CN113968620A

CN113968620A - Self-circulation continuous flow two-oxygen composite granular sludge purification treatment device

Info

Publication number: CN113968620A
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: 2022-01-25
Anticipated expiration: 2041-06-25
Also published as: CN113968620B

Abstract

A self-circulation continuous flow two-oxygen composite granular sludge purification treatment device belongs to the technical field of water treatment equipment. Comprises a main body, a water inlet part and a water outlet part; the anoxic zone is arranged in the inner space of the main body; the water body accelerating tube is arranged in the anoxic zone and is 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 covers the water acceleration pipe, a circulating water inlet and a circulating water outlet are respectively arranged at two ends of the circulating pipe along the flowing direction of the water body, and the circulating water inlet is communicated with the water inlet. According to the invention, the water body accelerating pipe and the circulating pipe are arranged to form hydraulic circulating stirring, so that the water body is fully mixed with the denitrifying bacteria in the anoxic zone, the contact probability of the denitrifying bacteria and the water body is improved, a good denitrifying reaction is generated, and the problem that the energy consumption is large due to the arrangement of a stirring device or the dissolved oxygen content is difficult to control due to the arrangement of an aeration device is avoided.

Description

Self-circulation continuous flow two-oxygen composite granular sludge purification 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 granular sludge purification 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 both 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, a submersible stirring device is usually adopted, but the submersible stirring device needs extra power consumption, and particularly needs more submersible stirring devices to uniformly stir the water body and meet the stirring effect, so that the submersible stirring device has higher energy consumption and is not beneficial to environmental protection; the other method is micro-gas aeration stirring, which has low power consumption, but because aeration is needed in an anoxic section, the dissolved oxygen content of the section is not well controlled, and the denitrification effect is influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the stirring mode of the anoxic section of the biochemical water treatment equipment in the prior art causes large energy consumption or is not easy to control the content of dissolved oxygen, thereby providing a self-circulation continuous flow two-oxygen composite particle sludge purification treatment device.

The invention provides the following technical scheme:

self-circulation continuous flow two oxygen composite particle sludge purification treatment device includes:

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

an anoxic zone disposed in the 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 at least partially reduces the inner diameter of the water body accelerating tube along the flowing direction of the water body;

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

Optionally, the water acceleration pipe is at least partially arranged in a conical shape along the flow direction of the water body.

Optionally, the circulation pipe has a reduced inner diameter along the direction of flow of the body of water.

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

Optionally, the anoxic zone comprises:

a mixing zone within which the circulation tube is disposed;

a reaction zone in communication with the mixing zone via a channel;

and 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 circulation pipe or the water body accelerating pipe.

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

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

Optionally, the channel is bent, and a bent end of the channel extends towards the circulation water outlet of the circulation pipe.

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

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

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

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

Optionally, an outlet of the water inlet pipe of the aerobic zone is provided with a first water distribution member.

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

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

Optionally, the aeration device comprises:

the aerator is communicated with the gas circuit pipeline, and is arranged into 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 flow direction of the water body flow generated by the aerator.

and the transition zone partition plate is arranged in the aerobic zone, a transition zone is formed on one side of the transition zone partition plate, the other side of the transition zone partition plate forms the aerobic zone, the top and the bottom of the transition zone are communicated with the aerobic zone, and water body 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 a sloped portion, the bottom of which communicates with the aerobic zone.

Optionally, an opening at the bottom of the transition zone and communicated with the aerobic zone is provided with a gas baffle plate, and the gas baffle plate is located 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 acceleration pipe, the outlet end of the second return pipe extends to the part with the reduced inner diameter of the water acceleration 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 settling zone is communicated with the transition zone and is positioned above the anoxic zone.

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

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

Optionally, the sludge recirculation 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 an inlet of the first settling zone.

the second settling zone is communicated with the first settling zone, and the inner cavity of the second settling zone is larger than the outlet area of the first settling 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 body accelerating pipe.

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

Optionally, a stopper is arranged on one side of the diversion device close to the sludge hopper, and a plurality of rectangular weir mouths are uniformly arranged at the top of the stopper.

Optionally, a separation zone is arranged at the top of the second settling zone, and the separation zone comprises: a plurality of inclined pipes gathered together.

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

Optionally, a clean water weir notch is arranged at the top of the separation area, and the clean water weir notch 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 purification treatment device, which comprises a main body, a water inlet part and a water outlet part, wherein the main body is provided with the water inlet part and the water outlet part; an anoxic zone disposed in the 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 at least partially reduces the inner diameter of the water body accelerating tube along the flowing direction of the water body; and the circulating pipe is arranged in the anoxic zone and covers the water body accelerating pipe, a circulating water inlet and a circulating water outlet are respectively arranged at two ends of the circulating pipe along the flowing direction of the water body, and the circulating water inlet is communicated with the water inlet.

The invention enables the water body containing sewage to enter the anoxic zone from the water inlet part by arranging the water body accelerating pipe, and at least one part of the inner diameter of the water body accelerating pipe is reduced, so that the instantaneous flow velocity of the water body can be increased at the position, and the flow velocity of the water body is further improved, thereby meeting the flow velocity requirement of the water body for hydraulic circulating stirring.

The circulating pipe is covered outside the water body accelerating pipe, so that the accelerated water body enters the circulating pipe and enters the anoxic zone from the circulating water outlet, because the circulating pipe is provided with the circulating water inlet, the water body sprayed into the anoxic zone from the circulating water outlet can enter the circulating pipe again through the circulating water inlet, so that the water body forms hydraulic circulating stirring in the anoxic zone, meanwhile, because at least one part of the inner diameter of the water body accelerating pipe is reduced, the flow velocity of the water body at the outlet is increased, according to Bernoulli principle, the water pressure at the outlet of the water body accelerating pipe is relatively low, the water body in the anoxic zone enters the circulating pipe again through the circulating water inlet under the pressure effect to form hydraulic circulating stirring, the combination of the scheme can realize the hydraulic circulating stirring of the water body in the anoxic zone, and compared with the mode that a stirring device or an aeration device is required to stir the water body in the anoxic zone in the prior art, according to the invention, the water body accelerating pipe and the circulating pipe are arranged to form hydraulic circulating stirring, so that the water body is fully mixed with the denitrifying bacteria in the anoxic zone, the contact probability of the denitrifying bacteria and the water body is improved, a good denitrifying reaction is generated, and the problem that the energy consumption is large due to the arrangement of a stirring device or the dissolved oxygen content is difficult to control due to the arrangement of an aeration device is avoided.

2. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, at least one part of the water body accelerating pipe is arranged in a conical shape along the flowing direction of the water body.

According to the invention, at least one part of the water body accelerating pipe is set to be conical, so that at least one part of the inner diameter of the water body accelerating pipe is reduced, further the instantaneous flow velocity of the water body at the position is increased, the flow velocity of the water body is further promoted, low pressure is generated at the outlet of the water body accelerating pipe according to the Bernoulli principle, and the conical shape has a guiding effect, so that the resistance generated by the impact of the water body at the position can be effectively reduced compared with the right-angle shape, and the loss of the power of the water body is avoided.

3. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, at least one part of the inner diameter of the circulation pipe is reduced along the flow direction of a water body.

At least one part of the inner diameter of the circulating pipe is reduced, so that the water body sprayed out of the water body accelerating pipe and the water body which enters the circulating pipe again from the anoxic zone can generate instantaneous flow velocity increase at the position, the flow velocity of the water body is further improved, the flow velocity requirement of the water body for hydraulic circulating stirring is met, meanwhile, the requirement of the water body accelerating pipe on the water body acceleration can be reduced by accelerating the water body again through the circulating pipe, the flow velocity requirement of the water body entering the water body accelerating pipe is further reduced, and the power and energy consumption required for introducing the water body into the water body accelerating pipe is reduced.

4. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, at least one part of the circulation pipe is arranged in a conical shape along the flowing direction of a water body.

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

5. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purification treatment device, wherein an anoxic zone comprises a mixing zone, and a circulation pipe is arranged in the anoxic zone; a reaction zone in communication with the mixing zone via a channel; and 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 circulation pipe or the water body accelerating pipe.

The anoxic zone is arranged into the communicated mixing zone and reaction zone, the hydraulic circulating stirring formed by the circulating pipe is positioned in the mixing zone, the water flow velocity in the mixing zone is larger due to the acceleration action of the water accelerating pipe, the retention time is short, and the denitrification reaction effect in the mixing zone is lower, so that the reaction zone with the relatively reduced water flow velocity is arranged in the anoxic zone, the water can be subjected to sufficient denitrification reaction in the reaction zone, the anoxic zone can complete the sufficient denitrification reaction, meanwhile, the first return pipe is arranged to be communicated with the circulating pipe or the water accelerating pipe, a part of water in the reaction zone returns to the circulating pipe or the water accelerating pipe through the first return pipe to participate in the hydraulic circulating stirring again, and further, the dominant denitrifying bacteria species formed in the reaction zone can reach the circulating pipe or the water accelerating pipe through the first return pipe, so that the water sprayed by the water accelerating pipe can be directly mixed and diffused with the dominant denitrifying bacteria species, greatly shortens the strain selection time in the anoxic zone.

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

The invention extends the backflow water outlet end to the part with reduced inner diameter of the water body accelerating tube, thereby preventing the water body with the water inlet part introduced into the water body accelerating tube from directly entering the backflow water outlet end, thereby influencing the reaction process of the anoxic zone and the water purification effect of the device, and in addition, preventing the water outlet of the backflow water outlet end from causing obstruction to the water body with the water inlet part introduced into the water body accelerating tube.

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

The channel is arranged at one end of the anoxic zone, which is far away from the circulating water outlet of the circulating pipe, so that the water sprayed out of the circulating pipe directly enters the reaction zone without participating in hydraulic circulating stirring, the mixing effect of denitrifying bacteria and the water is prevented from being influenced, and the effect of denitrifying reaction is further influenced.

8. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device provided by the invention is characterized in that the channel is bent, and the bent end of the channel extends towards the direction of a circulation water outlet of the circulation pipe.

The channel is bent, and the bent end extends towards the direction of the circulating water outlet of the circulating pipe, so that the channel forms a blocking effect, beneficial sludge is blocked and retained in the mixing area to participate in hydraulic circulating stirring and water purification, a large amount of water can be blocked from entering the reaction area, the water amount participating in hydraulic circulating stirring in the mixing area is ensured, in addition, the water outlet of the channel at the opening in the reaction area is in a blowing flow state, and the sludge accumulation in the reaction area can be prevented.

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

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

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

The aerobic zone is arranged, so that the water body enters the aerobic zone for nitration reaction after undergoing denitrification reaction in the anoxic zone, the water treatment effect of the device is better, and the effluent of the effluent part is purer.

11. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device provided by the invention is characterized in that a collecting pipe is arranged at the backflow water inlet end of the first backflow pipe, the inner diameter of the collecting pipe is larger than that of the first backflow pipe, and the collecting pipe is communicated with the aerobic zone through an aerobic zone water inlet pipe.

The collecting pipe is arranged at the backflow water inlet end of the first backflow pipe, the aerobic zone water inlet pipe 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 backflow pipe, and meanwhile, the inner diameter of the collecting pipe is larger than that of the first backflow pipe, so that the water body in the collecting pipe firstly meets the backflow requirement of the first backflow pipe and enters the aerobic zone through the aerobic zone water inlet pipe after the backflow requirement is met, and therefore, sufficient denitrifying bacteria can reach the circulating pipe or the water body accelerating pipe through the first backflow pipe, and the effect of denitrification reaction is ensured.

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

According to the invention, the first water distribution piece is arranged at the outlet of the water inlet pipe of the aerobic zone, so that the outlet water of the water inlet pipe of the aerobic zone firstly impacts on the first water distribution piece and enters the aerobic zone after being subjected to the water distribution effect of the first water distribution piece, the water distribution effect of the first water distribution piece can enable the inlet water of the aerobic zone to be uniform, the influence on the circulation in the aerobic zone is prevented, and the nitration reaction effect in the aerobic zone is further ensured.

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

The first water distribution piece is inclined towards the aerobic zone baffle, so that the inlet water of the aerobic zone flows down along the aerobic zone baffle, the inlet water of the aerobic zone is prevented from impacting the circulation in the aerobic zone, the nitration reaction effect in the aerobic zone is ensured, and in addition, in the process that the inlet water of the aerobic zone flows down to the bottom of the aerobic zone along the aerobic zone baffle, the inlet water is contacted with ascending gas generated by the aeration device to supply oxygen in advance, so that the speed and the effect of the subsequent nitration reaction can be improved.

14. The invention provides a self-circulation continuous flow two-oxygen composite particle sludge purification treatment device, wherein the end part of a first water distribution piece is in a tooth shape.

The end part of the first water distribution piece is arranged into a tooth shape, so that the water distribution effect is achieved, the water inlet is more uniform, flocs or sludge in the inlet water are cut, the formation of granular sludge in an aerobic area is promoted, and the water purification effect is improved.

15. The invention provides a self-circulation continuous flow two-oxygen composite granular sludge purification treatment device, which comprises: the aerator is communicated with the gas circuit pipeline, and is arranged into a parallel multi-row structure.

The aeration device comprises a plurality of aerators arranged in parallel and in a multi-row structure, so that ascending gas of each row of aerators forms an air curtain in an aerobic zone to drive a water body to ascend, then the water body descends under the action of self gravity, two opposite longitudinal vortexes are formed between the air curtains, the mixing and reaction of the water body and nitrobacteria are promoted through the circulating mixing action of the longitudinal vortexes, and meanwhile, the longitudinal vortexes are beneficial to the suspension and hydraulic wiping 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.

16. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention is characterized in that a second guide plate is arranged in the aerobic zone, and the second guide plate is positioned in the flowing direction of water body flow generated by the aerator.

The second guide plate is matched with the aerator, so that the second guide plate has a guiding effect on the air curtains formed in the aerobic zone, the water body is prevented from continuously rising along with the air curtains and flowing back under the guiding effect, two opposite longitudinal vortexes are formed between the air curtains in the aerobic zone, the mixing and reaction of the water body and nitrobacteria are promoted through the circulating mixing effect of the longitudinal vortexes, and meanwhile, the longitudinal vortexes are beneficial to the suspension and hydraulic wiping 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.

Meanwhile, the second guide plate has a blocking effect on the granular sludge in the aerobic zone, so that the granular sludge is retained in the aerobic zone to increase the concentration of the granular sludge in the aerobic zone, further 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 further the water treatment capacity of the aerobic zone is improved.

17. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device also comprises a transition zone partition plate which is arranged in the aerobic zone, a transition zone is formed on one side of the transition zone partition plate, the other side of the transition zone partition plate is provided with the aerobic zone, the top and the bottom of the transition zone are both communicated with the aerobic zone, and water body which rises through the aerobic zone enters the transition zone through the top and flows out from the bottom of the transition zone.

The transition zone is formed by arranging the transition zone partition plate in the aerobic zone, so that water rising in the aerobic zone enters the transition zone through the top, and the transition zone is a non-aeration zone, so that the water can be subjected to dynamic standing mud-water primary separation in the transition zone, and sludge is settled, compressed and gathered in the water, so that granulation of floc sludge is promoted, meanwhile, granular sludge with good settleability returns to the aerobic zone through the bottom of the transition zone to supplement granular sludge and nitrobacteria in the aerobic zone, and the water purification effect of the aerobic zone is improved; in addition, the transition area also makes full use of the space of the aerobic area, and the space utilization rate of the device is improved.

18. According to the self-circulation continuous flow two-oxygen composite particle 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 aerobic zone.

The inner cavity of the transition area is at least partially bent to form the inclined part, so that the length of the transition area is increased, the retention time of the water body in the transition area is further increased, the time length of the water body for carrying out dynamic standing mud-water primary separation is prolonged, the effects of mud-water separation and floc sludge granulation are improved, meanwhile, the inclined part also plays a role in guiding, the granular sludge with better settleability is guided to move to the communicating part between the bottom of the transition area and the aerobic area, and the granular sludge with better settleability can conveniently enter the aerobic area.

19. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, an air baffle plate is arranged at an opening at the bottom of the transition zone, which is communicated with the aerobic zone, and the air baffle plate is positioned in the aerobic zone.

The gas baffle plate is arranged at the opening communicated with the aerobic zone at the bottom of the transition zone, so that gas in the aerobic zone is prevented from entering the transition zone from the opening, and the process of dynamic standing mud-water primary separation of a water body is disturbed.

20. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention 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 is provided with the second return pipe to return the nitrifying 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 meanwhile, the nitrifying liquid in the transition zone enters the circulating pipe due to the pressure difference formed by the water, so that the energy is saved compared with the pumping mode in the prior art.

21. According to the self-circulation continuous flow two-oxygen composite particle sludge purification 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 from 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 influenced, and the water outlet of the second return pipe can be prevented from blocking the water body introduced into the water body accelerating pipe from the water inlet part.

22. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, a 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.

The invention is provided with the mudguard, and the inlet of the second return pipe is arranged in the mud blocking space formed by the mudguard, so that granular sludge and floc sludge with larger volume are prevented from entering the second return pipe, thereby avoiding the reaction space occupied by invalid sludge in an anoxic zone and reducing the water treatment amount of the device.

23. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device also comprises a first sedimentation zone, wherein the first sedimentation zone is communicated with the transition zone and is positioned above the anoxic zone.

According to the invention, the first sedimentation region is arranged to separate mud and water from the water body introduced from the transition region, so that the water purification effect is improved, and in addition, the first sedimentation region is arranged above the anoxic region, 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 purification treatment device, wherein a flow guide device is arranged at the top of a first settling zone, the flow guide device comprises a plurality of inclined flow guide plates which are arranged in parallel, and a flow guide space is formed between every two adjacent flow guide plates.

The water of guiding device in to first settling zone plays the guide effect, make the water in the first settling zone receive the first settling zone of the even outflow of direction, simultaneously guiding device still plays the hindrance effect, hinder the sludge discharge in the water on the one hand, on the other hand makes the water in the first settling zone be the dynamic suspension form, and then increase the contact probability of internal mud of water and organic matter, make the internal floc mud of water further gather together, the compression, promote the miniaturation of floc mud, thereby make first settling zone can hold back most floc mud and whole granular sludge, reduce the suspended solid in the aquatic.

25. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device also comprises a sludge backflow control plate, a sludge backflow channel is formed between the sludge backflow control plate and the wall of the first sedimentation zone, and the sludge backflow channel is communicated with the aerobic zone through the openings of the transition zone and the aerobic zone.

According to the invention, the sludge backflow control plate is arranged to form a sludge backflow channel in the first settling zone, so that granular sludge and larger floc sludge further formed below the flow guide device enter the aerobic zone from the sludge backflow channel, the granular sludge and nitrobacteria in the aerobic zone are supplemented, and the water purification 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 backflow control plate extends into the transition zone and is blocked in the flowing direction of a water body.

The sludge backflow control plate extends into the transition area to block the water flow in the transition area, so that the water in the transition area enters the first settling area, and the disturbance of the water flow in the transition area on the granular sludge and large floc sludge falling back from the sludge backflow channel is avoided to influence the granular sludge and the large floc sludge to enter the aerobic area.

27. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention is characterized in that a second water distribution piece is arranged at an inlet of the first settling zone.

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

28. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device also comprises a second settling zone, wherein the second settling zone is communicated with the first settling zone, and the inner cavity of the second settling zone is larger than the outlet area of the first settling 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 body accelerating pipe.

According to the invention, the second settling zone is arranged, and because the inner cavity of the second settling zone is larger than the outlet area of the first settling zone, the water outlet of the first settling zone is instantly slowed down, so that the residual flocs in the water body are promoted to aggregate and sink and are led out by the sludge hopper, suspended matters in the water outlet of the device are reduced, and the water purification effect of the device is improved; meanwhile, the sludge bucket is communicated with the circulating pipe or the water accelerating pipe to supplement strains in the anoxic zone, so that the denitrification reaction effect in the anoxic zone is ensured.

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

The outlet end of the sludge hopper extends to the part with the reduced inner diameter of the water body accelerating pipe, so that the water body with the water inlet part introduced into the water body accelerating pipe is prevented from directly entering the sludge hopper and the second settling zone, the water body in the second settling zone is disturbed, the water purifying effect of the device is influenced, and in addition, the water outlet and the sludge of the sludge hopper can be prevented from causing obstruction to the water body with the water inlet part introduced into the water body accelerating pipe.

30. According to the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention, a stopper is arranged on one side of the flow guide device close to the sludge hopper, and a plurality of rectangular weir ports are uniformly arranged at the top of the stopper.

According to the invention, the stopper is arranged on one side of the flow guide device close to the sludge hopper, so that the effluent of the first settling zone uniformly and stably flows and diffuses into the second settling zone, the disturbance of the water body in the second settling zone is avoided, and the residual floc sludge in the water body is convenient to gather and sink; the rectangular weir crest plays a role in screening, so that the sludge flocs further gathered and settled in the water body in the second settling zone uniformly fall into the sludge hopper under the screening effect.

31. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device provided by the invention is characterized in that the top of the second sedimentation zone is provided with a separation zone, and the separation zone comprises a plurality of inclined pipes which are gathered together.

The invention is provided with the separation area to separate floc sludge in the water body, and the floc sludge is absorbed on the inclined tube after entering the inclined tube and being blocked by the inclined tube when rising along with the water body, and falls after being further gathered, thereby further improving the water purification effect.

32. The self-circulation continuous flow two-oxygen composite particle sludge purification 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 pipe and the guide plate are arranged in a non-parallel mode, so that the water outlet of the guide device can be prevented from being directly discharged from the inclined pipe in the flow direction, and the water purification effect is reduced.

33. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device provided by the invention is characterized in that the top of the separation area is provided with a clear water weir notch, and the clear water weir notch is connected with the water outlet part.

The clear water weir notch is arranged, so that the device can discharge water more uniformly, the water flow is more stable, and the influence of short flow and turbulent flow phenomena on the water discharging effect is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;

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

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

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

fig. 8 is a schematic structural view of a fender provided in embodiment 1 of the present invention.

Description of reference numerals:

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. a first water distribution member; 11. an aerobic zone; 12. an aerator; 13. a second guide plate; 14. a perforated plate; 15. a transition zone; 16. a fender; 17. a second return pipe; 18. a second water distribution member; 19. a first settling zone; 20. a sludge reflux control panel; 21. a shutter; 22. a flow guide device; 23. a stopper; 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. sludge discharging pipes; 31. a second evacuated 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 acceleration pipe; 40. a transition zone partition.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

Example 1

The embodiment provides a self-circulation continuous flow two-oxygen composite particle sludge purification treatment device, as shown in fig. 1-8, comprising a main body 38, provided with 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 discharging the water body treated by the device; in this embodiment, the material of the main body 38 is not limited, and a steel structure, a concrete structure, a polymer material, or the like may be used.

The anoxic zone sets up the inner space of main part 38 for the water carries out denitrification, sets up discharge valve 33 at the top in anoxic zone and with the gas that discharge water striking and denitrification produced, avoids gaseous occupation anoxic zone space, reduces the processing water yield of this embodiment, and the anoxic zone still is equipped with the outer first exhaust pipe 32 of intercommunication main part 38 for in maintenance and clean messenger carry out the evacuation to the anoxic zone.

The water accelerating tube 39 is arranged in the anoxic zone, can be welded at the bottom of the main body 38, or 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 the water body so as to accelerate the water body, thereby meeting the flow speed requirement of the water body for hydraulic circulation stirring, so that no additional auxiliary power device is needed in the embodiment, the part with smaller inner diameter of the water body accelerating pipe 39 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 arranged in a conical shape for reducing the resistance of the water body flowing, the section of the water body 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 dead angles generated on the tube wall of the water body accelerating tube 39.

The circulating pipe 2 is arranged in the anoxic zone, as shown in fig. 2, 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 body 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 between the circulating water inlet and the bottom wall of the anoxic zone, so that the circulating water inlet is communicated with the water inlet part 1, the water body accelerated by the water accelerating pipe 39 enters the circulating pipe 2 and then enters the anoxic zone through the circulating water outlet, the water accelerating pipe 39 reduces at least one part of the inner diameter to increase the flow velocity of the water body at the outlet, and according to the bernoulli principle, the water pressure at the outlet of the water accelerating pipe 39 is relatively low, so that the water body in the anoxic zone can enter the circulating pipe 2 again through the gaps at the circulating water inlet part under the action of pressure and the pushing action of the water body, the water body forms hydraulic circulating stirring in the anoxic zone, the contact probability of denitrifying bacteria and the water body is improved through the hydraulic circulating stirring, the water body is fully mixed with the denitrifying bacteria in the anoxic zone, and good denitrification reaction is generated.

The present embodiment does not limit the specific structure of the circulation pipe 2, which may be a straight pipe, preferably, the circulation pipe 2 of the present embodiment is along the flow direction of the water body, at least a portion of the inner diameter of which is reduced, so as to accelerate the water body which enters the circulation pipe 2 again from the anoxic zone and the water body which is ejected from the water body acceleration pipe 39, further improve the flow velocity of the water body, ensure that the water body can be continuously stirred by hydraulic circulation, and at the same time, reduce the requirement of the water body acceleration pipe 39 on the acceleration of the water body, and further reduce the requirement of the flow velocity of the water body which enters the water body acceleration pipe 39, thereby reducing the power and energy consumption required for introducing the water body into the water body acceleration pipe 39, further, the transition portion where the inner diameter of the circulation pipe 2 is changed is tapered to reduce the resistance of the water body flow.

Meanwhile, in order to facilitate the effluent of the circulating pipe 2 to be uniformly diffused into the anoxic zone, the circulating water outlet of the circulating pipe 2 is preferably arranged in a diffusion shape.

The structure of the anoxic zone is not particularly limited in this embodiment, 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 performing denitrification reaction on 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 the axial cross-sectional area 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 imaginary line in the circulating pipe 2 in the figure, and the axial cross-section is a cross-section arranged on the axis, so that the water outlet of the circulating pipe 2 enters the mixing zone 3 and is suddenly decelerated, and further the water body generates internal circulation hydraulic stirring at a microscopic angle in the mixing zone 3, the contact probability of denitrifying bacteria and the water body is improved, and the water body and the denitrifying bacteria are fully mixed.

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 after being subjected to hydraulic circulating 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 further the anoxic zone can complete sufficient denitrification reaction. Specifically, the reaction zone 6 itself is provided in plural, and the plural reaction zones 6 are arranged side by side with each other in the horizontal direction.

The position of the channel 4 is not specifically limited in this embodiment, and the channel 4 may be disposed between the circulation water outlet and the circulation water outlet of the circulation pipe 2 in the anoxic zone, preferably, the channel 4 is located at an end of the anoxic zone away from the circulation water outlet of the circulation pipe 2, so as to ensure that the water entering the channel 4 is subjected to at least one hydraulic circulation stirring, that is, the water is discharged from the circulation water outlet, and then falls back to the lowest position of the mixing zone 3, that is, the position corresponding to the circulation water outlet, and then due to the impact between the water and the mixing zone 3, part of the water enters the reaction zone 6, so as to prevent the water exiting from the circulation pipe 2 from directly entering the reaction zone 6 through the channel 4 without being subjected to the hydraulic circulation stirring.

This embodiment does not do specific limitation to the structure of passageway 4, it is preferred, passageway 4 is buckled and is set up, its bending end extends towards the circulation delivery port direction of circulating pipe 2, make passageway 4 have the effect of blockking, block on the one hand that beneficial mud stays in mixing area 3, be used for participating in hydraulic circulation stirring purification water, on the other hand can block in the water gets into reaction zone 6 in a large number, guarantee the water yield of participating in hydraulic circulation stirring in mixing area 3, in addition, make the play water of passageway 4 opening part in reaction zone 6 be and sweep the flow state, can prevent to produce mud in reaction zone 6 and pile up. As shown in FIG. 2, the channel 4 itself adopts an inverted V-shaped structure, and the top end of the channel 4 is arranged at the boundary area of two adjacent reaction zones 6.

In order to further promote the mixing of the denitrifying bacteria and the water body and improve the effect of the denitrifying 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 center direction of the self-circulation continuous flow two-oxygen composite particle sludge purification treatment device, through the arrangement mode, the outlet water of the channel 4 impacts on the first guide plate 5 to change the flowing direction and the flowing speed of the water body, so that the mixing of the denitrifying bacteria and the water body is promoted through the disturbance of the water body, and in addition, the first guide plate 5 can discharge the outlet water of the channel 4, so that the flowing speed of the water body in the reaction zone 6 is reduced, and the sufficient denitrifying 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 bolts.

As the preferred scheme, first baffle 5 has seted up the mesh, makes the play water of passageway 4 pass the mesh and rises, avoids first baffle 5 to cause great resistance to the play water of passageway 4 to hinder the water to get into reaction zone 6, the mesh can also avoid first baffle 5 below to pile up gas and mud simultaneously.

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, the return 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 a 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 then dominant denitrifying bacteria 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 obtained, namely, raw water can be directly mixed and diffused with the dominant denitrifying bacteria, and the bacteria selection time in the anoxic zone is greatly shortened.

In this embodiment, the connection manner between the first return pipe 8 and the circulation pipe 2 or the water acceleration 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 acceleration pipe 39, and when the first return pipe 8 is connected to the water acceleration pipe 39, the preferable return water outlet end extends to the part of the water acceleration pipe 39 with the reduced inner diameter, so as to prevent the water entering the water acceleration pipe 39 from entering the reaction zone 6 through the first return pipe 8 and affecting the denitrification reaction in the reaction zone 6.

Furthermore, in order to enable the embodiment to directly perform the nitrification treatment on the effluent after the denitrification reaction is performed on the anoxic zone, an aerobic zone baffle is arranged in the main body 38, an aerobic zone 11 is formed on one side of the aerobic zone baffle, and an anoxic zone is formed on the other side of the aerobic zone baffle, i.e., the embodiment is provided with the aerobic zone 11 and the anoxic zone simultaneously, i.e., the two oxygens are combined, an aeration device is arranged in the aerobic zone 11, so that the effluent of the anoxic zone enters the aerobic zone 11 for the nitrification reaction, and the aerobic zone 11 is provided with a second emptying pipe 31 communicated with the outside of the main body 38 for emptying the aerobic zone 11 during maintenance and cleaning.

This embodiment does not specifically prescribe a limit to the connected mode of anoxic zone and aerobic zone 11, it is preferred, the end of intaking at the backward flow of first return pipe 8 is equipped with collecting pipe 7, and the collecting pipe 7 internal diameter is greater than the internal diameter of first return pipe 8, collecting pipe 7 is through aerobic zone inlet tube 9 and aerobic zone 11 intercommunication, consequently, the entry of aerobic zone inlet tube 9 is located the entry top of first return pipe 8, simultaneously because the collecting pipe 7 internal diameter is greater than the internal diameter of first return pipe 8, consequently, the water in the collecting pipe 7 at first satisfies the backward flow demand of first return pipe 8, just get into aerobic zone 11 via aerobic zone inlet tube 9 after satisfying the backward flow demand, in order to guarantee sufficient advantage denitrifying bacteria kind and flow back through first return pipe 8, guarantee denitrification reaction's effect.

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

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

The structure of the first water distribution member 10 is not particularly limited in this embodiment, and preferably, as shown in fig. 6, the end of the first water distribution member 10 is provided with a tooth shape, which can cut flocs or sludge in the water body, promote the formation of granular sludge in the aerobic zone 11, improve the water purification effect, and compared with the prior art, granular sludge can be formed by intermittent aeration, and this embodiment does not need to provide a regulating tank and a buffer water tank. As a modification, the end of the first water distributing member 10 may have another structure such as a wave shape.

As shown in fig. 3, the aeration apparatus of this embodiment includes a plurality of aerators 12, the aerators 12 are connected by a gas pipeline, and the aerators 12 are arranged in parallel multiple rows, 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, and then the water body descends under the action of its own gravity, so that two opposite longitudinal vortexes are formed between the air curtains, and the mixing and reaction of the water body and nitrifying bacteria are promoted by the circulating mixing action of the longitudinal vortexes, and meanwhile, the longitudinal vortexes are beneficial to the suspension and hydraulic wiping of the granules, so as to promote the generation of the granular sludge, thereby improving the mixed state benefit in the aerobic zone 11, and further improving the water purification effect, and in addition, because the granular sludge is provided in the aerobic zone 11, not only the nitrification reaction is performed in the aerobic zone 11, but also the synchronous nitrification and denitrification reaction can be realized, meanwhile, the granular sludge has a purifying effect, so that the purifying effect of the embodiment can be improved, the treatment load and the treatment water quantity of the embodiment are improved, and the treatment water quantity of the embodiment is 2-4 times that of the prior art.

In order to further promote the formation of the longitudinal vortex in the aerobic zone 11, it is preferable that a second guide plate 13 is disposed in the aerobic zone 11, the second guide plate 13 may be welded to the side wall of the aerobic zone 11, or may be detachably connected to the side wall by a bolt, the second guide plate 13 is located in the flow direction of the water flow generated by the aerator 12, and the water rising along with the air curtain is hindered by the second guide plate 13 to flow back, so as to promote the formation of two opposite longitudinal vortices between the air curtains in the aerobic zone 11.

In this embodiment, the structure of the second guide plate 13 is not specifically limited, and in order to avoid that the second guide plate 13 causes a large resistance to the flow of the water body, preferably, the second guide plate 13 is arranged obliquely and extends along the direction of the backflow of the water body or in the opposite direction, as shown in fig. 1, after the water body flows upwards to the position of the second guide plate 13, the water body collides with the second guide plate 13, and then can be turned to flow downwards, and then is converged with the rising water body to form a stable vortex; in order to avoid the accumulation of gas and sludge under the second guide plate 13, the second guide plate 13 is preferably provided with openings.

In order to further enhance the water purification effect of the embodiment, a transition zone partition plate 40 is arranged in the main body 38, the transition zone partition plate 40 is arranged in the aerobic zone 11, a transition zone 15 is formed on one side of the transition zone partition plate 40, and an aerobic zone 11 is formed on the other side of the transition zone partition plate 40, as shown in fig. 1, the aerobic zone 11 is formed on the left side of the transition zone partition plate 40, the aerobic zone 11 is formed on the right side of the transition zone partition plate 40, the top and the bottom of the transition zone 15 are both communicated with the aerobic zone 11, 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, because the transition zone 15 is a non-aeration zone, the water can perform dynamic standing primary mud-water separation in the transition zone 15, sludge is settled, compressed and gathered from the water, granulation of floc sludge is promoted, and meanwhile, granular sludge with good settleability can return to the aerobic zone 11 through the bottom of the transition zone 15, so as to supplement granular sludge and nitrobacteria in the aerobic zone 11 and improve the water purification effect of the aerobic zone 11; in addition, the transition zone 15 also makes full use of the space of the aerobic zone 11, and the space utilization rate of the device is improved.

In this embodiment, no specific limitation is imposed on the communication manner between the aerobic zone 11 and the transition zone 15, the water may directly flow over the partition plate 40 of the transition zone and enter the transition zone 15, and in order to make the water entering the transition zone 15 uniform, as shown in fig. 1 and 7, a perforated plate 14 is disposed on the top of the partition plate 40 of the transition zone, the perforated plate 14 is uniformly provided with a plurality of square through holes, and the water in the aerobic zone 11 passes through the square through holes and enters the transition zone 15.

The structure of the transition area 15 is not specifically limited in this embodiment, and it may be a vertical space, preferably, as shown in fig. 1, the inner cavity of the transition area 15 is at least partially bent to form an inclined portion, the bottom of the inclined portion is communicated with the aerobic area 11, and the inclined portion increases the length of the transition area 15, so as to increase the retention time of the water body in the transition area 15, thereby increasing the time length of the water body for dynamic standing mud-water primary separation, improving the effect of mud-water separation and floc sludge granulation, and meanwhile, the inclined portion also plays a role in guiding, and the granular sludge with better settleability falls on the side wall of the inclined portion in the falling process, and then is guided to move to the communication position between the bottom of the transition area 15 and the aerobic area 11, so that the granular sludge with better settleability enters the aerobic area 11.

In this embodiment, the transition zone 15 is provided with an inclined portion, so that the aerobic zone 11 has a section of obliquely arranged side wall, as shown in fig. 1, on which at least a part of the second guiding plate 13 is arranged, both the inclined side wall and the second guiding plate 13 contributing to the formation of the longitudinal vortex.

In order to prevent the gas in the aerobic zone 11 from directly entering the transition zone 15 from the communication part between the bottom of the transition zone 15 and the aerobic zone 11, thereby disturbing the state of the water in the transition zone 15, it is preferable that a gas baffle 35 is provided at the opening of the bottom of the transition zone 15 communicating with the aerobic zone 11, and the gas baffle 35 is located in the aerobic zone 11, and the gas baffle 35 is a plate body welded or detachably connected to the side wall of the aerobic zone 11 by bolts, and extends toward the bottom of the aerobic zone 11, so as to form a block at the opening and prevent the gas from entering the transition zone 15.

The position of the baffle plate 35 is not limited in this embodiment, and it is preferable that, as shown in fig. 1, the 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 baffle plate 35 is disposed in parallel with the aerobic zone water inlet pipe 9 so that the opening is formed at a distance, and the opening communicating with the aerobic zone 11 at the bottom of the transition zone 15 is formed at a distance to block the gas and prevent the gas from entering the transition zone 15.

In order to further improve the denitrification reaction effect in the anoxic zone, it is preferable to provide the second return pipe 17, an inlet end of which is located in the transition zone 15, and an outlet end of which is communicated with the circulating pipe 2 or the water accelerating pipe 39, so as to return the nitrified liquid in the transition zone 15 to the circulating pipe 2 or the water accelerating pipe 39, thereby improving the denitrification reaction effect in the anoxic zone.

In this embodiment, the connection manner between the second return pipe 17 and the circulation pipe 2 or the water acceleration 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 acceleration pipe 39, and when the second return pipe 17 is connected to the water acceleration pipe 39, the outlet end of the second return pipe 17 preferably extends to the part where the inner diameter of the water acceleration pipe 39 is reduced, so as to prevent the water entering the water acceleration pipe 39 from entering the transition area 15 through the second return pipe 17 and affecting the water state in the transition area 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, and the inlet of the second return pipe 17 is arranged in the mud blocking space to prevent granular sludge and floc sludge with large volume in the transition zone 15 from entering the second return pipe 17, so that the reaction space occupied by ineffective sludge in the anoxic zone is avoided, and the treatment water amount of the device is reduced.

In order to further enhance the water purification effect of the present embodiment, a first settling zone 19 is disposed in the main body 38, is communicated with the transition zone 15, and is located above the anoxic zone, and is used for performing mud-water separation on the water body guided out from the transition zone 15, so as to enhance the water purification effect.

Preferably, a diversion device 22 is arranged at the top of the first settling zone 19, the diversion device 22 comprises a plurality of diversion plates which are inclined and arranged in parallel, a diversion space is formed between every two adjacent diversion plates, the diversion device 22 plays a guiding role in guiding the effluent of the first settling zone 19 to enable the water in the first settling zone 19 to uniformly flow out of the first settling zone 19 in a guiding way, meanwhile, the diversion device 22 also plays a blocking role in blocking the sludge in the water from discharging out of the first settling zone 19 on the one hand, on the other hand, the water in the first settling zone 19 is in a dynamic suspension shape, the density of suspended matters in the water at the inlet of the first settling zone 19 is higher, so that the suspended matters in the rising water are blocked, the contact probability of the sludge and organic matters in the water is increased, the floc sludge in the water is further gathered and compressed, granulation of the floc sludge is promoted, and most of the granular sludge and all the granular sludge can be intercepted by the first settling zone 19, reduce suspended matters in the effluent.

For make full use of the granular sludge formed in the first settling zone 19, and promote the water purification effect of the aerobic zone 11, the present embodiment further provides the sludge backflow control panel 20, and the sludge backflow channel 36 is formed between the wall of the first settling zone 19 and the wall of the aerobic zone 11, the sludge backflow 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 diversion device 22 and the larger floc sludge enter the aerobic zone 11 from the sludge backflow channel 36, the granular sludge and the nitrobacteria in the aerobic zone 11 are supplemented, and the water purification effect of the aerobic zone 11 is promoted.

As a preferred embodiment, as shown in fig. 1, the sludge return 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 forced into the first settling zone 19, and on the other hand, the flow of the water body in the transition zone 15 is prevented from disturbing the granular sludge and the larger floc sludge falling back from the sludge return channel 36 and affecting the entering of the aerobic zone 11.

In order to avoid the phenomenon that the water inlet speed of the first settling area 19 is unbalanced, and the water state in the first settling area 19 is disturbed, thereby affecting the mud-water separation effect, it is preferable that a second water distribution member 18 is arranged at the inlet of the first settling area 19, and the water inlet of the first settling area 19 is uniform through the water distribution function of the second water distribution member 18.

In order to further enhance the water purification effect of the present embodiment, a second settling zone 37 is disposed in the main body 38 and is communicated with the first settling zone 19, and at the communication position, the inner cavity of the second settling zone 37 is larger than the outlet area of the first settling zone 19; be equipped with sludge bucket 27 in the second settling zone 37, sludge bucket 27 and circulating pipe 2 or water accelerating tube 39 intercommunication, make the play water of first settling zone 19 further get into second settling zone 37 and carry out mud-water separation, because second settling zone 37 inner chamber is greater than the exit area of first settling zone 19, consequently the play water of first settling zone 19 can slow down in the twinkling of an eye, thereby promote remaining floc gathering in the water and sink, and derive by sludge bucket 27, further reduce the suspended solid in the water, promote the water purification effect of this device.

The sludge hoppers 27 are communicated with the circulating pipe 2 or the water body accelerating pipe 39 to supplement strains in the anoxic zone and ensure the denitrification effect in the anoxic zone, the connection mode of the sludge hoppers 27 and the circulating pipe 2 or the water body accelerating pipe 39 is not particularly limited in the embodiment, as shown in fig. 1, 2 and 4, preferably, the sludge hoppers 27 are arranged in pairs, the number of the sludge hoppers 27 in the embodiment is four, the sludge return branch pipes 28 are arranged at the bottoms of the sludge hoppers 27, the sludge return branch pipes 28 of each pair of the sludge hoppers 27 are communicated with one sludge collecting pipe 34, namely, one sludge collecting pipe 34 collects sludge of two sludge hoppers 27, the sludge collecting pipe 34 is communicated with the external space of the main body 38 through the sludge external discharge pipe 30 and is used for discharging the sludge in the sludge hoppers 27, the sludge return pipe 29 is arranged in the middle of the sludge external discharge pipe 30, and the sludge return pipe 29 is communicated with the circulating pipe 2 or the water body accelerating pipe 39, the sludge return pipe 29 can be directly communicated with the side wall of the circulating pipe 2 or the water body accelerating pipe 39, preferably, when the sludge return pipe 29 is communicated with the water body accelerating pipe 39, the outlet end of the sludge return pipe 29 extends to the part with the reduced inner diameter of the water body accelerating pipe 39, so that the water entering the water body accelerating pipe 39 is prevented from directly entering the sludge hopper 27 through the sludge return pipe 29, and the water body state in the second settling zone 37 is prevented from being disturbed.

In order to avoid the impact of the effluent of the diversion device 22 with the wall of the second settling zone 37 and the influence of the water state in the second settling zone 37, the preferred deflector is inclined towards the enlarged part of the second settling zone 37 relative to the first settling zone 19, and in order to avoid the formation of dead corners near the wall of the second settling zone 37 and the accumulation of sludge, the deflector is provided with a shielding plate 21.

As a preferable scheme, a blocking piece 23 is arranged on one side of the diversion device 22 close to the sludge hopper 27, a plurality of rectangular weir holes are uniformly formed in the top of the blocking piece 23, the blocking piece 23 enables the water outlet of the first settling zone 19 to uniformly and stably flow and diffuse into the second settling zone 37, and the disturbance of the water body in the second settling zone 37 is avoided, so that the residual floc sludge in the water body is gathered and sunk; in addition because the density of the aquatic suspended solid of the play water department of first settling zone 19 is great, consequently keep off the effect of blocking of 23 and can also avoid the suspended solid diffusion, reduce the suspended solid density of this department, and the suspended solid suspension is in the play water department of first settling zone 19, guiding device 22 top promptly, can play the interception effect, intercept the suspended solid of first settling zone 19 play water, make the suspended solid further gather and increase, then receive the screening effect of rectangle weir mouth, even fall into in sludge bucket 27.

For the water purification effect of further reinforcing this embodiment, set up separation region 24 at second settling zone 37 top, separation region 24 includes a plurality of pipe chute that gather together, makes the suspended solid that rises along with the water body in second settling zone 37 after getting into the pipe chute, receives the hindrance of pipe chute and adsorbs on the pipe chute, falls after further gathering, consequently can further promote water purification effect, reduces the suspended solid that this embodiment goes out aquatic.

Preferably, in order to prevent the effluent of the diversion device 22 from being directly discharged from the inclined pipe in the flow direction and reduce the water purification effect, the inclined pipe and the diversion plate are arranged in a non-parallel manner.

In order to further enhance the water purification effect of the present embodiment, the clear water weir notch 25 is disposed at the top of the separation area 24, the clear water weir notch 25 is connected to the water outlet portion 26, and the clear water weir notch 25 makes the water outlet of the present embodiment more uniform, the water flow more stable, and the influence of short flow and turbulence on the water outlet effect is avoided.

The embodiment is of a vertical structure, and compared with the biochemical treatment equipment in the prior art which is arranged in a horizontal mode, the device can effectively reduce the floor area; 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 floc sludge in the prior art, and the water treatment capacity of the embodiment is higher; in addition, this embodiment adopts water conservancy circulation stirring, can promote the contact probability of microorganism and sewage, promotes the reaction effect to need not to set up auxiliary power equipment, reduce the energy consumption.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. Self-circulation continuous flow two oxygen composite particle sludge purification treatment device, its characterized in that includes:

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

an anoxic zone disposed in the interior space of the body (38);

the water body accelerating tube (39) is arranged in the anoxic zone, is connected with the water inlet part (1), and 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 covers the water accelerating pipe (39), a circulating water inlet and a circulating water outlet are respectively arranged at two ends of the circulating pipe (2) along the flowing direction of the water body, and the circulating water inlet is communicated with the water inlet part (1).

2. The apparatus according to claim 1, wherein the water acceleration pipe (39) is tapered at least in part along the direction of flow of the water.

3. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment apparatus according to claim 1, wherein the circulation pipe (2) has at least a portion of its inner diameter reduced along the flow direction of the water body.

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

5. The self-circulating continuous flow two-oxygen composite granular sludge purification treatment plant according to claim 1, characterized in that said anoxic zone comprises:

a mixing zone (3) inside which said circulation duct (2) is arranged;

a reaction zone (6) communicating with said 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 circulation pipe (2) or the water body accelerating pipe (39).

6. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 5, wherein when the return water outlet end is communicated with the water acceleration pipe (39), the return water outlet end extends to the part of the water acceleration pipe (39) with the reduced inner diameter.

7. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to the claim 5, wherein the channel (4) is located at the end of the anoxic zone far from the circulation water outlet of the circulation pipe (2).

8. The apparatus according to claim 7, wherein the channel (4) is bent and the bent end extends toward the circulation outlet of the circulation pipe (2).

9. The apparatus according to claim 8, wherein a first guide plate (5) is provided in the reaction zone (6), and the first guide plate (5) extends towards the outlet of the channel (4).

10. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment apparatus according to any one of claims 5 to 9, further comprising:

the aerobic zone baffle plate is characterized in that an aerobic zone (11) is formed on one side of the aerobic zone baffle plate, the anoxic zone is formed on the other side of the aerobic zone baffle plate, and an aeration device is arranged in the aerobic zone (11).

11. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 10, wherein the return water inlet end of the first return pipe (8) is provided with a collecting pipe (7), the inner diameter of the collecting pipe (7) is larger than that of the first return pipe (8), and the collecting pipe (7) is communicated with the aerobic zone (11) through an aerobic zone water inlet pipe (9).

12. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 11, wherein the outlet of the water inlet pipe (9) of the aerobic zone is provided with a first water distribution member (10).

13. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment plant according to claim 12, wherein the first water distribution member (10) is inclined towards the aerobic zone baffle.

14. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to claim 13, wherein the end of the first water distribution member (10) is provided with a tooth shape.

15. The self-circulating continuous flow dioxygen-composite granular sludge purification treatment apparatus according to claim 10, wherein said aeration apparatus comprises:

the aerator (12), a plurality of the aerator (12) is through the gas circuit pipeline intercommunication, and a plurality of the aerator (12) sets up to parallel multirow structure.

16. The apparatus according to claim 15, wherein a second guide plate (13) is provided in the aerobic zone (11), and the second guide plate (13) is located in the flow direction of the water flow generated by the aerator (12).

17. The apparatus of claim 10, further comprising:

transition district baffle (40), set up in aerobic zone (11), be located one side of transition district baffle (40) forms transition district (15), and the opposite side forms aerobic zone (11), the top and the bottom of transition district (15) all with aerobic zone (11) intercommunication, through the water that aerobic zone (11) rose gets into through the top transition district (15) and follow the bottom of transition district (15) is flowed.

18. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment plant according to claim 17, wherein the inner cavity of the transition zone (15) is at least partially bent to form an inclined section, the bottom of which communicates with the aerobic zone (11).

19. The apparatus according to claim 17 or 18, wherein an air baffle plate (35) is disposed at the opening of the bottom of the transition zone (15) communicated with the aerobic zone (11), and the air baffle plate (35) is located in the aerobic zone (11).

20. The apparatus of claim 17, further comprising:

a second return pipe (17) having an inlet end located in the transition zone (15) and an outlet end communicating with the circulation pipe (2) or the water acceleration pipe (39).

21. The apparatus according to claim 20, wherein the outlet end of the second return pipe (17) is extended to a portion where the inner diameter of the water acceleration pipe (39) is reduced when the outlet end is communicated with the water acceleration pipe (39).

22. The apparatus according to claim 20, wherein a mud guard (16) is disposed above the inlet of the second return pipe (17), the mud guard (16) is bent to form a mud guard space, and the inlet of the second return pipe (17) is disposed in the mud guard space.

23. The apparatus of claim 17, further comprising:

a first settling zone (19) in communication with the transition zone (15) and located above the anoxic zone.

24. The apparatus according to claim 23, wherein a flow guide device (22) is disposed at the top of the first settling zone (19), and the flow guide device (22) comprises a plurality of inclined and parallel flow guide plates, and a flow guide space is formed between adjacent flow guide plates.

25. The apparatus of claim 24, further comprising:

and a sludge backflow channel (36) is formed between the sludge backflow control plate (20) and the wall of the first settling zone (19) on one side, and the sludge backflow channel (36) is communicated with the aerobic zone (11) through the openings of the transition zone (15) and the aerobic zone (11).

26. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment plant according to claim 25, wherein the sludge recirculation control plate (20) extends into the transition zone (15) and is blocked in the flow direction of the body of water.

27. The self-circulation continuous flow two oxygen composite particle sludge purification treatment plant according to any of the claims 23 to 26, wherein a second water distribution member (18) is provided at the inlet of the first settling zone (19).

28. The apparatus of claim 24, further comprising:

a second settling zone (37) in communication with the first settling zone (19) where the second settling zone (37) has an internal cavity larger than the outlet area of the first settling zone (19);

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

29. The self-circulation continuous flow two-oxygen composite granular sludge purification treatment device according to claim 28, wherein when the sludge hopper (27) is communicated with the water body acceleration pipe (39), the outlet end of the sludge hopper (27) extends to the part of the water body acceleration pipe (39) with the reduced inner diameter.

30. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device according to the claim 28, wherein the side of the diversion device (22) close to the sludge hopper (27) is provided with a baffle (23), and the top of the baffle (23) is uniformly provided with a plurality of rectangular weir mouths.

31. The self-circulating continuous flow two-oxygen composite particle sludge purification treatment plant according to claim 28, wherein a separation zone (24) is provided at the top of said second settling zone (37), said separation zone (24) comprising: a plurality of inclined pipes gathered together.

32. The apparatus of claim 31, wherein the inclined tubes and the baffles are disposed in a non-parallel manner.

33. The self-circulation continuous flow two-oxygen composite particle sludge purification treatment device as claimed in claim 31, wherein the separation zone (24) is provided with a clear water weir notch (25) at the top, and the clear water weir notch (25) is connected with the water outlet part (26).