time under the environmental influence of the aerobic area, the invention sets up the biological selective area, through mixing the apparatus intakes and the way that the backflow water body, make the beneficial bacterial in the water body has already satisfied the need of carrying on the water purification reaction, thus can promote the efficiency of the water purification reaction in the aerobic area immediately after entering the aerobic area, thus has promoted the invention, the efficiency of the water purification reaction is improved immediately;

Meanwhile, in the prior art, as the water inlet of the device is directly communicated into the aerobic zone, namely, the non-beneficial bacteria can continuously enter the aerobic zone, the ratio of the beneficial bacteria in the aerobic zone in the prior art cannot be further improved.

2. The self-circulation continuous flow aerobic granular sludge purifying treatment device provided by the invention has the advantages that the water outlet end of the water inlet part and the opening of the aerobic zone for returning to the biological selection zone are arranged above the water outlet end of the biological selection zone.

The invention sets the outlet end of the water inlet part and the opening of the aerobic zone for refluxing to the biological selection zone above the outlet end of the biological selection zone, the water inlet and the water body of the reflux are both flowed and mixed under the action of gravity, and the power requirement of the water body flowing in the invention is reduced, so that the invention does not need to be provided with a power device, on one hand, the energy consumption is saved, and on the other hand, the damage to the sludge in the water body caused by the components of the power device, such as an agitating impeller, is avoided.

3. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a water stirring device is arranged in a biological selection area.

The water stirring device is arranged in the biological selection area, so that the water body is stirred and mixed in the biological selection area, the mixing effect of the water body is improved, pollutants are removed fully, and biological competition is carried out fully.

4. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, which comprises: the first guide plates are arranged in front of the water body flow path.

The first guide plate provided by the invention has the functions of blocking and disturbing water flow, and the water flow can form turbulence at the first guide plate, so that the water body is fully mixed, pollutants are fully removed, and biological competition is fully carried out.

5. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein first guide plates are oppositely arranged on the cavity wall forming a biological selection area, the lower ends of a plurality of first guide plates incline towards the bottom of the biological selection area, and a plurality of first guide plates are alternately arranged along the height direction.

The first guide plate is obliquely arranged, so that the resistance of the first guide plate to water flow can be reduced, and the power requirement of water flow in the invention is reduced; the first guide plates are alternately arranged along the height direction, so that the water body forms cross flow in the biological selection area, and the mixing of the water body is promoted.

6. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a water distribution part is arranged at the outlet of a water inlet part.

The water distribution member is arranged at the outlet of the water inlet part, the water inlet of the equipment is impacted on the water distribution member and enters the biological selection area after being subjected to the water distribution effect of the water distribution member, and the water distribution effect of the water distribution member can ensure that the water inlet of the equipment uniformly enters, so that the formation of torrent is avoided and the mixing effect is reduced.

7. The end part of the water distribution part is provided with a tooth shape.

The end part of the water distribution part is provided with the tooth shape, so that on one hand, the water distribution function is realized, the water inlet of the equipment uniformly enters from the tooth space, on the other hand, the cutting function is realized on the flocs or sludge in the water inlet, the formation of granular sludge in an aerobic zone is promoted, and the water purification effect is improved.

8. The self-circulation continuous flow aerobic granular sludge purifying treatment device provided by the invention further comprises a first baffle plate, wherein the first baffle plate is arranged in the main body, one side of the first baffle plate forms a transition zone, and the other side of the first baffle plate forms the aerobic zone; and water in the aerobic zone enters the transition zone through the top and flows back to the biological selection zone from the bottom of the transition zone.

The invention sets up the first baffle in order to separate and form the transition zone and good oxygen district, the water of the good oxygen district enters the said transition zone through the top of the first baffle and flows back to the said biological selection area from the bottom of the said transition zone, make the effluent of the good oxygen district flow back under the action of gravity, reduce the power demand that the water body flows in the invention, thus make the invention needn't set up the power plant;

meanwhile, as the transition area is a non-aeration area, water can be subjected to dynamic static mud-water preliminary separation in the transition area, and under the action of gravity, sludge is settled, compressed and gathered from the water, so that granulation of flocculent sludge is promoted, the sludge has adsorptivity, is settled to the bottom and flows back to the biological selection area, beneficial bacteria are returned to the biological selection area by the sludge, and impurities in the water in the biological selection area are adsorbed by the adsorption effect, so that the effect of purifying the water is improved;

in addition, the transition zone can subside more mud and flow back to the biological selection zone through gravity backward flow, because the beneficial bacterium concentration that the mud carried is far higher than the liquid in the good oxygen district play water, consequently can effectively promote the quantity of the beneficial bacterium in the biological selection zone with more mud backward flow to the biological selection zone to promote the effect of biological selection in the biological selection zone, and the transition zone can also avoid setting up power device such as the pump body and drive the play water of good oxygen district and flow back through gravity, and lead to the mud that has adsorptivity in the water to be destroyed by power device such as the pump body.

9. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a degassing guide plate is arranged in a transition zone and is positioned in front of a water body flow path in the transition zone.

According to the invention, the degassing guide plate is arranged in the transition zone, the water body forms impact with the degassing guide plate in the flowing process, the water body reacts in the aerobic zone in the impact process to release gas carried by the water body, the mixing and biological competition process of the biological selection zone is prevented from being influenced by the gas, the subsequent water body purifying process is also prevented from occupying the equipment space, and the equipment water treatment capacity is reduced.

10. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, which comprises a first end arranged perpendicular to the flow direction of a water body and a second end obliquely arranged along the flow direction of the water body; the plurality of degassing guide plates are alternately arranged along the water body flowing direction, and the second ends incline towards the first ends in the water body flowing direction.

The first end of the degassing guide plate is used for impacting with the water body so as to release gas carried in the water body, the second end of the degassing guide plate plays a role in guiding the flow of the water body, and the water body is guided to flow to the first end to release the gas, so that the degassing effect in the transition zone is better.

11. According to the self-circulation continuous flow aerobic granular sludge purification treatment device provided by the invention, the inner cavity of the transition zone is at least partially bent to form an inclined part, and the bottom of the inclined part is communicated with the biological selection zone.

The inner cavity of the transition zone is at least partially bent to form the inclined part, so that the length of the transition zone is increased, the residence time of the water body in the transition zone is increased, the time for dynamic standing mud-water preliminary separation of the water body is further increased, the mud-water separation and flocculation sludge granulation effects are improved, and meanwhile, the inclined part also plays a role in guiding, so that the sludge with adsorptivity is guided to the communication part between the bottom of the transition zone and the biological selection zone, and is convenient for entering the biological selection zone.

12. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein an aeration device is arranged in an aerobic zone, the aeration device comprises a plurality of aerators, the aerators are communicated through a gas circuit pipeline, and the aerators are arranged in a parallel multi-row structure.

The aeration device comprises a plurality of aerators which are arranged in a parallel multi-row structure, so that rising gas of each row of aerators forms an air curtain in an aerobic zone to drive a water body to rise, then the water body is lowered under the action of gravity, two opposite longitudinal vortex flows are formed between the air curtains, the mixing and reaction of the water body and aerobic microorganisms are promoted by the circulating mixing effect of the longitudinal vortex flows, the effect of water purification reaction is improved, and meanwhile, the longitudinal vortex flows are favorable for the suspension and hydraulic scrubbing and cutting of particle bodies, so that the generation of particle sludge is promoted, the mixed state benefit in the aerobic zone is improved, and the water purification effect is further improved.

13. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a second guide plate is arranged in an aerobic zone and is positioned in the flowing direction of water body flow generated by an aerator.

The invention sets up the second baffle and cooperates with aerator, make the second baffle play a role in guiding the air curtain formed in the aerobic zone, hinder the water to rise along with the air curtain continuously, but flow back by guiding the effect, and then promote the air curtain in the aerobic zone to form two opposite longitudinal eddies, promote the mixing and reaction of water and aerobic microorganism through the cyclic mixing effect of the longitudinal eddies, the longitudinal eddies are favorable to suspension and hydraulic scrubbing of the granule at the same time, thus promote the generation of the granule mud, therefore has improved the mixed state benefit in the aerobic zone, and further promoted the water purification effect.

14. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a second partition board is arranged in an aerobic zone, one side of the second partition board forms an aerobic internal reflux zone, and the space formed by the other side of the second partition board is internally provided with an aeration device.

The invention sets the second baffle to form the aerobic internal reflux zone, the ascending gas of the aeration device drives the water body to ascend, then the water body descends under the action of gravity of the water body in the aerobic internal reflux zone, the circulation of the water body is formed in the aerobic zone, and the mixing and the reaction of the water body and aerobic microorganisms are promoted by the circulation mixing effect, so that the water purifying effect is improved.

15. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a third guide plate is arranged in an aerobic internal reflux zone, and is obliquely arranged along the flowing direction of a water body.

According to the invention, the third guide plate is arranged in the aerobic internal reflux zone, and the third guide plate is impacted with the third guide plate to form turbulence when the water flows, so that the mixing and reaction of the water and aerobic microorganisms are promoted, the water purifying effect of the aerobic zone is improved, meanwhile, the inclined arrangement of the third guide plate can reduce the resistance to water flow, on one hand, the power requirement of the water flow is reduced, on the other hand, the flow speed of the water in the aerobic internal reflux zone is ensured, the reduction of the circulation speed caused by the resistance in the aerobic internal reflux zone is avoided, and the mixing and reaction effect of the water and the aerobic microorganisms are influenced.

16. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, which also comprises a third baffle plate, wherein the third baffle plate is arranged at one side of the first baffle plate, the transition area is formed between the first baffle plate and the third baffle plate, the sludge filtering layer area is formed at one side of the third baffle plate, which is different from the transition area, and the sludge filtering layer area is communicated with the transition area and is positioned above the biological selection area.

The invention sets up the third baffle and separates and forms transition zone and mud filtering layer district, mud filtering layer district carries out mud-water separation to the water that is led in by the transition zone, promotes the water purification effect, and in addition mud filtering layer district sets up above the biological selection district, has promoted the space utilization of this device.

17. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a separation area is arranged at the top of a sludge filtering layer area, and comprises a plurality of inclined pipes which are arranged in parallel.

The invention is provided with the separation area to separate the flocculated sludge and suspended matters in the water body, when the flocculated sludge and suspended matters rise along with the water body, the flocculated sludge and suspended matters enter the inclined tube and are blocked by the inclined tube to be adsorbed on the inclined tube, and the flocculated sludge and suspended matters further gather and fall down, so that the water purification effect can be further improved.

18. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, which also comprises a sludge balance pipe, wherein the inlet end of the sludge balance pipe is positioned in the sludge filtering layer area, and the outlet end of the sludge balance pipe is positioned in the biological selection area.

The invention sets up the mud balance pipe and flows back the bigger flocculating sludge formed under the separation area further to the biological selection area, thus reduce the concentration of flocculating sludge and suspended matters in the mud filtering layer area, lighten the burden of the separation area; meanwhile, when the concentration of the flocculated sludge and suspended matters in the sludge filtering layer area reaches a certain height, the flocculated sludge and suspended matters also enter the biological selection area through the sludge balance pipe, so that the concentration of the flocculated sludge and suspended matters in the sludge filtering layer area is reduced, the burden of the separation area is lightened, and the water purifying effect is improved.

19. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a fourth baffle plate is arranged in a sludge filtering layer area, an inlet of the sludge filtering layer area is arranged in a space formed on one side of the fourth baffle plate, a sludge collecting area is formed on the other side of the fourth baffle plate, and a sludge collecting hopper is arranged in the sludge collecting area.

According to the invention, the fourth partition plate is arranged to form a sludge collecting area, when the water body rises above the fourth partition plate in the sludge filtering layer area, the water flow speed is instantly slowed down due to sudden expansion of the cavity, so that the aggregation and subsidence of residual flocculated sludge and suspended matters in the water body are promoted, the residual flocculated sludge and suspended matters are led out by the sludge hopper, the concentration of the flocculated sludge and suspended matters in the sludge filtering layer area is reduced, the suspended matters in the water discharged by the device are reduced, and the water purifying effect of the device is improved.

20. According to the self-circulation continuous flow aerobic granular sludge purifying treatment device provided by the invention, the fourth baffle plate extends into the transition zone and is blocked in the flowing direction of the water body.

The fourth partition plate extends into the transition zone to form a barrier to the water flow in the transition zone, so that on one hand, the water in the transition zone is promoted to enter the sludge filtering layer zone, and on the other hand, the transition zone is separated from the biological selection zone so as to control the reflux quantity of the transition zone.

21. The self-circulation continuous flow aerobic granular sludge purifying treatment device provided by the invention is characterized in that the sludge collecting hopper is connected with the space outside the main body and/or the biological selection area through a pipeline provided with a valve.

The sludge collected by the sludge collecting hopper can be discharged out of the main body, and can also flow back to the biological selection area to play roles in adsorption and strain supplementation.

22. The invention provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, wherein a clear water weir groove is arranged above a separation area and is connected with a water outlet part.

The device is provided with the clean water weir groove, so that the water outlet of the device is more uniform, the water flow is more stable, and the phenomenon of short flow and turbulent flow is avoided to influence the water outlet effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a top view of embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of the K1 direction in FIG. 1;

fig. 4 is a schematic structural diagram of the K2 direction in fig. 1.

Reference numerals illustrate:

1. a water inlet part; 2. a water distribution member; 3. a first zone; 4. a biological selection area; 5. a first guide plate; 6. a sludge return valve; 7. a sludge discharge valve; 8. an aerator; 9. an aerobic zone; 10. an aerobic internal reflux zone; 11. a third guide plate; 12. a transition zone; 13. a degassing guide plate; 14. a sludge filtering layer area; 15. a sludge balance pipe; 16. a separation zone; 17. a clear water weir trough; 18. a water outlet part; 19. a sludge return pipe; 20. an exhaust pipe; 21. a first separator; 22. a second guide plate; 23. a second separator; 24. a fourth separator; 25. a mud collecting bucket; 26. a main body; 27. partition boards; 28. third partition, 29. Inclined portion.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the terms "first," "second," and "third" are used merely for distinguishing, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The embodiment provides a self-circulation continuous flow aerobic granular sludge purifying treatment device, as shown in figures 1-4, comprising

The main body 26 is provided with a water inlet part 1 and a water outlet part 18, wherein the water inlet part 1 is used for introducing a water body containing sewage into the main body 26, and the water outlet part 18 is used for leading out the water body treated by the equipment; the material of the main body 26 is not limited in this embodiment, and may be steel structure, concrete structure, polymer material, etc.; the shape of the main body 26 is not limited in this embodiment, and may be rectangular, cylindrical, or the like.

The biological selection area 4 is arranged in the internal space of the main body 26 and communicated with the water inlet part 1, and part of water flowing out of the aerobic area 9 is suitable for flowing back into the biological selection area 4; the water inlet of the water inlet part 1 and the water body of the aerobic zone 9 are mixed through the biological selection zone 4, the beneficial bacteria in the water inlet part 1 and the beneficial bacteria in the water body of the reflux can be in biological competition in the biological selection zone 4, the water body treated by the aerobic zone 9 contains a large number of beneficial bacteria, so that the number and the ratio of the beneficial bacteria in the mixed water body are greatly improved, and further growth and propagation are carried out in the biological selection zone 4, meanwhile, the improvement of the number of the beneficial bacteria can press the growth and propagation of the non-beneficial bacteria, so that the non-beneficial bacteria keep a relatively low ratio or even die, the beneficial bacteria in the water body can meet the requirement of water purification reaction when entering the aerobic zone 9, and the ratio of the beneficial bacteria in the aerobic zone 9 can always keep a relatively high state, so that the water body can be immediately subjected to water purification reaction after entering the aerobic zone 9, the efficiency of water body treatment sewage in the aerobic zone 9 is improved, and in addition, the water body of the reflux of the aerobic zone 9 carries the water body with adsorptivity, the sludge in the biological selection zone 4 is also reduced, the water content of the water body is polluted in the water treatment process is initially, and the water treatment is carried out in the water treatment process, and the water treatment is reduced.

Preferably, in order to reduce the power requirement of the water flow in the embodiment, the water outlet end of the water inlet part 1 and the opening of the aerobic zone 9 for refluxing to the biological selection zone 4 are arranged above the water outlet end of the biological selection zone 4, so that the water inlet of the water inlet part 1 and the water in the refluxing state flow under the action of self gravity without a power device for providing power for the water flow; of course, in this embodiment, the positions of the water outlet end of the water inlet portion 1 and the opening of the aerobic zone 9 for refluxing to the bioselective zone 4 are not particularly limited, and preferably, as shown in fig. 1, the openings of the water inlet portion 1 and the aerobic zone 9 for refluxing to the bioselective zone 4 are all disposed at the top of the bioselective zone 4.

In order to enhance the mixing effect of the water body in the biological selection area 4, a water stirring device is arranged in the biological selection area 4 so as to stir the water body and promote the mixing of the water body; the structure of the water stirring device is not particularly limited, and preferably, as shown in fig. 1, the water stirring device comprises a plurality of first guide plates 5, wherein the first guide plates 5 are arranged in front of a water flow path, the first guide plates 5 have the functions of blocking and disturbing water flow, and the water flow forms turbulence at the first guide plates 5, so that the water body is fully mixed to fully remove pollutants and fully conduct biological competition; of course, in other embodiments, the water stirring device may be a blade driven to rotate, and in this case, the water outlet end of the water inlet portion 1 and the opening of the aerobic zone 9 for returning to the biological selection zone 4 may not be disposed above the water outlet end of the biological selection zone 4.

The position of the first guide plate 5 is not specifically limited in this embodiment, the first guide plate 5 is relatively disposed on a cavity wall forming the biological selection area 4, the first guide plate 5 may be welded with the cavity wall of the biological selection area 4, or may be detachably connected by a bolt, and a plurality of the first guide plates 5 are alternately disposed along a height direction, and the first guide plates 5 may be perpendicular to a water flow direction, so as to form a stable turbulent flow, or may be disposed obliquely at a certain angle, so long as the water body may be blocked, preferably, as shown in fig. 1, the lower ends of the plurality of first guide plates 5 are inclined toward the bottom of the biological selection area 4.

Because gas is generated in the mixing process of the water body, the gas accumulated in the biological selection area 4 occupies the accommodating space of the equipment, and the biological selection area 4 of the embodiment is provided with an exhaust pipe 20 communicated with the aerobic area 9, and the gas generated by mixing is discharged into the aerobic area 9 and is discharged along with the gas in the aerobic area 9.

In order to prevent the mixing effect in the biological selection area 4 from being affected by uneven water inflow of the water inlet portion 1, in this embodiment, a water distribution member 2 is further disposed at the outlet of the water inlet portion 1, so that the water inflow of the water inlet portion 1 uniformly flows into the biological selection area 4.

In this embodiment, the structure of the water distribution member 2 is not specifically limited, preferably, as shown in fig. 1, the water distribution member 2 is disposed at the top of the bioselective zone 4, the water distribution member 2 may be welded with the cavity wall of the bioselective zone 4, or may be detachably connected by a bolt, and the water distribution member 2 is inclined toward the sidewall of the bioselective zone 4, a water distribution channel is formed between the water distribution member 2 and the sidewall of the bioselective zone 4, so that the water entering the water inlet portion 1 enters the bioselective zone 4 along the water distribution channel after striking the water distribution member 2, and further, as shown in fig. 3, the end portion of the water distribution member 2 is provided with a tooth shape, which plays a role in distributing water to make the water entering the water inlet portion 1 enter uniformly from teeth, and on the other hand, when the embodiment is connected with anoxic denitrification treatment water, the tooth-shaped water distribution member 2 plays a role in cutting the flocs or sludge in the water inlet, and promotes the formation of granular sludge in the aerobic zone 9, and improves the water purification effect; as a variant, the end of the water distribution member 2 may have other structures such as a wave shape.

An aerobic zone 9 disposed in the internal space of the main body 26, communicating with the bioselective zone 4 and located downstream of the bioselective zone 4, a portion of the water flowing out through the aerobic zone 9 being adapted to flow back into the bioselective zone 4.

In order to ensure that the nitrification reaction is performed in the aerobic zone 9, an aeration device is arranged in the aerobic zone 9 of the embodiment, the structure of the aeration device is not particularly limited, preferably, as shown in fig. 1, the aeration device of the embodiment comprises a plurality of aerators 8, the aerators 8 are communicated through a gas circuit pipeline, and the aerators 8 are arranged in a parallel multi-row structure, so that rising gas of each row of aerators 8 forms a gas curtain in the aerobic zone 9, and then drives a water body to rise, then the water body is lowered under the action of self gravity, two opposite longitudinal vortex flows are formed between the gas curtains, the mixing and the reaction of the water body and aerobic microorganisms containing nitrifying bacteria are promoted through the circulation mixing action of the longitudinal vortex flows, the effect of the water purification reaction including the nitrification reaction is promoted, and meanwhile, the longitudinal vortex is favorable for the suspension and hydraulic scrubbing of the particle bodies, thereby promoting the generation of particle sludge, and further improving the mixed state benefit in the aerobic zone 9; of course, in other embodiments, the aerator 8 may not be arranged and may be capable of introducing gas into the aerobic zone 9.

In order to further promote the formation of longitudinal vortex in the aerobic zone 9, it is preferable that a second guide plate 22 is arranged in the aerobic zone 9, the second guide plate 22 can be welded with the cavity wall of the aerobic zone 9, and also can be detachably connected through bolts, the second guide plate 22 is positioned in the flowing direction of the water body generated by the aerator 8, the water body rising along with the air curtain is blocked by the second guide plate 22 to flow back, and further, two opposite longitudinal vortex are formed between the air curtains in the aerobic zone 9.

On the basis of setting the aerobic zone 9, in order to further enhance the reaction effect in the aerobic zone 9, a second baffle plate 23 is arranged in the aerobic zone 9, one side of the second baffle plate 23 forms an aerobic internal reflux zone 10, the space formed by the other side of the second baffle plate 23 is internally provided with an aeration device, ascending gas of the aeration device drives water to ascend, then the water descends under the action of gravity of the water in the aerobic internal reflux zone 10, the circulation of the water is formed in the aerobic zone 9, the mixing and the reaction of the water and aerobic microorganisms containing nitrifying bacteria are promoted through the circulation mixing effect, and the effect of the water purification reaction containing the nitrifying reaction is improved.

Further, a third guide plate 11 is arranged in the aerobic internal reflux zone 10, the third guide plate 11 is obliquely arranged along the flowing direction of the water body, and turbulence is formed by impacting the third guide plate 11 when the water body flows, so that the mixing and reaction of the water body and aerobic microorganisms are promoted, and the first guide plate 5 can be welded with the cavity wall of the aerobic internal reflux zone 10 and also can be detachably connected through bolts.

On the basis of setting the aerobic zone 9 and the biological selection zone 4, the embodiment further enhances the water purifying effect, sets the transition zone 12, which is an inner space of the main body 26, the water body of the aerobic zone 9 enters the transition zone 12 from the top and flows back to the biological selection zone 4 from the bottom of the transition zone 12, the setting of the transition zone 12 enables the effluent of the aerobic zone 9 to flow back under the action of gravity, thereby reducing the power requirement of the water body flowing, so that the embodiment does not need to set an additional power device to drive the water body to flow, meanwhile, because the transition zone 12 is a non-aeration zone, the water body can be dynamically and statically separated in the transition zone 12, the sludge is primarily separated, settled, compressed and gathered from the water body, thereby promoting the granulation of the flocculent sludge, enabling the sludge to have adsorptivity, and flow back to the bottom, and the biological selection zone 4, and the backflow of the sludge can further enhance the pollutant removing effect in the biological selection zone 4, namely the biological selection effect, because the sludge has higher concentration of beneficial bacteria than the liquid in the effluent of the aerobic zone 9.

In this embodiment, the structure of the transition zone 12 is not particularly limited, preferably, as shown in fig. 1 and 2, a first partition board 21 is disposed in the main body 26, one side of the first partition board 21 forms the biological selection zone 4 and the transition zone 12, the other side of the first partition board 21 forms the aerobic zone 9, and the water in the aerobic zone 9 enters the transition zone 12 through the top of the first partition board 21, so that the internal structure of the main body 26 of this embodiment is more compact, and the internal space of the main body 26 is more reasonably utilized; of course, in other embodiments, the transition zone 12 may be tubular in configuration with the top end collecting effluent from the aerobic zone 9 and the bottom end communicating with the bioselective zone 4 or extending into the bioselective zone 4.

In this embodiment, the manner that the water body in the aerobic zone 9 enters the transition zone 12 is not limited, preferably, as shown in fig. 1 and fig. 4, a plurality of square through holes are uniformly formed at the top of the first partition board 21, and the water body in the aerobic zone 9 passes through the square through holes to enter the transition zone 12, so that on one hand, the water flow is uniform, and the dynamic primary separation of standing mud and water in the transition zone 12 is avoided, and on the other hand, the square through holes also play a screening role on the mud; of course, in other embodiments, the water in the aerobic zone 9 may enter the transition zone 12 by flowing over the first partition 21, and this may also make the water flow uniform.

Further, since the water body will carry gas after passing through the aerobic zone 9, the gas will influence the mixing and bio-competition process of the bio-selective zone 4 along with the water body backflow, and at the same time, the gas will also influence the subsequent water body purification process, such as precipitation treatment, and in addition, the equipment space will be occupied, so that the equipment water treatment capacity will be reduced, therefore, in the present embodiment, the degassing guide plate 13 for blocking the water body flow is arranged in front of the water body flow path in the transition zone 12, the water body forms an impact with the degassing guide plate 13 in the flowing process, and the gas carried by the water body is released in the impact process.

The structure of the deaeration guide 13 is not particularly limited in this embodiment, and it is preferable that the deaeration guide 13 includes a first end disposed perpendicular to the flow direction of the water body and a second end disposed obliquely along the flow direction of the water body as shown in fig. 1; the plurality of degassing guide plates 13 are alternately arranged along the flowing direction of the water body, the second ends are inclined towards the first ends in the flowing direction of the water body, the first ends are used for impacting the water body so as to release gas carried in the water body, the second ends play a role in guiding the flowing of the water body, and the direction of the water body is used for releasing the gas to the first ends, so that the degassing effect in the transition zone 12 is better, the gas can be discharged from the transition zone 12, the gas is prevented from being accumulated at dead corners formed by the degassing guide plates 13, and at least the first ends of the degassing guide plates 13 are provided with through holes for the gas to pass through; of course, in other embodiments, the degassing guide plate 13 may be simply a plate body provided obliquely, and provided with through holes for the gas to pass through.

In this embodiment, the structure of the transition zone 12 is not specifically limited, preferably, as shown in fig. 1, the lower ends of the first partition plate 21 and the third partition plate 28 are both obliquely arranged, so that the inner cavity of the transition zone 12 is at least partially bent to form an inclined portion 29, the bottom of the inclined portion 29 is communicated with the biological selection zone 4, on one hand, the inclined portion 29 increases the length of the transition zone 12, thereby increasing the residence time of the water body in the transition zone 12, enabling the water body to dynamically stand for a longer time for preliminary separation of mud and water, improving the effects of mud separation and granulation of flocculated sludge, and in addition, the inclined portion 29 also plays a role in guiding the sludge with adsorptivity to the communication position between the bottom of the transition zone 12 and the biological selection zone 4, so that the sludge with adsorptivity is convenient to enter the biological selection zone 4; of course, in other embodiments, the transition zone 12 may be a vertical space.

To further enhance the water purifying effect of the present embodiment, a sludge filtering layer area 14 is disposed in the main body 26, is communicated with the transition area 12, and is located above the biological selection area 4, so as to separate mud from water guided out by the transition area 12, thereby enhancing the water purifying effect; of course, in other embodiments, the effluent of the transition zone 12 may be directed out of the body 26.

In this embodiment, the structure of the sludge filtering layer area 14 is not particularly limited, and preferably, as shown in fig. 1, a third partition board 28 is disposed in the main body 26, the third partition board 28 is disposed on one side of the first partition board 21, the transition area 12 is formed between the first partition board 21 and the third partition board 28, and the sludge filtering layer area 14 is formed on one side of the third partition board 28 different from the transition area 12, so as to make the structure more compact.

In this embodiment, in order to enhance the water purifying effect, the top of the sludge filtering layer area 14 is further provided with the separation area 16, where the separation area 16 includes a plurality of inclined pipes arranged in parallel, so that suspended matters rising along with the water body in the sludge filtering layer area 14 are adsorbed on the inclined pipes after entering the inclined pipes, blocked by the inclined pipes, and fall after further aggregation, thereby further improving the water purifying effect and reducing suspended matters in the water outlet in this embodiment.

Further, a sludge balance pipe 15 is provided, the inlet end of the sludge balance pipe 15 is located in the sludge filtering layer area 14, the outlet end of the sludge balance pipe 15 is located in the biological selection area 4, sludge and suspended matters in the sludge filtering layer area 14 can be discharged into the biological selection area 4 through the sludge balance pipe 15, the content of the sludge and suspended matters in the sludge filtering layer area 14 is reduced, the burden of the separation area 16 is lightened, of course, more suspended matters in water are discharged from the sludge balance pipe 15, and larger sludge formed in the sludge filtering layer area 14 can fall back into the transition area 12 and further enter the biological selection area 4 through the openings of the transition area 12 and the biological selection area 4.

In order to further discharge the sludge in the sludge filtering layer area 14, a fourth partition board 24 is arranged in the sludge filtering layer area 14, an inlet of the sludge filtering layer area 14 is arranged in a space formed on one side of the fourth partition board 24, a sludge collecting area is formed on the other side of the fourth partition board 24, a sludge collecting hopper 25 is arranged in the sludge collecting area, and when the water body rises to the position above the fourth partition board 24 in the sludge filtering layer area 14, the water flow speed is instantaneously slowed down due to sudden expansion of a cavity, so that the aggregation and subsidence of residual flocculated sludge and suspended matters in the water body are promoted, and the residual flocculated sludge and suspended matters are led out from the sludge hopper 25.

As a preferred embodiment, as shown in fig. 1, a fourth partition 24 extends into the transition zone 12 and blocks the flow of water in the direction of flow of the water, on the one hand, to form an obstruction to the flow of water in the transition zone 12, forcing the water in the transition zone 12 into the sludge blanket zone 14, and on the other hand, to separate the transition zone 12 from the bioselective zone 4, to control the amount of reflux of the transition zone 12.

In this embodiment, the sludge discharge mode of the sludge receiving hopper 25 is not limited, as shown in fig. 1, the sludge receiving hopper 25 discharges sludge to the outside of the main body 26 through a sludge discharge pipe provided with a sludge discharge valve 7, and a sludge return pipe 19 provided with a sludge return valve 6 is provided, one end of the sludge return pipe 19, which is communicated with the sludge discharge pipe, is located between the sludge discharge valve 7 and the sludge receiving hopper 25, and the other end of the sludge return pipe extends into the biological selection area 4, so as to introduce sludge into the biological selection area 4, so that pollutants in water are removed by utilizing the adsorption effect of the sludge; of course, in other embodiments, only the sludge return pipe 19, or only the sludge discharge pipe, may be provided.

In order to further enhance the water purifying effect of this embodiment, a clean water weir groove 17 is disposed above the separation region 16, the clean water weir groove 17 is connected with the water outlet portion 18, and the clean water weir groove 17 makes the water outlet of this embodiment more uniform, and the water flow is more stable, so as to avoid the phenomenon of short flow and turbulence affecting the water outlet effect.

Compared with the prior art that the aerobic treatment devices are all arranged horizontally, the embodiment is of a vertical structure, and can effectively reduce the occupied area of the device; because the aerobic zone 9 is provided with the granular sludge, the aerobic zone 9 has higher biomass compared with the mode of only adopting the floccule sludge in the prior art, so that the water treatment capacity of the embodiment is higher; the sewage can be directly introduced into the embodiment, or an anoxic treatment device can be arranged in front of the embodiment, so that the water body after denitrification treatment is introduced into the embodiment.

Because a large amount of beneficial bacteria and nitrate are carried in the water body containing the sludge and flowing back from the aerobic zone 9, and nutrient substances are contained in the water inflow of the equipment, the beneficial bacteria are preferentially contacted with the nutrient substances and are propagated in a large amount in the mixing process of the biological selection zone 4, so that the non-beneficial bacteria are shielded, and the nitrate and a carbon source in the water inflow of the equipment can be subjected to denitrification reaction under the action of denitrifying bacteria, so that the effect of the water purification treatment of the embodiment is improved.

As a modification of this embodiment, partition plates 27 are provided in the bioselective zone 4 to partition the bioselective zone 4 into a first zone 3 and a second zone, wherein the first zone 3 is located above the second zone, the first zone 3 is connected to the water inlet portion 1 and the transition zone 12, the second zone is communicated with the aerobic zone 9, at this time, the first zone 3 is used as an anoxic zone, the water inlet portion 1 directly enters sewage, the anoxic denitrification reaction is mainly performed in the first zone 3, and then the biological selection is mainly performed in the second zone, and of course, the reactions performed in the first zone 3 and the second zone are broadly divided, and of course, biological selection is also performed in the first zone 3, and anoxic denitrification reaction is also performed in the second zone.

In the self-circulation continuous flow aerobic granular sludge purification treatment device provided in the embodiment, the flow path of the water body is as follows:

the water enters the main body 26 from the water inlet part 1, uniformly enters the biological selection area 4 under the action of the water distribution part 2, enters the aerobic area 9 after mixing and biological selection, is mixed in the aerobic area 9 in a longitudinal vortex mode under the driving of an air curtain generated by the aerator 8, then falls back into the aerobic internal reflux area 10 under the action of gravity and circulates into the aerobic area 9 in the ascending motion process of the outlet of the aerobic area 9, enters the transition area 12 after flowing out of the aerobic area 9, discharges gas in the transition area 12 through the impact of the water distribution part 2 and the degassing guide plate 13, enters the sludge filter layer area 14 after flowing out of the water in the transition area 12, a large part of water flows back into the biological selection area 14 through an opening formed between the fourth baffle 24 and the first baffle 21, and most of water in the sludge filter layer area 14 rises through the separation area 16 and enters the weir groove 17 and is discharged by the water outlet part 18, and at least carries sludge in the sludge filter layer area 14 through the biological balance pipe 25 or the sludge balance pipe 25.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. The self-circulation continuous flow aerobic granular sludge purifying treatment device is characterized by comprising the following components:

a main body (26) provided with a water inlet (1) and a water outlet (18);

a biological selection area (4) which is arranged in the internal space of the main body (26) and is communicated with the water inlet part (1);

an aerobic zone (9) arranged in the internal space of the main body (26), communicated with the biological selection zone (4) and positioned at the downstream of the biological selection zone (4), wherein part of water flowing out of the aerobic zone (9) is suitable for flowing back into the biological selection zone (4);

the water outlet end of the water inlet part (1) and the opening of the aerobic zone (9) for refluxing to the biological selection zone (4) are arranged above the water outlet end of the biological selection zone (4);

further comprises:

a first partition board (21) arranged inside the main body (26), wherein one side of the first partition board (21) forms a transition zone (12), and the other side of the first partition board (21) forms the aerobic zone (9);

The water body in the aerobic zone (9) enters the transition zone (12) through the top and flows back to the biological selection zone (4) from the bottom of the transition zone (12).

2. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 1, wherein a water stirring device is arranged in the biological selection area (4).

3. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 2, wherein the water stirring device comprises: and the first guide plates (5) are arranged in front of the water body flow path.

4. A self-circulating continuous flow aerobic granular sludge purification treatment device according to claim 3, characterized in that the first guide plates (5) are oppositely arranged on the cavity wall constituting the biological selection zone (4), the lower ends of a plurality of the first guide plates (5) are inclined toward the bottom of the biological selection zone (4), and a plurality of the first guide plates (5) are alternately arranged in the height direction.

5. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 1, wherein a water distribution member (2) is arranged at the outlet of the water inlet part (1).

6. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 1, characterized in that a degassing guide plate (13) is arranged in the transition zone (12), and the degassing guide plate (13) is positioned in front of a water body flow path in the transition zone (12).

7. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 6, wherein the degassing guide plate (13) comprises: a first end arranged perpendicular to the water flow direction, and a second end obliquely arranged along the water flow direction; the plurality of degassing guide plates (13) are alternately arranged along the water body flowing direction, and the second ends of the degassing guide plates (13) incline towards the first end in the water body flowing direction.

8. The self-circulating continuous-flow aerobic granular sludge purification treatment device of claim 5, wherein the inner cavity of the transition zone (12) is at least partially folded to form an inclined portion (29), the bottom of the inclined portion (29) being in communication with the bioselective zone (4).

9. The self-circulating continuous flow aerobic granular sludge purification treatment device according to claim 1, characterized in that an aeration device is arranged in the aerobic zone (9), and the aeration device comprises:

the air-conditioner comprises an aerator (8), a plurality of aerators (8) are communicated through an air circuit pipeline, and the aerators (8) are arranged in a parallel multi-row structure.

10. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 9, wherein a second guide plate (22) is arranged in the aerobic zone (9), and the second guide plate (22) is positioned in the flowing direction of the water body generated by the aerator (8).

11. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 9, wherein a second partition plate (23) is arranged in the aerobic zone (9), one side of the second partition plate (23) forms an aerobic internal reflux zone (10), and the space formed by the other side of the second partition plate (23) is internally provided with the aeration device.

12. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 11, wherein a third guide plate (11) is arranged in the aerobic internal reflux zone (10), and the third guide plate (11) is obliquely arranged along the flowing direction of the water body.

13. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 1, further comprising:

the third baffle (28) is arranged on one side of the first baffle (21), a transition zone (12) is formed between the first baffle (21) and the third baffle (28), a sludge filtering layer zone (14) is formed on one side, different from the transition zone (12), of the third baffle (28), and the sludge filtering layer zone (14) is communicated with the transition zone (12) and is located above the biological selection zone (4).

14. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 13, wherein a separation zone (16) is provided at the top of the sludge blanket zone (14), the separation zone (16) comprising: a plurality of inclined pipes arranged in parallel.

15. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 13 or 14, further comprising:

the sludge balance pipe (15), the entry end of sludge balance pipe (15) is located in sludge filtering layer district (14), the exit end of sludge balance pipe (15) is located in biological selection district (4).

16. The self-circulation continuous flow aerobic granular sludge purification treatment device according to claim 13, wherein a fourth partition plate (24) is arranged in the sludge filtering layer area (14), an inlet of the sludge filtering layer area (14) is arranged in a space formed on one side of the fourth partition plate (24), a sludge collecting area is formed on the other side of the fourth partition plate (24), and a sludge collecting hopper (25) is arranged in the sludge collecting area.

17. The self-circulating continuous flow aerobic granular sludge purification treatment device of claim 16 wherein the fourth partition (24) extends into the transition zone (12) and is blocked in the direction of flow of the body of water.