CN113968620B

CN113968620B - Self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device

Info

Publication number: CN113968620B
Application number: CN202110713289.1A
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: 2024-01-02
Anticipated expiration: 2041-06-25
Also published as: CN113968620A

Abstract

A self-circulation continuous flow two-oxygen composite particle 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 anoxic zone is arranged in the internal space of the main body; the water body accelerating tube is arranged in the anoxic zone and connected with the water inlet part, and at least one part of the inner diameter of the water body accelerating tube is reduced along the flowing direction of the water body; the circulating pipe is arranged in the anoxic zone and covered outside the water accelerating pipe, and two ends of the circulating pipe along the flowing direction of the water body are respectively provided with a circulating water inlet and a circulating water outlet, and the circulating water inlet is communicated with the water inlet part. According to the invention, the water accelerating tube and the circulating tube are arranged to form hydraulic circulation stirring, so that the water is fully mixed with denitrifying bacteria in the anoxic zone, the contact probability of the denitrifying bacteria and the water is improved, a good denitrification reaction is generated, and the problems that the energy consumption is high due to the arrangement of the stirring device or the dissolved oxygen content is difficult to control due to the arrangement of the aeration device are avoided.

Description

Self-circulation continuous flow two-oxygen composite particle 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 two-oxygen composite particle sludge purifying treatment device.

Background

The internal process of the existing biochemical water treatment equipment 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 need to be stirred in an anoxic section to generate good denitrification reaction.

In the prior art, in order to fully stir the water body in the anoxic section, the following two modes are generally adopted, one mode is to adopt a submersible stirring device, but the device needs additional power consumption, particularly, in order to uniformly stir the water body, more devices are required to be arranged to meet the stirring effect, so that the mode has larger energy consumption and is not beneficial to environmental protection; the other is to adopt micro-gas aeration stirring, the power consumption is lower in this way, but because aeration is needed in the anoxic section, the dissolved oxygen content in the section is not well controlled, and the denitrification effect is further affected.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of large energy consumption or difficult control of the content of dissolved oxygen caused by the stirring mode of the anoxic section of the biochemical water treatment equipment in the prior art, thereby providing the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device.

The invention provides the following technical scheme:

the self-circulation continuous flow two oxygen composite particle sludge purifying treatment device comprises:

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

an anoxic zone disposed in an inner space of the main body;

the water body accelerating tube is arranged in the anoxic zone, is connected with the water inlet part and reduces at least one part of the inner diameter of the water body accelerating tube along the flowing direction of the water body;

the circulating pipe is arranged in the anoxic zone and covered outside the water accelerating pipe, two ends of the circulating pipe along the flowing direction of the water body are respectively provided with a circulating water inlet and a circulating water outlet, and the circulating water inlet is communicated with the water inlet part.

Optionally, the water body accelerating tube is arranged in a conical shape along the flowing direction of the water body at least a part of the water body accelerating tube.

Optionally, the circulation tube has at least a portion of its inner diameter reduced in the direction of water flow.

Optionally, the circulation tube is tapered along the water flow direction, at least a portion of the circulation tube.

Optionally, the anoxic zone comprises:

a mixing zone within which the circulation tube is disposed;

the reaction zone is communicated with the mixing zone through a channel;

the first return pipe is correspondingly arranged in the reaction zone, a return water inlet end and a return water outlet end are arranged on the first return pipe, and the return water outlet end is communicated with the circulating pipe or the water body accelerating pipe.

Optionally, when the backflow water outlet end is communicated with the water body accelerating tube, the backflow water outlet end extends to a part with the reduced inner diameter of the water body accelerating tube.

Optionally, the channel is located at an end of the anoxic zone remote from the circulation water outlet of the circulation pipe.

Optionally, the channel is bent, and the bent end of the channel extends towards the direction of the circulating water outlet of the circulating pipe.

Optionally, a first guide plate is arranged in the reaction zone, and extends towards the water outlet of the channel.

Optionally, the self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device further comprises:

an aerobic zone baffle, wherein one side of the aerobic zone baffle forms an aerobic zone, the other side forms an anoxic zone, and an aeration device is arranged in the aerobic zone.

Optionally, the water inlet end of the first return pipe is provided with a collecting pipe, the inner diameter of the collecting pipe is larger than that of the first return pipe, and the collecting pipe is communicated with the aerobic zone through an aerobic zone water inlet pipe.

Optionally, a first water distribution piece is arranged at the outlet of the water inlet pipe of the aerobic zone.

Optionally, the first water distribution member is inclined towards the aerobic zone baffle.

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

Optionally, the aeration device includes:

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.

the transition zone partition board is arranged in the aerobic zone, a transition zone is formed on one side of the transition zone partition board, the aerobic zone is formed on the other side of the transition zone partition board, the top and the bottom of the transition zone are communicated with the aerobic zone, and water rising through the aerobic zone enters the transition zone through the top and flows out from the bottom of the transition zone.

Optionally, 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 aerobic zone.

Optionally, an air blocking plate is arranged at the opening part of the bottom of the transition zone, which is communicated with the aerobic zone, and the air blocking plate is positioned in the aerobic zone.

and the inlet end of the second return pipe is positioned in the transition zone, and the outlet end of the second return pipe is communicated with the circulating pipe or the water body accelerating pipe.

Optionally, when the outlet end of the second return pipe is communicated with the water accelerating pipe, the outlet end of the second return pipe extends to the part with the reduced inner diameter of the water accelerating pipe.

Optionally, a mud guard is arranged above the inlet of the second return pipe, the mud guard is bent to form a mud blocking space, and the inlet of the second return pipe is arranged in the mud blocking space.

and the first sedimentation zone is communicated with the transition zone and is positioned above the anoxic zone.

Optionally, a flow guiding device is arranged at the top of the first sedimentation zone, the flow guiding device comprises a plurality of inclined flow guiding plates which are arranged in parallel, and a flow guiding space is formed between every two adjacent flow guiding plates.

and a sludge reflux control plate is arranged between the sludge reflux control plate and the cavity wall at one side of the first sedimentation zone, and the sludge reflux channel is communicated with the aerobic zone through the openings of the transition zone and the aerobic zone.

Optionally, the sludge return control panel extends into the transition zone and is blocked in the direction of flow of the body of water.

Optionally, a second water distribution member is arranged at the inlet of the first sedimentation zone.

the second sedimentation zone is communicated with the first sedimentation zone, and at the communication position, the inner cavity of the second sedimentation zone is larger than the outlet area of the first sedimentation zone;

and a sludge hopper is arranged in the second sedimentation zone and is communicated with the circulating pipe or the water accelerating pipe.

Optionally, when the sludge hopper is communicated with the water accelerating tube, the outlet end of the sludge hopper extends to the part with the reduced inner diameter of the water accelerating tube.

Optionally, a baffle is arranged on one side of the flow guiding device, which is close to the sludge hopper, and a plurality of rectangular checkboxes are uniformly arranged on the top of the baffle.

Optionally, a separation zone is disposed at the top of the second settling zone, and the separation zone includes: a plurality of angled tubes clustered together.

Optionally, the inclined tube and the guide plate are arranged in a non-parallel manner.

Optionally, a clean water weir groove is formed in the top of the separation area, and the clean water weir groove is connected with the water outlet part.

The technical scheme of the invention has the following advantages:

1. the invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, which comprises a main body, a water inlet part and a water outlet part, wherein the main body is provided with a water inlet part and a water outlet part; an anoxic zone disposed in an inner space of the main body; the water body accelerating tube is arranged in the anoxic zone, is connected with the water inlet part and reduces at least one part of the inner diameter of the water body accelerating tube along the flowing direction of the water body; the circulating pipe is arranged in the anoxic zone and covered outside the water accelerating pipe, two ends of the circulating pipe along the flowing direction of the water body are respectively provided with a circulating water inlet and a circulating water outlet, and the circulating water inlet is communicated with the water inlet part.

According to the invention, the water body containing sewage enters the anoxic zone from the water inlet part by arranging the water body accelerating tube, and as at least one part of the inner diameter of the water body accelerating tube is reduced, the instantaneous flow velocity of the water body is increased, and the flow velocity of the water body is further improved, so that the flow velocity requirement of the water body for hydraulic circulation stirring is met.

The circulating pipe is covered outside the water accelerating pipe, so that the accelerated water enters the circulating pipe and enters the anoxic zone from the circulating water outlet, and the circulating pipe is provided with the circulating water inlet, so that the water sprayed into the anoxic zone from the circulating water outlet enters the circulating pipe again through the circulating water inlet, so that the water forms hydraulic circulating stirring in the anoxic zone.

2. The self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device provided by the invention has the advantages that the water body accelerating tube is arranged in a conical shape along the flowing direction of the water body at least partially.

According to the invention, at least one part of the water body accelerating tube is arranged in a conical shape, so that at least one part of the inner diameter of the water body accelerating tube is reduced, the instantaneous flow velocity of the water body is further increased, the flow velocity of the water body is further improved, the low pressure is generated at the outlet of the water body accelerating tube according to the Bernoulli principle, and the conical shape has a guiding function, so that compared with the rectangular shape, the resistance generated by the impact of the water body at the position can be effectively reduced, and the loss of the power of the water body is avoided.

3. The self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device provided by the invention has the advantages that at least one part of the inner diameter of the circulation pipe is reduced along the water body flowing direction.

According to the invention, at least a part of the inner diameter of the circulating pipe is reduced, so that the instant flow velocity of the water sprayed by the water accelerating pipe and the water re-entering the circulating pipe from the anoxic zone is increased, the flow velocity of the water is further improved, so that the flow velocity requirement of the water for hydraulic circulating stirring is met, and meanwhile, the water accelerating requirement of the circulating pipe on the water can be reduced by re-accelerating the water, so that the flow velocity requirement of the water entering the water accelerating pipe is reduced, and the power and energy consumption required by the water entering the water accelerating pipe are reduced.

4. The self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device provided by the invention has the advantages that at least one part of the circulation pipe is arranged in a conical manner along the water body flowing direction.

According to the invention, at least one part of the circulating pipe is arranged in a conical shape, so that at least one part of the inner diameter of the circulating pipe is reduced, the instantaneous flow velocity of the water body is increased, the flow velocity of the water body is further improved, and the conical shape has a guiding effect, so that compared with the rectangular shape, the conical shape can effectively reduce the resistance generated by the impact of the water body at the position, and avoid the loss of the power of the water body.

5. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein the anoxic zone comprises a mixing zone, and a circulation pipe is arranged in the mixing zone; the reaction zone is communicated with the mixing zone through a channel; the first return pipe is correspondingly arranged in the reaction zone, a return water inlet end and a return water outlet end are arranged on the first return pipe, and the return water outlet end is communicated with the circulating pipe or the water body accelerating pipe.

According to the invention, the anoxic zone is arranged as a communicated mixing zone and a reaction zone, the hydraulic circulation stirring formed by the circulation pipe is positioned in the mixing zone, and the velocity of water in the mixing zone is high due to the acceleration effect of the water accelerating pipe, so that the denitrification reaction effect in the mixing zone is low, therefore, the reaction zone with relatively reduced velocity of water is arranged in the anoxic zone, so that the water can fully perform denitrification reaction in the reaction zone, further the anoxic zone can fully perform denitrification reaction, meanwhile, the first return pipe is arranged to be communicated with the circulation pipe or the water accelerating pipe, so that a part of water in the reaction zone returns to the circulation pipe or the water accelerating pipe through the first return pipe to participate in the hydraulic circulation stirring again, further, the dominant denitrification strain formed in the reaction zone can reach the circulation pipe or the water accelerating pipe through the first return pipe, so that the water sprayed out by the water accelerating pipe can be directly mixed and diffused with the dominant denitrification, and the strain selection time in the anoxic zone is greatly shortened.

6. According to the self-circulation continuous flow two-oxygen composite granular sludge purification treatment device provided by the invention, when the backflow water outlet end is communicated with the water body accelerating tube, the backflow water outlet end extends to the part with the reduced inner diameter of the water body accelerating tube.

The invention extends the backflow water outlet end to the part with reduced inner diameter of the water body accelerating tube, so that the water body introduced into the water body accelerating tube by the water inlet part is prevented from directly entering the backflow water outlet end, thereby influencing the reaction process of the anoxic zone and the water purifying effect of the device, and preventing the water outlet of the backflow water outlet end from obstructing the water body introduced into the water body accelerating tube by the water inlet part.

7. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention has the advantages that the channel is positioned at one end of the anoxic zone, which is far away from the circulating water outlet of the circulating pipe.

The invention sets the channel at one end of the anoxic zone far away from the circulating water outlet of the circulating pipe, and avoids the water sprayed by the circulating pipe from directly entering the reaction zone without participating in hydraulic circulating stirring, thereby influencing the mixing effect of denitrifying bacteria and the water, and further influencing the effect of denitrification reaction.

8. According to the self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention, the channel is bent, and the bent end of the channel extends towards the direction of the circulating water outlet of the circulating pipe.

The channel is bent, the bent end extends towards the direction of the circulating water outlet of the circulating pipe, so that the channel forms a blocking effect, on one hand, beneficial sludge is blocked to remain in the mixing area and used for participating in hydraulic circulating stirring and purifying water, on the other hand, a large amount of water can be blocked from entering the reaction area, the water quantity of the mixing area and the hydraulic circulating stirring is ensured, and in addition, the water outlet at the opening of the channel in the reaction area is in a sweeping flow state, so that sludge accumulation in the reaction area can be prevented.

9. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention is characterized in that a first guide plate is arranged in the reaction zone, and extends towards the water outlet of the channel.

The first guide plate is arranged in the reaction zone, so that water entering the reaction zone from the channel is impacted on the first guide plate, the flow direction and the flow velocity of the water are changed, and the mixing of the water and denitrifying bacteria is further promoted.

10. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, which also comprises an aerobic zone baffle, wherein one side of the aerobic zone baffle forms an aerobic zone, the other side forms an anoxic zone, and an aeration device is arranged in the aerobic zone.

The invention is provided with the aerobic zone, so that the water body enters the aerobic zone to carry out the nitrification reaction after the denitrification reaction is carried out in the anoxic zone, thereby the water treatment effect of the device is better, and the effluent of the water outlet part is purer.

11. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein a collecting pipe is arranged at the reflux water inlet end of a first return pipe, the inner diameter of the collecting pipe is larger than that of the first return pipe, and the collecting pipe is communicated with an aerobic zone through an aerobic zone water inlet pipe.

According to the invention, the collecting pipe is arranged at the reflux water inlet end of the first reflux pipe, and the aerobic zone water inlet pipe which is communicated with the aerobic zone and the anoxic zone is arranged on the collecting pipe, so that the inlet of the aerobic zone water inlet pipe is positioned above the inlet of the first reflux pipe, and meanwhile, the inner diameter of the collecting pipe is larger than that of the first reflux pipe, so that the water body in the collecting pipe firstly meets the reflux requirement of the first reflux pipe, and then enters the aerobic zone through the aerobic zone water inlet pipe after meeting the reflux requirement, thereby ensuring that sufficient dominant denitrification strains reach the circulating pipe or the water body accelerating pipe through the first reflux pipe, and ensuring the denitrification effect.

12. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein a first water distribution piece is arranged at the outlet of a water inlet pipe of an aerobic zone.

According to the invention, the first water distribution member is arranged at the outlet of the water inlet pipe of the aerobic zone, so that the water outlet of the water inlet pipe of the aerobic zone firstly collides with the first water distribution member and enters the aerobic zone after being subjected to the water distribution effect of the first water distribution member, the water distribution effect of the first water distribution member can ensure that the water inlet of the aerobic zone is uniform, the circulation in the aerobic zone is prevented from being influenced, and the nitrification reaction effect in the aerobic zone is further ensured.

13. According to the self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention, the first water distribution piece is inclined towards the baffle plate of the aerobic zone.

The first water distribution part of the invention inclines towards the baffle plate of the aerobic zone, so that the inflow water of the aerobic zone flows down along the baffle plate of the aerobic zone, the inflow water of the aerobic zone is prevented from impacting the circulation in the aerobic zone, the nitrification reaction effect in the aerobic zone is ensured, in addition, in the process that the inflow water of the aerobic zone flows down to the bottom of the aerobic zone along the baffle plate of the aerobic zone, the inflow water is contacted with the rising gas generated by the aeration device to perform pre-oxygen supply, thereby improving the speed and the effect of the subsequent nitrification reaction.

14. The end part of the first water distribution piece is provided with a tooth shape.

The end part of the first water distribution member is provided with the tooth shape, so that on one hand, the water distribution function is realized, the water inflow is more uniform, on the other hand, the cutting function is realized on the flocs or sludge in the water inflow, the formation of granular sludge in an aerobic zone is promoted, and the water purification effect is improved.

15. The invention provides a self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device, which 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.

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 a gas 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 gas curtains, the mixing and reaction of the water body and nitrifying bacteria are promoted by the circulating mixing effect of the longitudinal vortex flows, and meanwhile, the longitudinal vortex flows are favorable for the suspension and hydraulic scrubbing of the granular bodies, so that the generation of granular sludge is promoted, the mixed state benefit in the aerobic zone is improved, and the water purifying effect is further improved.

16. The invention provides a self-circulation continuous flow two-oxygen composite 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 water and nitrifying bacteria's mixing and reaction through the cyclic mixing effect of the longitudinal eddies, the longitudinal eddies are favorable to suspension and hydraulic scrubbing of the granule body at the same time, thus promote the generation of the granule mud, therefore has improved the mixed state benefit in the aerobic zone, and then promoted the water purification effect.

Meanwhile, the second guide plate plays a role in blocking granular sludge in the aerobic zone, so that the granular sludge is reserved in the aerobic zone, the concentration of the granular sludge in the aerobic zone is increased, the aerobic zone has higher biomass, the treatment capacity of the aerobic zone is enhanced, the water treatment capacity of the aerobic zone is improved, and in addition, under the condition that the water treatment capacity is certain, the volume of the aerobic zone can be reduced due to stronger treatment capacity of the aerobic zone, and the aerobic zone has smaller volume and smaller occupied area compared with the prior art.

17. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, which also comprises a transition zone partition board, wherein the transition zone partition board is arranged in an aerobic zone, a transition zone is formed on one side of the transition zone partition board, an aerobic zone is formed on the other side of the transition zone partition board, the top and the bottom of the transition zone are communicated with the aerobic zone, and water rising through the aerobic zone enters the transition zone through the top and flows out from the bottom of the transition zone.

According to the invention, the transition zone is formed by arranging the transition zone partition plate in the aerobic zone, so that the water body rising in the aerobic zone enters the transition zone through the top, and as the transition zone is a non-aeration zone, the water body can be subjected to dynamic standing mud-water preliminary separation in the transition zone, and sludge is settled, compressed and gathered from the water body, so that granulation of flocculent sludge is promoted, meanwhile, granular sludge with better settling property can return to the aerobic zone through the bottom of the transition zone, so that granular sludge and nitrifying bacteria in the aerobic zone are supplemented, and the water purifying effect of the aerobic zone is improved; in addition, the transition zone fully utilizes the space of the aerobic zone, and improves the space utilization rate of the device.

18. According to the self-circulation continuous flow two-oxygen composite granular sludge purifying 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 aerobic 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 further increased, the time for dynamic standing mud-water preliminary separation of the water body is further increased, mud-water separation and flocculent sludge granulation effects are improved, meanwhile, the inclined part also plays a role in guiding, so that the granular sludge with better sedimentation property is guided to the communicating part between the bottom of the transition zone and the aerobic zone, and the granular sludge with better sedimentation property is conveniently moved into the aerobic zone.

19. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein an air blocking plate is arranged at the bottom of a transition zone and is communicated with an opening of an aerobic zone, and the air blocking plate is positioned in the aerobic zone.

According to the invention, the choke plate is arranged at the opening part of the bottom part of the transition zone, which is communicated with the aerobic zone, so that gas in the aerobic zone is prevented from entering the transition zone from the opening part, and the dynamic static mud-water preliminary separation process of the water body is disturbed.

20. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, which also comprises a second return pipe, wherein the inlet end of the second return pipe is positioned in the transition zone, and the outlet end of the second return pipe is communicated with the circulation pipe or the water body accelerating pipe.

The invention sets the second return pipe to return the nitrified liquid in the transition zone to the circulating pipe or the water accelerating pipe, thereby improving the denitrification reaction effect in the anoxic zone, and simultaneously the nitrified liquid in the transition zone enters the circulating pipe due to the pressure difference formed by the water, thereby saving more energy sources compared with the extraction mode in the prior art.

21. According to the self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention, when the outlet end of the second return pipe is communicated with the water body accelerating pipe, the outlet end of the second return pipe extends to the part with the reduced inner diameter of the water body accelerating pipe.

The outlet end of the second return pipe extends to the part with the reduced inner diameter of the water body accelerating pipe, so that the water body introduced into the water body accelerating pipe by the water inlet part is prevented from directly entering the second return pipe, the water body in the transition area is disturbed, the water purifying effect of the device is affected, and in addition, the water outlet of the second return pipe can be prevented from blocking the water body introduced into the water body accelerating pipe by the water inlet part.

22. According to the self-circulation continuous flow two-oxygen composite granular sludge purification treatment device provided by the invention, the mud guard is arranged above the inlet of the second return pipe, the mud guard is bent to form a mud guard space, and the inlet of the second return pipe is arranged in the mud guard space.

According to the invention, the mud guard is arranged, and the inlet of the second return pipe is arranged in the mud guard space formed by the mud guard, so that granular sludge and large-volume floccule sludge are prevented from entering the second return pipe, the reaction space occupied by invalid sludge in an anoxic zone is avoided, and the treatment water quantity of the device is reduced.

23. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention further comprises a first sedimentation zone which is communicated with the transition zone and is positioned above the anoxic zone.

According to the invention, the first sedimentation zone is arranged to separate mud from water introduced from the transition zone, so that the water purifying effect is improved, and in addition, the first sedimentation zone is arranged above the anoxic zone, so that the space utilization rate of the device is improved.

24. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein a flow guiding device is arranged at the top of a first sedimentation zone and comprises a plurality of inclined flow guiding plates which are arranged in parallel, and a flow guiding space is formed between every two adjacent flow guiding plates.

The guiding device plays a role in guiding the water body in the first sedimentation zone, so that the water body in the first sedimentation zone uniformly flows out of the first sedimentation zone under the guiding action, meanwhile, the guiding device also plays a role in blocking the discharge of sludge in the water body on one hand, on the other hand, the water body in the first sedimentation zone is in a dynamic suspension state, the contact probability of sludge and organic matters in the water body is further increased, the flocculated sludge in the water body is further gathered and compressed, granulation of the flocculated sludge is promoted, most of the flocculated sludge and all granular sludge can be trapped in the first sedimentation zone, and suspended matters in water are reduced.

25. The self-circulation continuous flow two-oxygen composite particle sludge purifying treatment device provided by the invention further comprises a sludge reflux control board, a sludge reflux channel is formed between the sludge reflux control board and the cavity wall at one side of the first sedimentation zone, and the sludge reflux channel is communicated with the aerobic zone through the openings of the transition zone and the aerobic zone.

According to the invention, the sludge reflux control board is arranged to form a sludge reflux channel in the first sedimentation zone, so that granular sludge and larger floccule sludge which are further formed below the flow guiding device enter the aerobic zone from the sludge reflux channel, the granular sludge and nitrifying bacteria in the aerobic zone are supplemented, and the water purifying effect of the aerobic zone is improved.

26. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, the sludge reflux control plate extends into the transition zone and is blocked in the flowing direction of the water body.

The sludge reflux control 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 first sedimentation zone, and on the other hand, the disturbance of the water flow in the transition zone to granular sludge and larger flocculated sludge falling back from the sludge reflux channel is avoided, and the water flow in the transition zone is influenced to enter the aerobic zone.

27. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein a second water distribution piece is arranged at the inlet of a first sedimentation zone.

According to the invention, the second water distribution piece is arranged at the inlet of the first sedimentation zone, so that water in the transition zone uniformly enters the first sedimentation zone, and the influence on the dynamic suspension state in the first sedimentation zone is avoided.

28. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention further comprises a second sedimentation zone, wherein the second sedimentation zone is communicated with the first sedimentation zone, and the inner cavity of the second sedimentation zone is larger than the outlet area of the first sedimentation zone at the communication position; and a sludge hopper is arranged in the second sedimentation zone and is communicated with the circulating pipe or the water accelerating pipe.

The invention is provided with the second sedimentation zone, and the inner cavity of the second sedimentation zone is larger than the outlet area of the first sedimentation zone, so that the effluent of the first sedimentation zone is instantaneously slowed down, thereby promoting the aggregation and subsidence of the residual flocs in the water body, leading out the flocs from the sludge hopper, reducing suspended matters in the effluent of the device and improving the water purifying effect of the device; meanwhile, the sludge hopper is communicated with the circulating pipe or the water accelerating pipe, so that strains in the anoxic zone can be supplemented, and the denitrification reaction effect in the anoxic zone is ensured.

29. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, when the sludge hopper is communicated with the water body accelerating tube, the outlet end of the sludge hopper extends to the part with the reduced inner diameter of the water body accelerating tube.

The outlet end of the sludge bucket extends to the part with the reduced inner diameter of the water accelerating tube, so that the water which is introduced into the water accelerating tube by the water inlet part is prevented from directly entering the sludge bucket and the second sedimentation zone, the water in the second sedimentation zone is disturbed, the water purifying effect of the device is affected, and in addition, the water outlet of the sludge bucket and the water which is introduced into the water accelerating tube by the sludge can be prevented from being blocked.

30. According to the self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention, the baffle is arranged on one side of the flow guiding device, which is close to the sludge hopper, and a plurality of rectangular weir crest are uniformly arranged on the top of the baffle.

The baffle is arranged on one side of the flow guiding device, which is close to the sludge hopper, so that the effluent of the first sedimentation zone flows and diffuses uniformly and stably into the second sedimentation zone, the disturbance of the water body in the second sedimentation zone is avoided, and the residual flocculated sludge in the water body is convenient to gather and sink; the rectangular weir mouth plays a screening role, so that sludge flocs which are further gathered and subsided in the water body in the second sedimentation zone are uniformly dropped into the sludge hopper under the screening role.

31. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device, wherein a separation area is arranged at the top of a second sedimentation area, and the separation area comprises a plurality of inclined pipes which are gathered together.

According to the invention, the separation area is arranged to separate the flocculated sludge in the water body, when the flocculated sludge rises along with the water body, the flocculated sludge is blocked by the inclined tube after entering the inclined tube and can be adsorbed on the inclined tube, and further gathered and falls down, so that the water purifying effect can be further improved.

32. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention is characterized in that the inclined tube and the guide plate are arranged in a non-parallel manner.

The inclined tube and the guide plate are arranged in a non-parallel manner, so that the water discharged by the guide device can be prevented from being directly discharged from the inclined tube along the flowing direction, and the water purifying effect is reduced.

33. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device provided by the invention is characterized in that the top of the separation zone is provided with a clean water weir groove, and the clean water weir groove is connected with the 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 cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction C-C in FIG. 1;

FIG. 5 is a top view of embodiment 1 of the present invention;

FIG. 6 is a schematic view of the structure of the K1 direction in FIG. 1;

FIG. 7 is a schematic view of the structure in the direction K2 in FIG. 1;

fig. 8 is a schematic structural view of a fender according to embodiment 1 of the present invention.

Reference numerals illustrate:

1. a water inlet part; 2. a circulation pipe; 3. a mixing zone; 4. a channel; 5. a first guide plate; 6. a reaction zone; 7. a collection pipe; 8. a first return pipe; 9. a water inlet pipe of the aerobic zone; 10. the first water distribution piece; 11. an aerobic zone; 12. an aerator; 13. a second guide plate; 14. a perforated plate; 15. a transition zone; 16. a mud guard; 17. a second return pipe; 18. the second water distribution piece; 19. a first settling zone; 20. a sludge reflux control plate; 21. a shutter; 22. a flow guiding device; 23. a blocking member; 24. a separation zone; 25. a clear water weir trough; 26. a water outlet part; 27. a sludge hopper; 28. a sludge return branch pipe; 29. a sludge return pipe; 30. a sludge discharge pipe; 31. a second evacuation tube; 32. a first evacuation tube; 33. an exhaust valve; 34. a sludge collecting pipe; 35. a choke plate; 36. a sludge return channel; 37. a second settling zone; 38. a main body; 39. a water body accelerating tube; 40. a transition zone separator.

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 the like are used merely for distinguishing between them and should not be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "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 two-oxygen composite particle sludge purifying treatment device, as shown in fig. 1-8, which comprises a main body 38, a water inlet part 1 and a water outlet part 26, wherein the water inlet part 1 is used for introducing a water body containing sewage into the main body 38, and the water outlet part 26 is used for introducing the water body treated by the device; the material of the main body 38 is not limited in this embodiment, and steel structure, concrete structure, polymer material, etc. may be used.

The anoxic zone is arranged in the inner space of the main body 38 and used for denitrification reaction of water, the exhaust valve 33 is arranged at the top of the anoxic zone to exhaust gas generated by water impact and denitrification reaction, so that the gas is prevented from occupying the anoxic zone space, the treated water volume of the embodiment is reduced, and the anoxic zone is also provided with the first emptying pipe 32 communicated with the outside of the main body 38 and used for emptying the anoxic zone in maintenance and cleaning.

The water accelerating tube 39 is arranged in the anoxic zone and can be welded at the bottom of the main body 38, and can be detachably connected with the bottom of the main body 38 through bolts, the water accelerating tube 39 is connected with the water inlet part 1, at least one part of the inner diameter of the water accelerating tube 39 is reduced along the flowing direction of water so as to accelerate the water, thereby meeting the flow speed requirement of the water for hydraulic circulation stirring, further, the embodiment does not need to be provided with an additional auxiliary power device, the part of the water accelerating tube 39 with smaller inner diameter can be positioned at the middle part or the water outlet end, the embodiment is preferably arranged at the water outlet end, the transition part with the changed inner diameter is in a conical shape for reducing the resistance of the water flowing, the section of the water accelerating tube 39 can be in a rectangular shape, a polygonal shape, a circular shape and the like, and the embodiment adopts a circular shape for avoiding the generation of dead angles of the tube wall of the water accelerating tube 39.

The circulating pipe 2 is arranged in the anoxic zone, and is preferably supported above the bottom of the main body 38 through a bracket, the circulating pipe 2 is covered outside the water accelerating pipe 39, two ends of the circulating pipe 2 along the flowing direction of the water are respectively provided with a circulating water inlet and a circulating water outlet, gaps are respectively arranged between the circulating water inlet and the water accelerating pipe 39 and the bottom wall of the anoxic zone, so that the circulating water inlet is communicated with the water inlet part 1, the water accelerated by the water accelerating pipe 39 enters the circulating pipe 2 and then enters the anoxic zone from the circulating water outlet, the water accelerating pipe 39 reduces at least partially through the inner diameter to increase the water flow rate at the outlet, and the water pressure at the outlet of the water accelerating pipe 39 is relatively low according to the Bernoulli principle, so that the water in the anoxic zone can enter the circulating pipe 2 again through the gaps at the water inlet part under the pushing action of the pressure effect and the water, the water is subjected to form hydraulic circulating stirring in the anoxic zone, the contact probability of denitrifying bacteria and the water is improved through the hydraulic circulating stirring, the water is fully mixed with the denitrifying bacteria in the anoxic zone, and good denitrifying reaction is generated.

The specific structure of the circulating pipe 2 is not limited in this embodiment, and may be a straight pipe, preferably, at least a part of the inner diameter of the circulating pipe 2 is reduced along the flowing direction of the water body, so that the water body re-entering the circulating pipe 2 from the anoxic zone and the water body sprayed from the water body accelerating pipe 39 are accelerated, the flow velocity of the water body is further improved, the water body is ensured to continuously perform hydraulic circulation stirring, meanwhile, the requirement of the water body accelerating pipe 39 on the acceleration of the water body is reduced, and the flow velocity requirement of the water body entering the water body accelerating pipe 39 is reduced, so that the power and energy consumption required for introducing the water body into the water body accelerating pipe 39 are reduced, and further, the transition part with the changed inner diameter of the circulating pipe 2 is in a conical shape for reducing the resistance of the water body flowing.

Meanwhile, in order to facilitate uniform diffusion of the effluent of the circulation pipe 2 into the anoxic zone, it is preferable that the circulation water outlet of the circulation pipe 2 is provided in a diffusion shape.

In this embodiment, the structure of the anoxic zone is not specifically limited, and preferably, as shown in fig. 2, the anoxic zone includes a mixing zone 3, and the circulation pipe 2 is disposed therein, so that the hydraulic circulation stirring is located in the mixing zone 3, and the effect of denitrification reaction of the water in the mixing zone 3 is low because the flow rate of the water in the hydraulic circulation stirring is high.

Preferably, the axial cross-sectional area of the mixing zone 3 is more than twice of that of the circulating pipe 2, as shown in fig. 1, the axis of the mixing zone 3 coincides with the axis of the circulating pipe 2, that is, the broken line in the circulating pipe 2 in the drawing, and the axial cross-section is the cross-section arranged on the axis, so that the effluent of the circulating pipe 2 enters the mixing zone 3 to be suddenly slowed down, and then the water body generates internal circulation hydraulic stirring at a microscopic angle in the mixing zone 3, thereby improving the contact probability of denitrifying bacteria and the water body, and fully mixing the water body and the denitrifying bacteria.

In order to ensure the effect of denitrification reaction in the anoxic zone, as shown in fig. 2, a reaction zone 6 is further arranged and is communicated with the mixing zone 3 through a channel 4, so that the water body subjected to hydraulic circulation stirring enters the reaction zone 6 through the channel 4, and the flow rate of the water body in the reaction zone 6 is reduced, so that the water body can perform sufficient denitrification reaction in the reaction zone 6, and the anoxic zone can complete sufficient denitrification reaction. Specifically, the reaction zone 6 itself is provided in plurality, and the plurality of reaction zones 6 are arranged side by side with each other in the horizontal direction.

The position of the channel 4 is not particularly limited, and the channel 4 can be arranged between the circulating water outlet and the circulating water outlet of the circulating pipe 2 in the anoxic zone, preferably, the channel 4 is positioned at one end of the anoxic zone away from the circulating water outlet of the circulating pipe 2, so that the water body entering the channel 4 is guaranteed to be subjected to hydraulic circulating stirring at least once, namely, the water body is discharged from the circulating water outlet and then falls back to the lowest position of the mixing zone 3, namely, the position corresponding to the circulating water outlet, and then, due to the impact of the water body and the mixing zone 3, part of the water body enters the reaction zone 6, and the water outlet of the circulating pipe 2 is prevented from directly entering the reaction zone 6 through the channel 4 without hydraulic circulating stirring.

The structure of the channel 4 is not particularly limited in this embodiment, and preferably, the channel 4 is bent, and the bent end extends towards the direction of the circulating water outlet of the circulating pipe 2, so that the channel 4 has a blocking effect, on one hand, beneficial sludge is blocked and remains in the mixing area 3 for participating in hydraulic circulating stirring and purifying water, on the other hand, a large amount of water can be blocked from entering the reaction area 6, the water quantity of the mixing area 3 and the hydraulic circulating stirring is ensured, and in addition, the outlet water of the opening of the channel 4 in the reaction area 6 is in a purging flow state, so that sludge accumulation in the reaction area 6 can be prevented. As shown in fig. 2, the channel 4 adopts an inverted V-shaped structure, and the top end of the channel 4 is disposed in the junction area of two adjacent reaction areas 6.

In order to further promote the mixing of denitrifying bacteria and water, and promote the effect of denitrification reaction in the reaction zone 6, preferably, a first guide plate 5 is arranged in the reaction zone 6, the first guide plate 5 extends towards the water outlet of the channel 4, as shown in fig. 2, that is, the lower end of the first guide plate 5 extends towards the central direction of the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device, by the arrangement mode, the water outlet of the channel 4 is impacted on the first guide plate 5 to change the flowing direction and the flow speed of the water, so that the mixing of denitrifying bacteria and the water is promoted by the disturbance of the water, and in addition, the first guide plate 5 discharges the water outlet of the channel 4, so that the flow speed of the water in the reaction zone 6 is reduced, and the sufficient denitrification reaction is carried out; the first guide plate 5 may be welded to the inner side of the side wall of the main body 38, or may be detachably mounted to the inner side of the side wall of the main body 38 by bolting.

As the preferred scheme, the first guide plate 5 is provided with the mesh, so that the water outlet of the channel 4 rises through the mesh, the first guide plate 5 is prevented from causing larger resistance to the water outlet of the channel 4, thereby preventing water from entering the reaction zone 6, and meanwhile, the mesh can also prevent gas and sludge from accumulating below the first guide plate 5.

The first return pipe 8 is correspondingly arranged in the reaction zone 6, a water inlet end and a water outlet end are arranged on the first return pipe 8, the water outlet end is communicated with the circulating pipe 2 or the water accelerating pipe 39, the first return pipe 8 is used for returning part of water in the reaction zone 6 to the circulating pipe 2 or the water accelerating pipe 39 to participate in hydraulic circulation stirring again, and further, the dominant denitrification strain formed in the reaction zone 6 can reach the circulating pipe 2 or the water accelerating pipe 39 through the first return pipe 8, so that the water sprayed out of the water accelerating pipe 39 can be directly mixed and diffused with the dominant denitrification strain, and the strain selection time in the anoxic zone is greatly shortened.

In this embodiment, the connection mode between the first return pipe 8 and the circulation pipe 2 or the water body accelerating pipe 39 is not specifically limited, the first return pipe 8 may be directly connected to the side wall of the circulation pipe 2 or the water body accelerating pipe 39, and when the first return pipe 8 is connected to the water body accelerating pipe 39, the preferred return water outlet end extends to the portion with reduced inner diameter of the water body accelerating pipe 39, so as to avoid that the inflow water of the water body accelerating pipe 39 enters the reaction zone 6 through the first return pipe 8, and affect the denitrification reaction in the reaction zone 6.

Further, in order to make this embodiment perform the nitrification reaction directly on the effluent after the denitrification reaction in the anoxic zone, an aerobic zone baffle is disposed in the main body 38, one side of the aerobic zone baffle forms an aerobic zone 11, and the other side forms an anoxic zone, that is, this embodiment is provided with both the aerobic zone 11 and the anoxic zone, that is, two-oxygen combination is performed, and an aeration device is disposed in the aerobic zone 11, so that the effluent in the anoxic zone enters the aerobic zone 11 to perform the nitrification reaction, and the aerobic zone 11 is provided with a second evacuation pipe 31 that is communicated with the outside of the main body 38, so as to evacuate the aerobic zone 11 during maintenance and cleaning.

In this embodiment, the communicating manner of the anoxic zone and the aerobic zone 11 is not specifically limited, preferably, the reflux water inlet end of the first reflux pipe 8 is provided with the collecting pipe 7, and the inner diameter of the collecting pipe 7 is larger than that of the first reflux pipe 8, and the collecting pipe 7 is communicated with the aerobic zone 11 through the aerobic zone water inlet pipe 9, so that the inlet of the aerobic zone water inlet pipe 9 is located above the inlet of the first reflux pipe 8, meanwhile, because the inner diameter of the collecting pipe 7 is larger than that of the first reflux pipe 8, the water in the collecting pipe 7 firstly meets the reflux requirement of the first reflux pipe 8, and then enters the aerobic zone 11 through the aerobic zone water inlet pipe 9 after meeting the reflux requirement, so as to ensure that sufficient dominant denitrification strains reflux through the first reflux pipe 8 and ensure the denitrification effect.

In order to prevent the water outlet of the water inlet pipe 9 of the aerobic zone from disturbing the water state in the aerobic zone 11, a first water distribution member 10 is further arranged at the outlet of the water inlet pipe 9 of the aerobic zone.

In this embodiment, the position of the first water distribution member 10 is not specifically limited, and preferably, the first water distribution member 10 is inclined towards the aerobic zone baffle, so that the effluent of the water inlet pipe 9 of the aerobic zone flows down along the aerobic zone baffle, and in the process that the water flows to the bottom of the aerobic zone 11, the water contacts with the rising gas generated by the aeration device to perform pre-oxygen supply, so that the speed and the effect of the subsequent nitrification reaction can be improved.

In this embodiment, the structure of the first water distribution member 10 is not specifically limited, preferably, as shown in fig. 6, the end portion of the first water distribution member 10 is provided with a tooth shape, which can cut the flocs or sludge in the water body, promote the formation of granular sludge in the aerobic zone 11, and promote the water purifying effect. Alternatively, the end of the first water distribution member 10 may have a wave-like structure.

As shown in fig. 3, the aeration device of this embodiment includes a plurality of aerators 12, the plurality of aerators 12 are communicated through a gas circuit pipeline, and the plurality of aerators 12 are arranged in a parallel multi-row structure, so that the ascending gas of each row of aerators 12 forms an air curtain in the aerobic zone 11, and further drives the water body to ascend, then the water body is lowered under the action of gravity of the water body, so that two opposite longitudinal vortices are formed between the air curtains, the mixing and reaction of the water body and nitrifying bacteria are promoted by the circulating mixing action of the longitudinal vortices, and meanwhile, the longitudinal vortices are beneficial to the suspension and hydraulic scrubbing of the particulate bodies, so that the generation of the particulate sludge is promoted, therefore, the mixed state benefit in the aerobic zone 11 is improved, the water purifying effect is further improved, and besides, because the particulate sludge in the aerobic zone 11 is not only subjected to the nitrification reaction, but also synchronous nitrification and denitrification reaction are realized, and meanwhile, the purifying effect of the particulate sludge is also improved, so that the treating load and the treating water quantity of the embodiment are improved by 2-4 times of the treating water quantity of the present embodiment.

In order to further promote the formation of longitudinal vortex in the aerobic zone 11, preferably, a second guide plate 13 is arranged in the aerobic zone 11, the second guide plate 13 can be welded with the side wall of the aerobic zone 11, and also can be detachably connected with the side wall through bolts, the second guide plate 13 is positioned in the flowing direction of the water body generated by the aerator 12, and the water body rising along with the air curtain is blocked by the second guide plate 13 to flow back, so that two opposite longitudinal vortex are formed between the air curtains in the aerobic zone 11.

In this embodiment, the structure of the second guide plate 13 is not specifically limited, in order to avoid that the second guide plate 13 causes a larger resistance to the water body flowing, preferably, the second guide plate 13 is obliquely arranged and extends in the direction of the water body flowing back or in the opposite direction, as shown in fig. 1, when the water body flows up to the position of the second guide plate 13, the water body collides with the second guide plate 13, and then can turn to flow downwards, and then is converged with the rising water body to form a stable vortex; in order to avoid accumulation of gas and sludge under the second guide plate 13, it is preferable that the second guide plate 13 is provided with openings.

In order to further enhance the water purifying effect of the embodiment, a transition zone baffle 40 is arranged in the main body 38, the transition zone baffle 40 is arranged in the aerobic zone 11, a transition zone 15 is formed on one side of the transition zone baffle 40, an aerobic zone 11 is formed on the other side of the transition zone baffle 40, as shown in fig. 1, an aerobic zone 11 is formed on the left side of the transition zone baffle 40, and an aerobic zone 11 is formed on the right side of the transition zone baffle 40, the top and the bottom of the transition zone 15 are communicated with the aerobic zone 11, a water body rising through the aerobic zone 11 enters the transition zone 15 through the top and flows out from the bottom of the transition zone 15, and as the transition zone 15 is a non-aeration zone, water body can be subjected to dynamic standing mud-water preliminary separation in the transition zone 15, and sludge is settled, compressed and gathered from the water body, so that granulation of flocculent sludge is promoted, meanwhile, granular sludge with better settling property can return to the aerobic zone 11 through the bottom of the transition zone 15 to supplement granular sludge and nitrifying bacteria in the aerobic zone 11, and the water purifying effect of the aerobic zone 11 is improved; in addition, the transition zone 15 also fully utilizes the space of the aerobic zone 11, and improves the space utilization rate of the device.

In this embodiment, the communication mode between the aerobic zone 11 and the transition zone 15 is not specifically limited, and the water body may directly flow through the partition plate 40 of the transition zone to enter the transition zone 15, so as to make the water entering the transition zone 15 uniform, as shown in fig. 1 and 7, a perforated plate 14 is disposed at the top of the partition plate 40 of the transition zone, a plurality of square through holes are uniformly disposed on the perforated plate 14, and the water body in the aerobic zone 11 passes through the square through holes to enter the transition zone 15.

In this embodiment, the structure of the transition zone 15 is not specifically limited, and may be a vertical space, preferably, as shown in fig. 1, the inner cavity of the transition zone 15 is at least partially bent to form an inclined portion, the bottom of the inclined portion is communicated with the aerobic zone 11, and the inclined portion increases the length of the transition zone 15, so as to further increase the residence time of the water body in the transition zone 15, thereby increasing the duration of dynamic standing mud-water preliminary separation of the water body, improving the mud-water separation and the granulating effect of the flocculated sludge, and meanwhile, the inclined portion also plays a role in guiding, the granular sludge with better settling property falls on the side wall of the inclined portion in the falling process, and then the guided granular sludge with better settling property moves to the communicating position of the bottom of the transition zone 15 and the aerobic zone 11, so that the granular sludge with better settling property enters the aerobic zone 11.

In this embodiment, since the transition zone 15 is provided with an inclined portion, the aerobic zone 11 has a section of inclined side wall, as shown in fig. 1, at least a part of the second guide plate 13 is disposed on the section of inclined side wall, and both the inclined side wall and the second guide plate 13 play a role in promoting the formation of longitudinal vortex.

In order to avoid that the gas in the aerobic zone 11 directly enters the transition zone 15 from the communication position between the bottom of the transition zone 15 and the aerobic zone 11, thereby disturbing the water state in the transition zone 15, preferably, a gas blocking plate 35 is arranged at the opening position of the bottom of the transition zone 15, which is communicated with the aerobic zone 11, and the gas blocking plate 35 is positioned in the aerobic zone 11, and the gas blocking plate 35 is a plate body which is welded with the side wall of the aerobic zone 11 or detachably connected through bolts and extends towards the bottom of the aerobic zone 11, and is used for forming a barrier at the opening position, so that the gas is prevented from entering the transition zone 15.

In this embodiment, the position of the choke plate 35 is not particularly limited, and preferably, as shown in fig. 1, an opening communicating with the aerobic zone 11 at the bottom of the transition zone 15 is disposed above the aerobic zone water inlet pipe 9, the choke plate 35 is disposed parallel to the aerobic zone water inlet pipe 9 so that the opening forms a distance, and the opening communicating with the aerobic zone 11 at the bottom of the transition zone 15 is disposed to have a distance to form a barrier for gas, so as to prevent the gas from entering the transition zone 15.

In order to further enhance the denitrification effect in the anoxic zone, it is preferable to provide a second return pipe 17, the inlet end of which is located in the transition zone 15, and the outlet end of which is connected to the circulation pipe 2 or the water body accelerating pipe 39, so as to return the nitrified liquid in the transition zone 15 to the circulation pipe 2 or the water body accelerating pipe 39, thereby enhancing the denitrification effect in the anoxic zone.

In this embodiment, the connection mode of the second return pipe 17 and the circulation pipe 2 or the water body accelerating pipe 39 is not specifically limited, the second return pipe 17 may be directly connected to the side wall of the circulation pipe 2 or the water body accelerating pipe 39, and when the second return pipe 17 is connected to the water body accelerating pipe 39, the outlet end of the preferred second return pipe 17 extends to the portion with reduced inner diameter of the water body accelerating pipe 39, so as to avoid that the inflow water of the water body accelerating pipe 39 enters the transition zone 15 through the second return pipe 17, and influence the water body state in the transition zone 15.

Preferably, as shown in fig. 1 and 8, a mud guard 16 is arranged above the inlet of the second return pipe 17, the mud guard 16 is bent to form a mud blocking space, the inlet of the second return pipe 17 is arranged in the mud blocking space, and granular sludge and flocculated sludge with larger volume in the transition zone 15 are prevented from entering the second return pipe 17, so that the reaction space occupied by invalid sludge in the anoxic zone is avoided, and the water treatment amount of the device is reduced.

To further enhance the water purifying effect of the present embodiment, a first sedimentation zone 19 is disposed in the main body 38, is communicated with the transition zone 15, and is located above the anoxic zone, for performing mud-water separation on the water body guided out by the transition zone 15, and improving the water purifying effect.

Preferably, the top of the first sedimentation zone 19 is provided with a flow guiding device 22, the flow guiding device 22 comprises a plurality of inclined flow guiding plates which are arranged in parallel, a flow guiding space is formed between every two adjacent flow guiding plates, the flow guiding device 22 guides the water discharged from the first sedimentation zone 19, so that the water in the first sedimentation zone 19 uniformly flows out of the first sedimentation zone 19 under the guiding effect, meanwhile, the flow guiding device 22 also plays a role in blocking the sludge in the water from being discharged out of the first sedimentation zone 19 on the one hand, and on the other hand, the water in the first sedimentation zone 19 is in a dynamic suspension state, and the density of suspended matters in the water at the inlet of the first sedimentation zone 19 is higher, so that the suspended matters in the rising water are intercepted, the contact probability of the sludge and organic matters in the water is increased, the flocculated sludge in the water is further gathered and compressed, the granulation of the flocculated sludge is promoted, so that most of the flocculated sludge and all granular sludge in the water can be blocked by the first sedimentation zone 19, and the suspended matters in the water are reduced.

In order to fully utilize the granular sludge formed in the first sedimentation zone 19 and improve the water purifying effect of the aerobic zone 11, the embodiment is further provided with a sludge reflux control plate 20, a sludge reflux channel 36 is formed between the sludge reflux control plate and the cavity wall at one side of the first sedimentation zone 19, and the sludge reflux channel 36 is communicated with the aerobic zone 11 through the openings of the transition zone 15 and the aerobic zone 11, so that the granular sludge formed below the flow guiding device 22 and the larger floccule sludge enter the aerobic zone 11 from the sludge reflux channel 36, supplement the granular sludge and nitrifying bacteria in the aerobic zone 11, and improve the water purifying effect of the aerobic zone 11.

As a preferred embodiment, as shown in fig. 1, the sludge reflux control plate 20 extends into the transition zone 15 and blocks the flow direction of the water body, on one hand, the water body in the transition zone 15 is promoted to enter the first sedimentation zone 19, and on the other hand, the disturbance of the granular sludge and larger floc sludge falling back from the sludge reflux channel 36 by the water body flow in the transition zone 15 is avoided, so that the water body enters the aerobic zone 11.

In order to avoid the phenomenon that the water inflow in the first sedimentation zone 19 is unbalanced in speed, so that the water state in the first sedimentation zone 19 is disturbed and the mud-water separation effect is affected, preferably, a second water distribution member 18 is arranged at the inlet of the first sedimentation zone 19, and the water inflow in the first sedimentation zone 19 is uniform under the water distribution effect of the second water distribution member 18.

To further enhance the water purifying effect of the present embodiment, a second sedimentation zone 37 is provided in the main body 38 and is in communication with the first sedimentation zone 19, where the inner cavity of the second sedimentation zone 37 is larger than the outlet area of the first sedimentation zone 19; the sludge hopper 27 is arranged in the second sedimentation zone 37, the sludge hopper 27 is communicated with the circulating pipe 2 or the water accelerating pipe 39, so that the effluent of the first sedimentation zone 19 further enters the second sedimentation zone 37 for mud-water separation, and the effluent of the first sedimentation zone 19 can be instantaneously slowed down because the inner cavity of the second sedimentation zone 37 is larger than the outlet area of the first sedimentation zone 19, so that the residual flocs in the water body are promoted to gather and sink, and the flocs are led out by the sludge hopper 27, so that suspended matters in the water body are further reduced, and the water purifying effect of the device is improved.

The sludge hoppers 27 are communicated with the circulating pipe 2 or the water accelerating pipe 39 to supplement strains in the anoxic zone and ensure the denitrification reaction effect in the anoxic zone, in this embodiment, the connection mode of the sludge hoppers 27 and the circulating pipe 2 or the water accelerating pipe 39 is not particularly limited, as shown in fig. 1, 2 and 4, preferably, the sludge hoppers 27 are arranged in pairs, the number of the sludge hoppers 27 is four, the bottom of each sludge hopper 27 is provided with a sludge reflux branch pipe 28, the sludge reflux branch pipes 28 of each pair of sludge hoppers 27 are communicated with one sludge collecting pipe 34, namely, one sludge collecting pipe 34 collects sludge of the two sludge hoppers 27, the sludge collecting pipe 34 is communicated with the outer space of the main body 38 through a sludge outer pipe 30 and is used for discharging the sludge in the sludge hoppers 27, the sludge reflux pipe 29 is arranged in the middle of the sludge outer pipe 30 and is communicated with the circulating pipe 2 or the water accelerating pipe 39, preferably, when the reflux pipes 29 are communicated with the water accelerating pipe 39, the outlet ends of the sludge reflux pipes 29 extend to the side walls of the circulating pipe 39 to the water accelerating pipe 39, and the sludge reflux pipes 29 are prevented from entering the second water accelerating pipe 39, and the sludge reflux pipe 39 is prevented from being disturbed by the sludge reflux pipe 29.

In order to avoid that the water outlet of the flow guiding device 22 collides with the cavity wall of the second sedimentation zone 37 to influence the water state in the second sedimentation zone 37, the preferred flow guiding plate is inclined towards the enlarged part of the second sedimentation zone 37 relative to the first sedimentation zone 19, and in order to avoid that sludge is accumulated at the flow guiding plate near the cavity wall of the second sedimentation zone 37 to form dead angles, a shielding plate 21 is arranged on the flow guiding plate.

As a preferable scheme, a baffle piece 23 is arranged on one side of the flow guiding device 22, which is close to the sludge hopper 27, and a plurality of rectangular weir crest are uniformly arranged on the top of the baffle piece 23, so that the water discharged from the first sedimentation zone 19 uniformly and stably flows and diffuses into the second sedimentation zone 37, and the disturbance of the water body in the second sedimentation zone 37 is avoided, so that the residual flocculated sludge in the water body is gathered and submerged; in addition, because the density of suspended matters in water at the water outlet of the first sedimentation zone 19 is higher, the blocking effect of the blocking piece 23 can also prevent the suspended matters from diffusing to reduce the density of the suspended matters at the water outlet of the first sedimentation zone 19, namely, the suspended matters are suspended above the flow guiding device 22, so that the blocking effect can be realized, the suspended matters in the water outlet of the first sedimentation zone 19 are blocked, the suspended matters are further gathered and grown, and then the suspended matters are subjected to the screening effect of a rectangular weir and uniformly fall into the sludge hopper 27.

In order to further enhance the water purifying effect of the present embodiment, the separation area 24 is disposed at the top of the second sedimentation area 37, and the separation area 24 includes a plurality of inclined tubes that are gathered together, so that the suspended matters rising with the water body in the second sedimentation area 37 are adsorbed on the inclined tubes after entering the inclined tubes, and fall down after further gathering, thereby further improving the water purifying effect and reducing the suspended matters in the effluent of the present embodiment.

Preferably, in order to avoid that the effluent of the diversion device 22 is directly discharged from the inclined tube along the flowing direction, the water purifying effect is reduced, and the inclined tube and the diversion plate are arranged in a non-parallel way.

In order to further enhance the water purifying effect of this embodiment, a clean water weir groove 25 is provided at the top of the separation zone 24, and the clean water weir groove 25 is connected with the water outlet portion 26, so that the clean water weir groove 25 makes the water outlet of this embodiment more uniform, and the water flow is more stable, thereby avoiding the phenomenon of short flow and turbulence from affecting the water outlet effect.

Compared with the prior art that biochemical treatment equipment is arranged horizontally, the embodiment is of a vertical structure, and can effectively reduce the occupied area of the device; because the aerobic zone 11 is provided with the granular sludge, the aerobic zone 11 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; in addition, this embodiment adopts the hydrologic cycle stirring, can promote the contact probability of microorganism and sewage, promotes the reaction effect, need not to set up auxiliary power equipment, reduces the energy consumption.

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 utility model provides a self-loopa continuous flow two oxygen composite particle sludge purification treatment device which characterized in that includes:

a main body (38) provided with a water inlet (1) and a water outlet (26);

an anoxic zone provided in the internal space of the main body (38);

a water body accelerating tube (39) which is arranged in the anoxic zone and is connected with the water inlet part (1), wherein at least one part of the inner diameter of the water body accelerating tube (39) is reduced along the flowing direction of the water body;

the circulating pipe (2) is arranged in the anoxic zone and is covered outside the water body accelerating pipe (39), two ends of the circulating pipe (2) along the water body flowing direction are respectively provided with a circulating water inlet and a circulating water outlet, and the circulating water inlet is communicated with the water inlet part (1);

The anoxic zone comprises:

a mixing zone (3) in which the circulation pipe (2) is disposed;

a reaction zone (6) in communication with the mixing zone (3) through a channel (4);

the first return pipe (8) is correspondingly arranged in the reaction zone (6), a return water inlet end and a return water outlet end are arranged on the first return pipe (8), and the return water outlet end is communicated with the circulating pipe (2) or the water body accelerating pipe (39);

the channel (4) is positioned at one end of the anoxic zone, which is far away from the circulating water outlet of the circulating pipe (2);

the channel (4) is bent, and the bent end of the channel extends towards the direction of the circulating water outlet of the circulating pipe (2);

the water body accelerating tube (39) is arranged in a conical shape along the flowing direction of the water body at least a part of the water body accelerating tube;

further comprises: an aerobic zone baffle, wherein one side of the aerobic zone baffle forms an aerobic zone (11), the other side forms an anoxic zone, and an aeration device is arranged in the aerobic zone (11);

the reflux water inlet end of the first reflux pipe (8) is provided with a collecting pipe (7), the inner diameter of the collecting pipe (7) is larger than that of the first reflux pipe (8), and the collecting pipe (7) is communicated with the aerobic zone (11) through an aerobic zone water inlet pipe (9);

Further comprises: the transition zone partition board (40) is arranged in the aerobic zone (11), a transition zone (15) is formed on one side of the transition zone partition board (40), the aerobic zone (11) is formed on the other side of the transition zone partition board, the top and the bottom of the transition zone (15) are communicated with the aerobic zone (11), and water rising through the aerobic zone (11) enters the transition zone (15) through the top and flows out from the bottom of the transition zone (15);

the inner cavity of the transition zone (15) is at least partially bent to form an inclined part, and the bottom of the inclined part is communicated with the aerobic zone (11);

further comprises: a second return pipe (17) with an inlet end positioned in the transition zone (15) and an outlet end communicated with the circulation pipe (2) or the water body accelerating pipe (39);

further comprises: a first settling zone (19) in communication with the transition zone (15) and located above the anoxic zone;

the top of the first sedimentation zone (19) is provided with a flow guiding device (22), the flow guiding device (22) comprises a plurality of inclined flow guiding plates which are arranged in parallel, and a flow guiding space is formed between every two adjacent flow guiding plates;

further comprises: a sludge reflux control plate (20) and a sludge reflux channel (36) are formed between the sludge reflux control plate and the cavity wall at one side of the first sedimentation zone (19), and the sludge reflux channel (36) is communicated with the aerobic zone (11) through the openings of the transition zone (15) and the aerobic zone (11);

The sludge reflux control plate (20) extends into the transition zone (15) and is blocked in the flow direction of the water body;

further comprises: a second sedimentation zone (37) communicating with the first sedimentation zone (19), where the second sedimentation zone (37) has an inner cavity that is larger than the outlet area of the first sedimentation zone (19);

a sludge hopper (27) is arranged in the second sedimentation zone (37), and the sludge hopper (27) is communicated with the circulating pipe (2) or the water body accelerating pipe (39);

a separation zone (24) is arranged at the top of the second sedimentation zone (37), and the separation zone (24) comprises: a plurality of angled tubes clustered together;

the top of the separation zone (24) is provided with a clean water weir groove (25), and the clean water weir groove (25) is connected with the water outlet part (26).

2. The self-circulating continuous flow two-oxygen composite granular sludge purification treatment apparatus as claimed in claim 1, wherein the circulating pipe (2) has at least a part of its inner diameter reduced along the water flow direction.

3. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 2, wherein the circulation pipe (2) is arranged in a conical shape along the water body flow direction at least a part of the circulation pipe.

4. The self-circulating continuous flow two-oxygen composite granular sludge purification treatment device of claim 1, wherein when the backflow water outlet end is communicated with the water body accelerating tube (39), the backflow water outlet end extends to a part with reduced inner diameter of the water body accelerating tube (39).

5. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device according to claim 1, characterized in that a first guide plate (5) is arranged in the reaction zone (6), and the first guide plate (5) extends towards the water outlet of the channel (4).

6. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 1, wherein a first water distribution member (10) is arranged at the outlet of the water inlet pipe (9) of the aerobic zone.

7. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 6, wherein the first water distribution member (10) is inclined towards the aerobic zone baffle.

8. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 7, wherein the end part of the first water distribution member (10) is provided with a tooth shape.

9. The self-circulating continuous flow two-oxygen composite granular sludge purification treatment apparatus of claim 1, wherein the aeration apparatus comprises:

and the aerators (12) are communicated through gas circuit pipelines, and the aerators (12) are arranged in a parallel multi-row structure.

10. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device according to claim 9, wherein a second guide plate (13) is arranged in the aerobic zone (11), and the second guide plate (13) is positioned in the flowing direction of the water body generated by the aerator (12).

11. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device according to claim 1, wherein an air blocking plate (35) is arranged at an opening part of the bottom of the transition zone (15) communicated with the aerobic zone (11), and the air blocking plate (35) is positioned in the aerobic zone (11).

12. The self-circulation continuous flow two-oxygen composite granular sludge purifying treatment device according to claim 1, wherein the outlet end of the second return pipe (17) extends to a portion where the inner diameter of the water body accelerating pipe (39) is reduced when the outlet end is communicated with the water body accelerating pipe (39).

13. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 1, wherein a mud guard (16) is arranged above the inlet of the second return pipe (17), the mud guard (16) is bent to form a mud blocking space, and the inlet of the second return pipe (17) is arranged in the mud blocking space.

14. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 1, wherein a second water distribution member (18) is arranged at the inlet of the first sedimentation zone (19).

15. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment device according to claim 1, wherein when the sludge hopper (27) is communicated with the water body accelerating tube (39), the outlet end of the sludge hopper (27) extends to a part with reduced inner diameter of the water body accelerating tube (39).

16. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 1, wherein a baffle (23) is arranged on one side of the flow guiding device (22) close to the sludge hopper (27), and a plurality of rectangular weir crest are uniformly arranged on the top of the baffle (23).

17. The self-circulating continuous flow two-oxygen composite granular sludge purification treatment device according to claim 1, wherein the inclined tube and the guide plate are arranged in a non-parallel manner.