CN216038844U

CN216038844U - Central continuous flow two-oxygen composite granular sludge purification treatment device

Info

Publication number: CN216038844U
Application number: CN202121436554.8U
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: 2022-03-15
Anticipated expiration: 2031-06-25

Abstract

A central 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 aerobic zone is arranged in the inner space of the main body and is communicated with the water inlet part, and an aeration device is arranged in the aerobic zone; the filtering and settling zone is arranged in the inner space of the main body, is communicated with the aerobic zone and is positioned at the downstream position of the aerobic zone; and the sludge hopper is arranged in the filtering and settling zone and is provided with a sludge discharge pipeline extending out of the main body. The utility model sets an aerobic zone in the main body to carry out aerobic reaction on the water body introduced from the water inlet part, the water body after the aerobic reaction enters the filtering and settling zone to carry out precipitation separation treatment, and sets a sludge hopper in the filtering and settling zone to collect the residual sludge in the water body and discharge the residual sludge from the sludge discharge pipeline, thereby reducing the content of the residual sludge in the filtering and settling zone, and avoiding the situation that the water body in the filtering and settling zone is more and more turbid, causing the residual sludge to flow out along with the effluent of the equipment and being incapable of meeting the requirements of water treatment standards.

Description

Central continuous flow two-oxygen composite granular sludge purification treatment device

Technical Field

The utility model relates to the technical field of water treatment equipment, in particular to a central 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), in both processes, sewage needs to be subjected to denitrification reaction in an anoxic section, then enters an aerobic section for nitrification reaction, and finally is precipitated in a precipitation zone and then is discharged.

In order to discharge sludge generated in equipment and avoid occupying equipment space and causing the reduction of equipment water treatment capacity in the prior art, sludge is discharged by arranging a sludge discharge pipeline on an aerobic section, sludge generated in a settling zone due to settling separation is discharged by arranging an opening on a partition plate of the settling zone and the aerobic zone, so that the sludge generated in the settling zone falls back to the aerobic zone and is discharged through the sludge discharge pipeline, but the way can only discharge larger sludge which falls to the bottom of the aerobic section by overcoming the buoyancy of a water body by the self gravity, and residual sludge which contains smaller sludge and suspended matters and cannot overcome the buoyancy of the water body by the self gravity cannot be effectively discharged by the prior art, which can cause the more and more contents of the residual sludge in the water body along with the use of the equipment, so that the water body in the settling zone is more and more turbid, and further causes the outflow of the residual sludge along with the effluent of the equipment, can not meet the requirements of water treatment standards.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem of overcoming the defect that in the prior art, the biochemical water treatment equipment cannot effectively discharge excess sludge by adopting a mode of arranging a sludge discharge pipeline at an aerobic section to discharge sludge, so that the excess sludge flows out along with the effluent of the equipment, thereby providing a central continuous flow two-oxygen composite granular sludge purification treatment device.

The utility model provides the following technical scheme:

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

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

the aerobic zone is arranged in the inner space of the main body and is communicated with the water inlet part, and an aeration device is arranged in the aerobic zone;

the filtering and settling zone is arranged in the inner space of the main body, is communicated with the aerobic zone and is positioned at the downstream position of the aerobic zone;

and the sludge hopper is arranged in the filtering sedimentation zone and is provided with a sludge discharge pipeline.

Optionally, the sludge hopper is arranged at an inlet of the filtering and settling zone communicated with the aerobic zone.

Optionally, a plurality of sludge hoppers are arranged, a water flow channel is formed between every two adjacent sludge hoppers, and water enters the filtering and settling zone through the water flow channel.

Optionally, the method further comprises:

the first separating cylinder is arranged in the main body, the filtering and settling area is formed between the first separating cylinder and the main body, an inlet of the filtering and settling area is formed between the lower end part of the first separating cylinder and the main body, and the sludge hopper is connected with the first separating cylinder.

Optionally, the method further comprises:

the sludge backflow control cylinder is arranged in the main body, a sludge backflow channel is formed between the sludge backflow control cylinder and the main body, the sludge backflow control cylinder extends into the filtering and settling area, an inlet of the filtering and settling area is formed between the sludge backflow control cylinder and the lower end of the first separating cylinder, and the sludge hopper is connected with the sludge backflow control cylinder.

Optionally, the first partition barrel is at least partially bent towards the sludge hopper.

Optionally, a three-phase separation plate is arranged at an inlet of the filtering and settling zone, a first exhaust pipe extending out of the filtering and settling zone is arranged on the three-phase separation plate, and the sludge hopper is arranged on the three-phase separation plate.

Optionally, the method further comprises:

the first separating cylinder is arranged in the main body, and the filtering sedimentation area is formed between the first separating cylinder and the main body;

the three-phase separation plate is disposed on the main body and extends toward the first partition cylinder.

Optionally, the filtration and settling zone comprises:

the first settling zone is communicated with the aerobic zone and is provided with the sludge hopper;

and the separation device is communicated with the first settling zone and is positioned above the first settling zone.

Optionally, the method further comprises:

the second separating cylinder is arranged in the main body, a transition area is formed between the second separating cylinder and the first separating cylinder, the aerobic area is formed on one side of the second separating cylinder, which is different from the transition area, and the water body ascending in the aerobic area enters the transition area through the top of the second separating cylinder and flows out of the bottom of the transition area to the filtering and settling area.

Optionally, the bottom of the transition zone is provided with an opening adapted for sludge to flow back to the aerobic zone.

Optionally, the method further comprises:

the anoxic zone tank body is arranged in the main body, an anoxic zone is formed inside the anoxic zone tank body, and the aerobic zone is formed between the anoxic zone tank body and the second separating cylinder;

the water inlet part is communicated with the anoxic zone, and the anoxic zone is positioned at the upstream of the aerobic zone.

Optionally, the anoxic zone tank body is provided with an aerobic zone water inlet pipe communicated with the aerobic zone, and a water distribution piece is arranged at an outlet of the aerobic zone water inlet pipe.

Optionally, the water distribution piece is a bent piece, an outlet of the aerobic zone water inlet pipe is arranged at one end of the water distribution piece connected with the main body, and a water distribution port is arranged between the other end of the water distribution piece and the main body.

Optionally, the method further comprises:

and 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 technical scheme of the utility model has the following advantages:

1. the utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, which comprises a main body, a water inlet part, a water outlet part and a water outlet part, wherein the main body is provided with a water inlet part and a water outlet part; the aerobic zone is arranged in the inner space of the main body and is communicated with the water inlet part, and an aeration device is arranged in the aerobic zone; the filtering and settling zone is arranged in the inner space of the main body, is communicated with the aerobic zone and is positioned at the downstream position of the aerobic zone; and the sludge hopper is arranged in the filtering sedimentation zone and is provided with a sludge discharge pipeline.

The utility model is characterized in that an aerobic zone is arranged in the main body to carry out aerobic reaction on the water body containing sewage introduced from the water inlet part, an aeration device is arranged in the aerobic zone and is used for introducing gas into the aerobic zone so as to enable the water body to carry out aerobic reaction in the aerobic zone, the water body after the aerobic reaction enters a filtering and settling zone to carry out precipitation separation treatment, and a sludge hopper is arranged in the filtering and settling zone to collect residual sludge in the water body in the filtering and settling zone and discharge the residual sludge from a sludge discharge pipeline, so that the content of the residual sludge in the filtering and settling zone is reduced, the water body in the filtering and settling zone is prevented from becoming turbid, the residual sludge flows out along with the effluent of equipment, and the requirement of water treatment standard cannot be met.

2. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein a sludge hopper is arranged at an inlet of a filtering and settling zone communicated with an aerobic zone.

The sludge hopper is arranged at the inlet of the filtering and settling zone, and the flowing area of the filtering and settling zone is suddenly enlarged compared with the inlet after the water body enters the filtering and settling zone from the inlet, therefore, the flow velocity of the water body is instantly slowed down, partial excess sludge in the water body is accumulated at the inlet, the sludge hopper is arranged at the inlet to collect the excess sludge to the maximum, and meanwhile, the water body in the sludge hopper is relative to the water body flowing nearby, it is close to quiescent condition, and consequently the excess sludge of aquatic also can remove in to the sludge bucket of being convenient for realizes collecting the effect, piles up the excess sludge at the entrance in addition and also plays the interception effect, makes excess sludge further gather at the entrance, generates great mud, sets up the sludge bucket at the entrance, falls into the sludge bucket when also being convenient for great mud whereabouts, thereby discharges.

3. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein a plurality of sludge hoppers are arranged, a water flow channel is formed between every two adjacent sludge hoppers, and a water body enters a filtering and settling zone through the water flow channel.

According to the utility model, the sludge hoppers are arranged, and the water flow channel is formed between the adjacent sludge hoppers, so that on one hand, the sludge hoppers are convenient for multi-position collection of the filtering and settling zone, the collection speed and the collection effect are enhanced, and the problem that the water outlet effect is influenced because the residual sludge concentration at part of the position of the water body in the filtering and settling zone is high can be avoided, and on the other hand, the water body enters the filtering and settling zone from the water flow channel between the sludge hoppers, so that the residual sludge in the water body can be conveniently moved into the sludge hoppers, and the moving path of the water body is shortened.

4. The utility model provides a central continuous flow two-oxygen composite particle sludge purification treatment device, which further comprises a first separating cylinder, wherein the first separating cylinder is arranged in the main body, a filtering and settling area is formed between the first separating cylinder and the main body, an inlet of the filtering and settling area is formed between the lower end part of the first separating cylinder and the main body, and a sludge hopper is connected with the first separating cylinder.

According to the utility model, a filtering and settling zone is formed between the first separating cylinder and the main body, an inlet of the filtering and settling zone is formed between the lower end part of the first separating cylinder and the main body, and a water body enters the filtering and settling zone from bottom to top from the inlet, so that residual sludge in the water body is conveniently accumulated at the inlet, and larger formed sludge is conveniently dropped into the sludge hopper.

5. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, which also comprises a sludge backflow control cylinder, wherein the sludge backflow control cylinder is arranged in the main body and forms a sludge backflow channel with the main body, the sludge backflow control cylinder extends into the filtering and settling zone, an inlet of the filtering and settling zone is formed between the sludge backflow control cylinder and the lower end part of the first separating cylinder, and the sludge hopper is connected with the sludge backflow control cylinder.

The utility model is provided with the sludge backflow control cylinder, an inlet of a filtering sedimentation area is formed between the sludge backflow control cylinder and the lower end part of the first separating cylinder, a sludge backflow channel is formed between the sludge backflow control cylinder and the main body, when water enters the filtering sedimentation area from the inlet and rises above the sludge backflow control cylinder, the flow velocity of the water is slowed down again due to the fact that the area of the water flow is suddenly increased again, and part of residual sludge which rises to the position along with the water body passes through the sludge backflow control cylinder and enters the sludge backflow channel to flow back, so that the content of the residual sludge in the filtering sedimentation area is further reduced, and the purification effect of effluent is improved.

6. According to the central continuous flow two-oxygen composite particle sludge purification treatment device provided by the utility model, at least part of the first separating cylinder is bent towards the sludge hopper.

The first separating cylinder is at least partially bent towards the sludge hopper, so that residual sludge in the water body can conveniently move towards the sludge hopper in a guiding manner, and simultaneously, larger generated sludge can conveniently fall into the sludge hopper.

7. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein a three-phase separation plate is arranged at an inlet of a filtering and settling zone, the three-phase separation plate is provided with a first exhaust pipe extending out of the filtering and settling zone, and a sludge hopper is arranged on the three-phase separation plate.

According to the utility model, the three-phase separation plate is arranged at the inlet of the filtering and settling zone, the water body impacts the three-phase separation plate and then enters the filtering and settling zone, and in the impacting process, gas in the water body is separated out and discharged by the first exhaust pipe, so that the phenomenon that the gas enters the filtering and settling zone to influence the movement and aggregation of the residual sludge to the sludge hopper is avoided, and meanwhile, part of the residual sludge and larger sludge cannot enter the filtering and settling zone due to the blockage of the three-phase separation plate, so that the effect of reducing the content of the residual sludge in the filtering and settling zone is achieved.

8. The utility model provides a central continuous flow two-oxygen composite particle sludge purification treatment device, which also comprises a first separating cylinder, a second separating cylinder and a third separating cylinder, wherein the first separating cylinder is arranged in the main body, and a filtering sedimentation area is formed between the first separating cylinder and the main body; the three-phase separation plate is disposed on the main body and extends toward the first partition cylinder.

According to the utility model, a filtering sedimentation area is formed between the first separating cylinder and the main body, and the three-phase separating plate is arranged on the main body and extends towards the first separating cylinder, so that a water body enters the filtering sedimentation area after impacting the three-phase separating plate.

9. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein a filtering sedimentation zone comprises a first sedimentation zone which is communicated with an aerobic zone and is provided with a sludge hopper; and the separation device is communicated with the first settling zone and is positioned above the first settling zone.

According to the utility model, the separation device is arranged above the first settling zone, and when water passes through the separation device, residual sludge carried by the water is further separated out, gathered and falls down, so that the water falls into the sludge hopper to be discharged, and the purification effect of discharged water is further enhanced.

10. The utility model provides a central continuous flow two-oxygen composite particle sludge purification treatment device, which further comprises a second separating cylinder arranged in the main body, wherein a transition area is formed between the second separating cylinder and the first separating cylinder, one side of the second separating cylinder, which is different from the transition area, is formed into an aerobic area, and water rising in the aerobic area enters the transition area through the top of the second separating cylinder and flows out of the bottom of the transition area to the filtration and sedimentation area.

According to the utility model, the second separating cylinder is arranged, the transition region is formed between the second separating cylinder and the first separating cylinder, so that the water body rising in the aerobic region enters the transition region through the top of the second separating cylinder, and the transition region is a non-aeration region, so that the water body can carry out dynamic standing mud-water primary separation in the transition region, and the sludge is settled, compressed and gathered from the water body, thereby promoting granulation of floc sludge, reducing the content of the floc sludge entering the filtering and settling region along with the water body, enhancing the purification effect of effluent and reducing the collection pressure of a sludge hopper; in addition, the transition area also makes full use of the space in the main body, and the space utilization rate of the device is improved.

11. The utility model provides a central continuous flow two-oxygen composite particle sludge purification treatment device, wherein an opening suitable for returning sludge to an aerobic zone is arranged at the bottom of a transition zone.

The bottom of the transition zone is provided with an opening suitable for the sludge to flow back to the aerobic zone, the sludge separated from the transition zone and the sludge falling back from the filtering and settling zone enter the aerobic zone from the opening, the sludge is prevented from being accumulated at the bottom of the transition zone and filling the space of the water body, meanwhile, the sludge enters the aerobic zone and can supplement granular sludge and nitrobacteria in the aerobic zone, and the water purification effect of the aerobic zone is improved.

12. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, which further comprises an anoxic zone tank body arranged in the main body, wherein an anoxic zone is formed inside the anoxic zone tank body, and the aerobic zone is formed between the anoxic zone tank body and the second partition cylinder; the water inlet part is communicated with the anoxic zone, and the anoxic zone is positioned at the upstream of the aerobic zone.

The utility model is provided with the anoxic zone tank body to form the anoxic zone, the water body containing sewage firstly enters the anoxic zone from the water inlet part for denitrification reaction and then enters the aerobic zone for subsequent reaction treatment, thereby enhancing the water purification effect of the utility model equipment.

13. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein an aerobic zone water inlet pipe communicated with an aerobic zone is arranged in an anoxic zone tank body, and a water distribution piece is arranged at the outlet of the aerobic zone water inlet pipe.

The water outlet of the anoxic zone enters the aerobic zone through the water inlet pipe of the aerobic zone, and the water distribution piece is arranged at the outlet of the water inlet pipe of the aerobic zone, so that the water outlet of the water inlet pipe of the aerobic zone firstly impacts on the water distribution piece and enters the aerobic zone after being subjected to the water distribution action of the water distribution piece, the water inlet of the aerobic zone can be uniform under the water distribution action of the water distribution piece, the water flow in the aerobic zone is prevented from being influenced, and the aerobic reaction effect in the aerobic zone is further ensured.

14. The utility model provides a central continuous flow two-oxygen composite granular sludge purification treatment device, wherein a water distribution piece is a bent piece, one end of the water distribution piece, which is connected with a main body, is provided with an outlet of an aerobic zone water inlet pipe, and a water distribution port is arranged between the other end of the water distribution piece and the main body.

The water distributing member of the utility model is provided with an outlet of the aerobic zone water inlet pipe at one end connected with the main body, and a water distributing port is arranged between the other end and the main body, and water flows out of the water distributing port and flows downwards along the main body to uniformly participate in the mixing and aerobic reaction process in the aerobic zone, thereby avoiding the phenomenon that the water is directly sprayed into the aerobic zone to cause over-high local load and disturb the flow and mixing process of the water.

15. The utility model provides a central continuous flow two-oxygen composite particle sludge purification treatment device, which further comprises a water body accelerating tube, wherein 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 a water body.

The water body acceleration pipe is arranged to enable the water body containing the sewage to enter the anoxic zone from the water inlet part, and at least one part of the inner diameter of the water body acceleration pipe is reduced, so that the instantaneous flow velocity of the water body is increased at the position, the flow velocity of the water body is further improved, the flow velocity requirement of the water body flow is met, an additional power device is not needed, the energy consumption can be reduced, and the processing complexity of the device is reduced.

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 front sectional view of example 1 of the present invention;

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

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

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

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2;

FIG. 6 is a top view of example 1 of the present invention;

FIG. 7 is a schematic view of a fender structure provided in embodiment 1 of the present invention;

fig. 8 is a partial structural schematic diagram of embodiment 2 of the present invention.

Description of reference numerals:

1. a water inlet part; 2. a circulation pipe; 3. a reaction zone; 4. a water inlet pipe of the aerobic zone; 5. an aerator; 6. a three-phase separator plate; 7. an aerobic zone; 8. a water distribution member; 9. water passing holes; 10. a transition zone; 11. a fender; 12. a second return pipe; 13. a first exhaust pipe; 14. a second sludge return channel; 15. a sludge reflux control cylinder; a first sludge recirculation channel; 17. a flow stabilizer; 18. a sludge hopper; 19. a sludge discharge branch pipe; 20. sludge discharging pipes; 21. sludge internal drainage pipes; 22. a second settling zone; 23. a separation device; 24. an effluent weir; 25. a water outlet part; 26. a manhole; 27. emptying the pipe; 28. a tank body in an anoxic zone; 29. a water acceleration pipe; 30. a mixing zone; 31. a channel; 32. a first return pipe; 33. a second partition cylinder; 34. a choke plate; 35. a first partition cylinder; a first settling zone; 37. a main body; 38. a second sludge discharge main pipe; 39. a first sludge discharge main pipe; 40. a first guide plate.

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 central continuous flow two-oxygen composite particle sludge purification treatment device, as shown in figures 1-7, comprising

The main body 37 is provided with a water inlet part 1 and a water outlet part 25, the water inlet part 1 is used for introducing a water body containing sewage into the main body 37, and the water outlet part 25 is used for introducing the water body treated by the equipment; in this embodiment, the material of the main body 37 is not limited, and a steel structure, a concrete structure, a polymer material, or the like may be used.

The filtering and settling zone is arranged in the inner space of the main body 37, is communicated with the aerobic zone 7, and is located at a downstream position of the aerobic zone 7, in this embodiment, a first partition cylinder 35 is arranged in the main body 37, and the filtering and settling zone is formed between the first partition cylinder 35 and the main body 37 and is used for settling a water body and improving a water purification effect.

In this embodiment, the structure of the filtering and settling zone is not particularly limited, preferably, as shown in fig. 1, an inlet of the filtering and settling zone is formed between the lower end of the first partition cylinder 35 and the main body 37, and the water body enters the filtering and settling zone from bottom to top through the inlet, so that the excess sludge containing small sludge and suspended matters in the water body is accumulated at the inlet, and when the sludge hopper 18 is arranged at the inlet, the excess sludge is collected by the sludge hopper, and the formed large sludge falls into the sludge hopper 18; of course, in other embodiments, the first partition 35 may be provided with an inlet located at the side of the filter settling zone.

Further, the first separating cylinder 35 is at least partially bent towards the inlet, and when the sludge hopper 18 is arranged at the inlet, the first separating cylinder is bent towards the sludge hopper 18, so that the residual sludge in the water body can be guided to move towards the sludge hopper 18, and meanwhile, the generated large sludge can fall into the sludge hopper 18.

Further, in order to reduce the content of the excess sludge in the filtration and sedimentation zone, a sludge backflow control cylinder 15 is arranged in the main body 37, a first sludge backflow channel 16 is formed between the sludge backflow control cylinder 15 and the main body 37, the sludge backflow control cylinder 15 extends into the filtration and sedimentation zone, an inlet of the filtration and sedimentation zone is formed between the sludge backflow control cylinder 15 and the lower end part of the first separation cylinder 35, when a water body enters the filtration and sedimentation zone from the inlet and rises above the sludge backflow control cylinder 15, the flow velocity of the water body is slowed down again due to the suddenly increased water flow area, and therefore, part of the excess sludge which rises to the water body passes through the sludge backflow control cylinder 15 and enters the first sludge backflow channel 16 to flow back.

Preferably, as shown in fig. 1 and 2, the filtering and settling zone of the embodiment comprises a first settling zone 36 which is communicated with the aerobic zone 7 and is provided with a sludge hopper 18; the separation device 23 is communicated with the first settling zone 36 and is positioned above the first settling zone 36, the separation device 23 of the embodiment includes a plurality of blocking members which are arranged obliquely and in parallel, the blocking members can be pipes or plates, a water flow channel is formed between adjacent blocking members, when a water body flows out from the water flow channel, residual sludge can be blocked and adsorbed on the blocking members, and the water body falls after being further gathered, so that the water purification effect can be further improved, suspended matters in the water discharged by the embodiment are reduced, and the water body can enter the water outlet weir 24 arranged above the separation device 23 after flowing out of the separation device 23 and then is discharged from the water outlet part 25; of course, in other embodiments, the separation device 23 may not be provided, and only a certain space is provided as a filtering and settling area to allow the water body to be subjected to precipitation separation.

Further, the filtration settling zone further includes a flow stabilizer 17, the flow stabilizer 17 of this embodiment includes a plurality of stoppers that are disposed in an inclined and parallel manner, and the stoppers of the separation device 23 and the stoppers of the flow stabilizer 17 are disposed in a non-parallel manner, the flow stabilizer 17 is communicated with the first settling zone 36 and is located at a downstream position of the first settling zone 36, and a second settling zone 22 is formed between the flow stabilizer 17 and the separation device 23, the second settling zone 22 further enables the water body to be precipitated and separated, and the flow stabilizer 17 stabilizes the flow of the water body, thereby preventing the water body from flowing unevenly and disturbing the state of the water body in the second settling zone 22.

And a sludge hopper 18 which is arranged in the filtering and settling zone and is provided with a sludge discharge pipeline extending out of the main body 37 so as to collect the residual sludge in the water body in the filtering and settling zone and discharge the residual sludge through the sludge discharge pipeline.

The position of the sludge hopper 18 is not particularly limited in this embodiment, and preferably, as shown in fig. 2, one side of the sludge hopper 18 of this embodiment is connected with the first separating cylinder 35, and the other side is connected with the sludge reflux control cylinder 15, so that the sludge hopper 18 is arranged at the inlet of the filtering and settling zone communicated with the aerobic zone 7, so as to collect the residual sludge gathered at the inlet; of course, in other embodiments, when the sludge return control barrel 15 is not provided, the other side of the sludge hopper 18 is directly connected to the main body 37.

Further, sludge bucket 18 of this embodiment is equipped with a plurality of, preferably is four that equidistant setting, and is adjacent form the rivers passageway between sludge bucket 18, and the water is got into by rivers passageway filter the settling zone, a plurality of sludge bucket 18 is convenient for carry out the collection of multiposition to filtering the settling zone on the one hand, strengthens collection speed and collection effect, and it is higher also to avoid filtering the water in the settling zone to have partial position surplus sludge concentration, and then influences the problem of water effect, and on the other hand, the water gets into the filter settling zone by the rivers passageway between sludge bucket 18, and the surplus sludge in the water of also being convenient for removes in to sludge bucket 18, shortens its removal route.

The structure of the sludge discharge pipeline is not specifically limited in this embodiment, and preferably, as shown in fig. 2, the sludge discharge pipeline of this embodiment includes a sludge hopper 18 communicated with the sludge hopper for discharging sludge in the sludge hopper 18 to an external sludge discharge pipe 20 outside a main body 37, further, an internal sludge discharge pipe 21 is arranged on the external sludge discharge pipe 20 and communicated with the anoxic zone for utilization, impurities in the water body are adsorbed in the anoxic zone by utilizing the adsorption effect of the sludge, and larger sludge is further formed, so that the water purification effect of the anoxic zone is enhanced.

Aerobic zone 7 sets up the inner space of main part 37, with the portion 1 intercommunication of intaking, this embodiment is in set up the second in the main part 37 and separate a section of thick bamboo 33, the second separates the inside aerobic zone 7 that forms of a section of thick bamboo 33, is equipped with aeration equipment in aerobic zone 7 for the water carries out the aerobic reaction including nitration in aerobic zone 7, and the aerobic reaction of this embodiment indicates aerobic microorganism degradation reaction, and aerobic zone 7 is equipped with the outer evacuation pipe 27 of intercommunication main part 37 for in maintenance and clean messenger's evacuation to aerobic zone 7, be used for simultaneously with the accumulational mud discharge in aerobic zone 7.

The structure of the aeration device is not specifically limited in this embodiment, preferably, as shown in fig. 1 and 3, the aeration device of this embodiment includes a plurality of aerators 5, the plurality of aerators 5 are communicated through a gas pipeline, and the plurality of aerators 5 are arranged in a plurality of annular structures surrounding an anoxic tank 28, so that the gas uniformly enters an aerobic zone 7 to perform a sufficient aerobic reaction, and simultaneously the ascending gas of the annularly arranged aerators 5 forms an air curtain in the aerobic zone 7 to drive 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, the mixing and reaction of the water body and nitrobacteria are promoted by the circulating mixing action of the longitudinal vortexes, and the suspension and hydraulic wiping of the longitudinal vortexes are beneficial to the suspension and hydraulic wiping of the granular sludge, thereby promoting the generation of the granular sludge, and thus improving the mixed state benefit in the aerobic zone 7, furthermore, the water purification effect is improved, in addition, as the granular sludge is arranged in the aerobic zone 7, not only the aerobic reaction is carried out in the aerobic zone 7, but also the synchronous nitrification and denitrification reaction can be realized, and simultaneously, as the granular sludge has the purification function, the purification effect of the embodiment can be improved, so that 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 of that of the prior art; of course, in other embodiments, the aeration device may be sufficient to introduce gas into the aerobic zone 7.

For furtherly, for reducing the mud content that gets into in the filtration settlement zone, this embodiment separates a section of thick bamboo 33 and first separating and set up transition zone 10 between a section of thick bamboo 35 at the second, the water that the aerobic zone 7 rose passes through the top that a section of thick bamboo 33 was separated to the second gets into transition zone 10 and follow the bottom of transition zone 10 flows to the filtration settlement zone, because transition zone 10 is non-aeration zone, consequently the water can carry out the preliminary separation of dynamic muddy water that stews in transition zone 10, and mud subsides, compression, gathers from the water to the granulation of floc mud has been promoted, thereby the content of the floc mud that reduces to get into the filtration settlement zone along with the water.

In order to prevent sludge from accumulating at the bottom of the transition zone 10 and occupying the space for containing the water body, an opening is further provided at the bottom of the transition zone 10, which is suitable for the sludge to flow back to the aerobic zone 7, in this embodiment, the bottom of the first separation barrel 35 and the main body 37 form the opening, and the opening is located below the outlet end of the first sludge return channel 16, so that the sludge flowing back in the first sludge return channel 16 can enter the aerobic zone 7 through the opening, and further so that the sludge flowing back in the first sludge return channel 16 can enter the opening without being disturbed by the flow of the water body in the transition zone 10, preferably, the sludge return control barrel 15 extends into the transition zone 10 and blocks the flow direction of the water body.

Because the aeration device is arranged in the aerobic zone 7, in order to prevent the gas in the aerobic zone 7 from entering the transition zone 10 through the opening at the bottom of the transition zone 10 communicated with the aerobic zone 7, the state of the water in the transition zone 10 is affected, and the sludge is prevented from entering the aerobic zone 7, the gas baffle plate 34 is further arranged at the opening, and the gas baffle plate 34 is positioned in the aerobic zone 7, and the gas baffle plate 34 is a plate body welded with the second partition cylinder 33 or detachably connected through a bolt and extends towards the bottom of the aerobic zone 7 to form a barrier at the opening, so that the gas is prevented from entering the transition zone 10.

The position of the gas baffle 34 is not limited in this embodiment, and preferably, as shown in fig. 1, the opening of the bottom of the transition zone 10 communicating with the aerobic zone 7 is arranged above the water inlet pipe 4 of the aerobic zone, the gas baffle 34 is arranged in parallel with the water distribution member 8 at the outlet of the water inlet pipe 4 of the aerobic zone, so that the opening forms the second sludge return channel 14 with a certain distance, and the opening of the bottom of the transition zone 10 communicating with the aerobic zone 7 is arranged as the second sludge return channel 14 with a certain distance to block the gas and prevent the gas from entering the transition zone 10.

In order to prolong the retention time of the water body in the transition zone 10, fully perform primary mud-water separation and improve the effects of mud-water separation and floc sludge granulation, in the embodiment, the inner cavity of the transition zone 10 is at least partially bent to form an inclined part, the bottom of the inclined part is communicated with the aerobic zone 7, and the inclined part is arranged, so that the path length of the transition zone 10 is prolonged, and meanwhile, the inclined part also has a guiding function, so that the granular sludge with better settleability falls on the side wall of the inclined part in the falling process and then moves towards the communication part between the bottom of the transition zone 10 and the aerobic zone 7 under the guiding function, and the granular sludge with better settleability is convenient to enter the aerobic zone 7; in the embodiment, the inclined part of the transition region 10 is formed by the inclined part of the first partition cylinder 35 and the inverted cone part of the second partition cylinder 33, so that the structural arrangement of the embodiment is more reasonable, and the space in the main body 37 is fully utilized; of course, in other embodiments, the inclined portion may not be provided when the height of the main body 37 is such that the path of the transition zone 10 is satisfactory, in which case the inlet of the filter settling zone is provided at the side thereof.

In this embodiment, the mode of the water body entering the transition zone 10 from the aerobic zone 7 is not particularly limited, and preferably, as shown in fig. 1, a plurality of water through holes 9 are uniformly arranged at the top of the second partition cylinder 33, the water through holes 9 are preferably square through holes so as to facilitate screening of sludge and enable the water body to uniformly flow out, and the water body in the aerobic zone 7 passes through the water through holes 9 and enters the transition zone 10; of course, in other embodiments, the body of water may also directly flow over the second partition 33 into the transition zone 10.

An anoxic zone tank 28 arranged in the main body 37, wherein an anoxic zone is formed inside the anoxic zone tank 28, and the aerobic zone 7 is formed between the anoxic zone tank 28 and the second partition 33, that is, the aerobic zone 7 and the anoxic zone are simultaneously arranged in this embodiment, that is, two-oxygen recombination is performed; go into water portion 1 intercommunication the anoxic zone, the anoxic zone is located the upper reaches in aerobic zone 7 carries out denitrification to the water through setting up the anoxic zone, and the manhole 26 of the anoxic zone jar body 28 of this embodiment seals the setting to set up in manhole 26 below and stretch into the second blast pipe in aerobic zone 7 to the gas that the impact of discharge water and denitrification produced avoids gas to occupy the anoxic zone space, reduces the processing water yield of this embodiment.

The anoxic zone tank body 28 is provided with an aerobic zone water inlet pipe 4 communicated with the aerobic zone 7, and a water distribution piece 8 is arranged at the outlet of the aerobic zone water inlet pipe 4.

The structure of the water distribution member 8 is not specifically limited in this embodiment, and preferably, as shown in fig. 1, the water distribution member 8 of this embodiment is a bent member, an outlet of the aerobic zone water inlet pipe 4 is disposed at one end of the water distribution member 8 connected to the main body 37, a water distribution port is disposed between the other end of the water distribution member 8 and the main body 37, the water body flows out from the water distribution port and flows to the bottom of the aerobic zone 7 under the action of gravity along the side wall of the main body 37, and is driven by the gas of the aeration device to move upward to enter the transition zone 10, and in the process that the water body flows to the bottom of the aerobic zone 7, the water body contacts with the rising gas generated by the aeration device to perform pre-oxygen supply, so as to improve the speed and effect of the subsequent aerobic reaction.

The structure of the anoxic zone is not specifically limited in this embodiment, and preferably, as shown in fig. 1, the anoxic zone of this embodiment includes a mixing zone 30, which is communicated with the water inlet part 1; a reaction zone 3 communicating with said mixing zone 30 through a channel 31; the first return pipe 32 is provided with a return water inlet end and a return water outlet end, the return water inlet end is communicated with the reaction zone 3, the return water outlet end is communicated with the mixing zone 30, the inlet end of the water inlet pipe 4 of the aerobic zone is communicated with the reaction zone 3, water firstly enters the mixing zone 30 from the water inlet part 1 and is fully mixed under the action of stirring equipment, the contact probability of denitrifying bacteria and the water is improved, the water and the denitrifying bacteria are fully mixed, then the water enters the reaction zone 3, the water fluidity is reduced because stirring equipment is not arranged in the reaction zone 3, the water can be fully subjected to denitrifying reaction in the reaction zone 3, and further the anoxic zone can complete the full denitrifying reaction, the first return pipe 32 is used for returning part of the water in the reaction zone 3 to the mixing zone 30, so that dominant denitrifying bacteria formed in the reaction zone 3 can flow back to participate in the mixing zone 30, raw water can be directly mixed and diffused with dominant denitrifying strains, the strain selection time in an anoxic zone is greatly shortened, and water subjected to denitrification reaction in the reaction zone 3 enters an aerobic zone 7 through an aerobic zone water inlet pipe 4; of course, the reaction in the reaction zone 3 and the mixing zone 30 is not an absolute division, and there is a mixing process in the reaction zone 3 and a denitrification reaction in the mixing zone 30.

The present embodiment is not particularly limited to the structure of the channel 31, and preferably, as shown in fig. 1, the channel 31 is bent and the bent end extends toward the circulation water outlet of the circulation pipe 2. Make passageway 31 have the effect of blockking, block beneficial mud on the one hand and remain in mixing zone 30 for participate in hydraulic circulation stirring and purify the water, on the other hand can block in the water gets into reaction zone 3 in a large number, guarantee the water yield of participating in hydraulic circulation stirring in mixing zone 30, in addition, make the play water of passageway 31 opening part be in the reaction zone 3 and sweep the flow state, can prevent to produce mud in the reaction zone 3 and pile up.

A first guide plate 40 is further arranged in the reaction zone 3, the first guide plate 40 extends towards the water outlet of the channel 31, so that the effluent of the channel 31 impacts on the first guide plate 40 to change the flowing direction and the flowing speed of the water body, the mixing of denitrifying bacteria and the water body is promoted through the disturbance of the water body, in addition, the first guide plate 40 can discharge the effluent of the channel 31, the flowing speed reduction of the water body in the reaction zone 3 is ensured, and the full denitrification reaction is carried out; the first guide plate 40 may be removably fixedly attached to the anoxic zone tank 28 by welding or bolting.

As a preferred scheme, the first guide plate 40 is provided with meshes, so that the outlet water of the channel 31 passes through the meshes to rise, the first guide plate 40 is prevented from causing large resistance to the outlet water of the channel 31, the water body is prevented from entering the reaction zone 3, and meanwhile, the meshes can prevent gas and sludge from being accumulated below the first guide plate 40.

The stirring device in the mixing zone 30 of this embodiment adopts a hydraulic circulating stirring manner to reduce the energy consumption of this embodiment; the water accelerating tube 29 is arranged in the mixing area 30, is arranged in the anoxic area and is connected with the water inlet part 1, at least one part of the inner diameter of the water accelerating tube 29 is reduced along the flowing direction of the water body so as to accelerate the water body, thereby meeting the requirement of the flow velocity of the water body for hydraulic circulation stirring, and making the embodiment not need to arrange an additional auxiliary power device, the part with the smaller inner diameter of the water accelerating tube 29 can be arranged 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 flowing resistance of the water body, the cross section of the water accelerating tube 29 can adopt the shapes of rectangle, polygon, circle and the like, and the embodiment adopts a circle shape for avoiding the dead angle generated on the tube wall of the water accelerating tube 29.

In order to further promote the water body to be fully mixed and stirred in the mixing zone 30, the circulating pipe 2 is covered outside the water body accelerating pipe 29, 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 bottom walls of the water body accelerating pipe 29 and the main body 37, so that the circulating water inlet is communicated with the water inlet part 1, the water body accelerated by the water body accelerating pipe 29 enters the circulating pipe 2 and then enters the mixing zone 30 from the circulating water outlet, the water flow velocity at the outlet of the water body accelerating pipe 29 is increased due to the reduction of at least one part of the inner diameter of the water body accelerating pipe 29, according to the Bernoulli principle, the water pressure at the outlet of the water body accelerating pipe 29 is relatively low, and the water body in the mixing zone 30 can enter the circulating pipe 2 again through the gaps at the position of the circulating water inlet under the action of low 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, and the water body is fully mixed with the denitrifying bacteria in the mixing zone 30; of course, in other embodiments, the stirring device may not be a hydraulic circulation stirring device, but a mechanical stirring device.

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 has at least a portion of its inner diameter reduced along the water flowing direction, so as to accelerate the water re-entering the circulation pipe 2 from the mixing zone 30 and the water sprayed from the water accelerating pipe 29, further increase the flow velocity of the water, ensure the water can be continuously stirred by hydraulic circulation, and simultaneously reduce the requirement of the water accelerating pipe 29 on the acceleration of the water, and further reduce the requirement of the flow velocity of the water entering the water accelerating pipe 29, thereby reducing the power and energy consumption required for introducing the water into the water accelerating pipe 29, further, the transition portion where the inner diameter of the circulation pipe 2 is changed is tapered to reduce the resistance of the water flowing, and simultaneously, in order to facilitate the water of the circulation pipe 2 to be uniformly diffused into the anoxic zone, preferably, the circulation water outlet of the circulation pipe 2 is provided in a diffusion shape.

In this case, in order to avoid the outlet water from the circulation pipe 2 directly entering the reaction zone 3, the present embodiment preferably arranges the channel 31 at the end of the anoxic zone away from the circulation water outlet of the circulation pipe 2.

In order to promote the water in the reaction zone 3 to flow back into the mixing zone 30 through the first return pipe 32, it is preferable to connect the return outlet end of the first return pipe 32 with the lower end of the circulation pipe 2, and the water is driven to flow back by the negative pressure generated at the outlet of the water acceleration pipe 29, and at the same time, the water is prevented from entering the first return pipe 32 from the return outlet end, however, in other embodiments, the return outlet end of the first return pipe 32 may also be connected with the water acceleration pipe 29, and the water is also driven to flow back by the negative pressure generated at the outlet of the water acceleration pipe 29, and in order to prevent the water of the water inlet portion 1 from entering the first return pipe 32, it is preferable to extend the return outlet end of the first return pipe 32 to the portion of the water acceleration pipe 29 with reduced inner diameter.

To promote the return of the sludge in the sludge hopper 18 to the anoxic zone, it is also preferable to connect the sludge internal discharge pipe 21 to the water acceleration pipe 29 and extend the outlet to the portion where the inner diameter of the water acceleration pipe 29 is reduced; of course, in other embodiments, the outlet of the sludge inside pipe 21 can be connected to the lower end of the circulating pipe 2.

Further, this embodiment sets up second back flow pipe 12 for promoting the denitrification effect in the anoxic zone, its entry end is located in transition zone 10, its exit end with in the anoxic zone for with the liquid of nitrifying in transition zone 10 backward flow to the anoxic zone in, thereby promote the denitrification effect in the anoxic zone.

The outlet of the second return pipe 12 is not particularly limited in this embodiment, and preferably, as shown in fig. 1, the outlet of the second return pipe 12 is communicated with the water acceleration pipe 29 and further extends to a part of the water acceleration pipe 29 with a reduced inner diameter; of course, in other embodiments, it may be in communication with the lower end of the circulation pipe 2.

For avoiding granular sludge and the great floc mud of volume in transition zone 10 to get into the anoxic zone through second back flow pipe 12, lead to the anoxic zone to be taken up reaction space by invalid mud, reduce the processing water yield of this device, further be equipped with fender 11 above the entry of second back flow pipe 12, fender 11 bending type becomes and keeps off the mud space, the entry setting of second back flow pipe 12 is in keep off in the mud space.

In the central continuous flow two-oxygen composite particle sludge purification treatment device provided in this embodiment, the flow path of the water body is as follows:

the water body enters the main body 37 from the water inlet part 1, and enters the mixing zone 30 through the circulating pipe 2 after being accelerated at the water body accelerating pipe 29, one part of the water body in the mixing zone 30 returns to the circulating pipe 2 for circular mixing, the other part of the water body enters the reaction zone 3 through the channel 31, one part of the water body in the reaction zone 3 returns to the mixing zone 30 through the first return pipe 32, the other part of the water body enters the aerobic zone 7 through the aerobic zone water inlet pipe 4, and flows to the lower part of the aerator 5 under the water distribution effect and the gravity effect of the water distribution piece 8, then the water body enters the transition zone 10 under the driving of the gas generated by the aerator 5, wherein, a part of nitrified liquid returns to the anoxic zone through the second return pipe 12, the majority of the water body enters the first settling zone 36 through the water flow channel formed between the sludge hoppers 18, the other part of the water body in the first settling zone 36 carries residual sludge to enter the sludge hoppers 18 and is discharged through the sludge outer discharge pipe 20, the bulk of the water passes through the flow stabilizer 17, the second settling zone 22 and the separation device 23 in sequence, and is discharged from the effluent portion 25 through the effluent weir 24.

Example 2

The central continuous flow two-oxygen composite particle sludge purification treatment device provided in this embodiment differs from embodiment 1 only in the structural position of the sludge hopper 18 and the structural position of the sludge discharge pipeline, and only the differences are described in this embodiment, as shown in fig. 8

The inlet of the filtering and settling zone is provided with a three-phase separation plate 6, the three-phase separation plate 6 is provided with a first exhaust pipe 13 extending out of the filtering and settling zone, the sludge hopper 18 is arranged on the three-phase separation plate 6, a water body enters the filtering and settling zone after impacting the three-phase separation plate 6, and in the impacting process, gas in the water body is separated out and discharged by the first exhaust pipe 13, so that the gas is prevented from entering the filtering and settling zone to influence the movement and aggregation of residual sludge to the sludge hopper 18, and meanwhile, part of residual sludge and larger sludge are blocked by the three-phase separation plate 6 and cannot enter the filtering and settling zone, so that the effect of reducing the content of residual sludge in the filtering and settling zone is achieved; the water body can generate turbulence after impacting the three-phase separation plate 6, and further plays a role in gathering sludge so as to separate the sludge.

The structure of the first exhaust pipe 13 is not particularly limited in this embodiment, and preferably, as shown in fig. 8, the outlet of the first exhaust pipe 13 is located in the aerobic zone 7, and the exhausted gas is exhausted from the top of the main body 37 together with the gas in the aerobic zone 7; of course, in other embodiments, the first exhaust pipe 13 may extend directly out of the main body 37 and be provided with an exhaust valve.

The structure of the three-phase separation plate 6 is not specifically limited in this embodiment, and preferably, the three-phase separation plate 6 is a plate welded or detachably disposed on the main body 37 through a bolt, and extends toward the first separating cylinder 35, so that the water body collides with the first separating cylinder, and gas is collected, so that the gas is collected in an included angle space formed between the three-phase separation plate 6 and the main body 37, and enters the first exhaust pipe 13 to be discharged.

The sludge discharge pipeline in the embodiment comprises a plurality of sludge discharge branch pipes 19, the sludge discharge branch pipes 19 are correspondingly connected with the sludge hoppers 18, the sludge discharge branch pipes 19 are all communicated with a first sludge discharge main pipe 39, the first sludge discharge main pipe 39 is an annular pipeline, sludge-water mixtures discharged from the sludge discharge branch pipes 19 are collected together, meanwhile, the first sludge discharge main pipe 39 plays a role in stabilizing pressure balance, the collecting suction forces of the sludge hoppers 18 are the same, so that water in a filtering and settling area is kept in a stable state, the problem that the water in the filtering and settling area is disturbed due to different suction forces of the sludge hoppers 18 is avoided, the settling state is disturbed, and the water outlet effect is influenced is solved; the first sludge discharging main pipe 39 discharges sludge out of the main body 37 through the second sludge discharging main pipe 38; of course, in other embodiments, the second sludge discharge main pipe 38 may be communicated with the anoxic zone.

the water body enters the main body 37 from the water inlet part 1, and enters the mixing zone 30 through the circulating pipe 2 after being accelerated at the water body accelerating pipe 29, one part of the water body in the mixing zone 30 returns to the circulating pipe 2 for circular mixing, the other part of the water body enters the reaction zone 3 through the channel 31, one part of the water body in the reaction zone 3 returns to the mixing zone 30 through the first return pipe 32, the other part of the water body enters the aerobic zone 7 through the aerobic zone water inlet pipe 4, and flows to the lower part of the aerator 5 under the water distribution effect and the gravity effect of the water distribution piece 8, and then enters the transition zone 10 under the driving of the gas generated by the aerator 5, wherein a part of nitrified liquid returns to the anoxic zone through the second return pipe 12, a part of the water body enters the first settling zone 36 after impacting the three-phase separation plate 6, and a part of the water body in the first settling zone 36 carries residual sludge into the sludge hopper 18 and passes through the sludge discharge branch pipe 19, The first sludge discharge main pipe 39 and the second sludge discharge main pipe 38 discharge, and most of the water body passes through the separation device 23 and then is discharged from the outlet portion 25 through the outlet weir 24.

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 utility model.

Claims

1. The central continuous flow two-oxygen composite particle sludge purification treatment device is characterized by comprising:

a main body (37) provided with a water inlet part (1) and a water outlet part (25);

the aerobic zone (7) is arranged in the inner space of the main body (37) and is communicated with the water inlet part (1), and an aeration device is arranged in the aerobic zone (7);

a filter settling zone disposed in the interior space of the body (37), in communication with the aerobic zone (7) and located downstream of the aerobic zone (7);

and the sludge hopper (18) is arranged in the filtering and settling zone and is provided with a sludge discharge pipeline.

2. The central continuous flow two-oxygen composite granular sludge purification treatment device according to claim 1, wherein the sludge hopper (18) is arranged at the inlet of the filtration and sedimentation zone communicated with the aerobic zone (7).

3. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 2, wherein a plurality of sludge hoppers (18) are provided, a water flow channel is formed between adjacent sludge hoppers (18), and water enters the filtration and sedimentation zone through the water flow channel.

4. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 3, further comprising:

the first separating cylinder (35) is arranged in the main body (37) and forms the filtering and settling area with the main body (37), an inlet of the filtering and settling area is formed between the lower end part of the first separating cylinder (35) and the main body (37), and the sludge hopper (18) is connected with the first separating cylinder (35).

5. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 4, further comprising:

the sludge backflow control cylinder (15) is arranged in the main body (37), a first sludge backflow channel (16) is formed between the sludge backflow control cylinder (15) and the main body (37), the sludge backflow control cylinder (15) extends into the filtering and settling area, an inlet of the filtering and settling area is formed between the sludge backflow control cylinder (15) and the lower end of the first separating cylinder (35), and the sludge hopper (18) is connected with the sludge backflow control cylinder (15).

6. The central continuous flow two-oxygen composite granular sludge purification treatment device according to claim 4, wherein the first separating cylinder (35) is at least partially bent towards the sludge hopper (18).

7. The central continuous flow two-oxygen composite granular sludge purification treatment device according to claim 1, wherein a three-phase separation plate (6) is arranged at the inlet of the filtration and sedimentation zone, the three-phase separation plate (6) is provided with a first exhaust pipe (13) extending out of the filtration and sedimentation zone, and the sludge hopper (18) is arranged on the three-phase separation plate (6).

8. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 7, further comprising:

a first partition (35) arranged in the main body (37) and forming the filtering and settling area with the main body (37);

the three-phase separation plate (6) is provided on the main body (37) and extends toward the first partition cylinder (35).

9. The central continuous flow two-oxygen composite particle sludge purification treatment device according to any one of claims 1 to 8, wherein the filtration and sedimentation zone comprises:

a first settling zone (36) which is communicated with the aerobic zone (7) and is provided with the sludge hopper (18);

a separation device (23) in communication with the first settling zone (36) and located above the first settling zone (36).

10. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 4 or 8, further comprising:

the second separating cylinder (33) is arranged in the main body (37), a transition area (10) is formed between the second separating cylinder (33) and the first separating cylinder (35), one side of the second separating cylinder (33) different from the transition area (10) forms the aerobic area (7), and water rising in the aerobic area (7) enters the transition area (10) through the top of the second separating cylinder (33) and flows out of the bottom of the transition area (10) to the filtering and settling area.

11. The central continuous flow two oxygen composite particle sludge purification treatment plant according to claim 10, characterized in that the bottom of the transition zone (10) is provided with an opening adapted for sludge return to the aerobic zone (7).

12. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 10, further comprising:

the anoxic zone tank body (28) is arranged in the main body (37), an anoxic zone is formed inside the anoxic zone tank body (28), and the aerobic zone (7) is formed between the anoxic zone tank body (28) and the second separating cylinder (33);

the water inlet part (1) is communicated with the anoxic zone, and the anoxic zone is positioned at the upstream of the aerobic zone (7).

13. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 12, wherein the anoxic zone tank (28) is provided with an aerobic zone water inlet pipe (4) communicated with the aerobic zone (7), and a water distribution member (8) is arranged at the outlet of the aerobic zone water inlet pipe (4).

14. The central continuous flow two-oxygen composite particle sludge purification treatment device according to claim 13, wherein the water distribution member (8) is a bent member, one end of the water distribution member (8) connected with the main body (37) is provided with an outlet of the aerobic zone water inlet pipe (4), and a water distribution port is arranged between the other end of the water distribution member (8) and the main body (37).

15. The central continuous flow two-oxygen composite particle sludge purifying treatment device according to claim 12, further comprising:

the water body accelerating tube (29) is arranged in the anoxic zone and connected with the water inlet part (1), and at least one part of the inner diameter of the water body accelerating tube (29) is reduced along the flowing direction of the water body.