CN215049474U - Centralized sewage treatment facility - Google Patents

Centralized sewage treatment facility Download PDF

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CN215049474U
CN215049474U CN202120219348.5U CN202120219348U CN215049474U CN 215049474 U CN215049474 U CN 215049474U CN 202120219348 U CN202120219348 U CN 202120219348U CN 215049474 U CN215049474 U CN 215049474U
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tank
treatment facility
water
pipe
centralized
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张静
吴昌敏
张远国
仇恒祥
张国强
雷燕
李菊芳
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Csd Water Service Co ltd
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Csd Water Service Co ltd
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Abstract

The utility model provides a centralized sewage treatment facility, which comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an auto-activated deep denitrification filter tank and a clean water tank which are sequentially communicated according to the water flow direction; the anaerobic tank is provided with a water inlet or a water inlet pipe, the bottom of the aerobic tank is provided with an aeration device, and biological fluidized bed fillers are added into the aerobic tank; the middle upper part of the sedimentation tank is provided with an inclined pipe for capturing activated sludge, and the overflow channels of the sedimentation tank and the self-activated deep denitrification filter are close to the upper layer of the inclined pipe; a composite filter material layer, a cobble layer and a filter brick layer are arranged from top to bottom in the active deep denitrification filter, and the composite filter material layer is used for removing solid suspended matters through the interception function and denitrifying sewage; the clean water tank is connected with the self-activated deep denitrification filter tank through an outer discharge pipe and a water production pump. The centralized sewage treatment facility can realize the function of high-efficiency denitrification and dephosphorization and can meet the requirement of higher standard water outlet.

Description

Centralized sewage treatment facility
Technical Field
The utility model relates to a sewage treatment field especially relates to a centralized sewage treatment facility.
Background
The sewage quantity of villages and towns in China is increasing day by day, a drainage pipe network is easy to lead in areas with relatively concentrated village and town residents, centralized sewage treatment implementation is adopted, the village and town sewage is collected and treated uniformly, and the village and town sewage is treated in a uniform collection, uniform conveying and uniform treatment mode. Compared with a distributed treatment mode, the treatment mode can reliably and effectively manage and control the sewage treatment plant, is beneficial to operation and maintenance, reduces the operation and maintenance cost and improves the quality of the effluent. The centralized integrated equipment for village and town sewage in the market at present has the problems that the effluent quality is difficult to stably reach the standard, the denitrification effect is common, the dosage of a medicament is large, the operation cost is high, and the impact load resistance is poor.
The centralized sewage treatment equipment in the current market adopts an improved A/O-coagulating sedimentation-sand filter tank, the process only converts ammonia nitrogen, the total nitrogen removal effect is poor, the TN of the discharged water cannot reach the standard stably, and the impact load resistance is poor; also by using A3The device is short of a materialized phosphorus removal system, the nitrogen removal effect is limited by the low carbon-nitrogen ratio of inlet water, the total nitrogen/total phosphorus of outlet water cannot stably reach the standard, and the material running phenomenon easily occurs in biological fluidized bed packing (MBBR packing).
Although the existing process has certain removal capacity on pollutants in water, the removal effect is poor, the standard is difficult to reach stably, the impact load resistance is poor, the nitrogen and phosphorus removal effect is general, and if the effluent reaches the standard, an external carbon source needs to be added, so that the operation cost is high.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present invention provide a centralized sewage treatment facility to obviate or mitigate one or more of the disadvantages of the prior art.
The technical scheme of the utility model as follows:
the sewage treatment facility comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an auto-activated deep denitrification filter tank and a clean water tank which are sequentially communicated according to the water flow direction; the anaerobic tank is provided with a water inlet or a water inlet pipe, the bottom of the aerobic tank is provided with an aeration device, and biological fluidized bed filler is added into the aerobic tank; an inclined pipe for capturing activated sludge is arranged at the middle upper part of the sedimentation tank, and the overflowing channels of the sedimentation tank and the self-activated deep denitrification filter are close to the upper layer of the inclined pipe; the self-activated deep denitrification filter is provided with a composite filter material layer, a cobble layer and a filter brick layer from top to bottom, wherein the composite filter material layer is used for removing solid suspended matters through the interception effect and denitrifying sewage; the clean water basin with pass through outer calandria and produce the water pump connection from active degree of depth denitrogenation filtering pond, outer calandria one end is connected to the below on the filter brick layer from active degree of depth denitrogenation filtering pond, the other end of outer calandria is connected to the clean water basin, it sets up to produce the water pump outer calandria is last.
In some embodiments, the sewage treatment facility further comprises a plant room, wherein an aeration fan is arranged in the plant room, the aeration fan is connected with an aeration device of the aerobic tank through a pipeline, and the aeration device comprises a plurality of uniformly arranged aeration discs.
In some embodiments, the sewage treatment facility further comprises a first return pipeline connected from the bottom of the aerobic tank to the bottom of the anoxic tank, and a mixed liquor return pump is arranged on the first return pipeline and used for pumping the mixed liquor in the aerobic tank to the anoxic tank.
In some embodiments, the sewage treatment facility further comprises a second return pipeline connected to the bottom of the anaerobic tank from the bottom of the sedimentation tank, and a sludge return pump is arranged on the second return pipeline and used for pumping the activated sludge in the sedimentation tank to the anaerobic tank.
In some embodiments, perforated pipes arranged according to a set mode are arranged at the bottoms of the anaerobic tank and the anoxic tank, the perforated pipes are uniformly arranged at the bottoms of the anaerobic tank and the anoxic tank, and through holes on the perforated pipes are uniformly arranged; the perforated pipe of the anoxic tank is connected with the first return pipeline, and the perforated pipe of the anaerobic tank is connected with the second return pipeline.
In some embodiments, the mixed liquor reflux pump is located at the bottom of the aerobic tank, the sludge reflux pump is located at the bottom of the equipment room, and the sludge reflux pump is also connected with a sludge discharge pipe and used for discharging residual sludge.
In some embodiments, the bottom of the self-activated deep denitrification filter is provided with a water distribution device and an air distribution device, a backwashing pump and a backwashing fan are arranged in the equipment room, the backwashing pump is connected with the water distribution device through a pipeline, and the backwashing fan is connected with the air distribution device through a pipeline.
In some embodiments, a dosing device is arranged in the equipment room, and the dosing device is connected to the sedimentation tank through a pipeline and used for adding a phosphorus removal agent.
In some embodiments, the composite filter material layer is arranged with a sulfur-based active component composite filter material for simultaneous nitrogen and phosphorus removal.
In some embodiments, the chute within the settling pond is configured with a self-cleaning device for cleaning the chute.
According to the utility model discloses centralized sewage treatment facility can obtain beneficial effect and include at least:
(1) the centralized sewage treatment facility provided by the embodiment of the utility model can adopt A2The O (MBBR) -high-efficiency precipitation-self-activity deep denitrification filter tank process can realize the high-efficiency denitrification and dephosphorization function and can meet the higher-standard effluent requirement.
(2) The utility model discloses centralized sewage treatment facility impact load resistance ability reinforce, goes out water stable in quality of water, need not the external source and throws the carbon source.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For convenience in illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:
fig. 1 is a schematic plan view of a centralized sewage treatment facility according to an embodiment of the present invention.
Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.
Description of reference numerals:
1-anaerobic tank, 2-anoxic tank, 3-aerobic tank, 4-sedimentation tank, 5-self-activated deep denitrification filter tank and 6-clean water tank
7-equipment room, 8-sludge reflux pump, 9-aeration fan, 10-aeration plate, 11-mixed liquor reflux pump and 12-filter brick layer
13-cobble layer, 14-composite filter material layer, 15-medicine adding device, 16-perforated pipe
17-backwashing pump, 18-backwashing fan, 19-water production pump, 20-inclined pipe, 21-automatic control system
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
The utility model provides a centralized sewage treatment facility to improve impact load resistance ability, total nitrogen clearance, and synchronous nitrogen and phosphorus removal reduces the operation cost, and need not the external source and throw the carbon source.
As shown in fig. 1 and 2, in some embodiments, the sewage treatment facility includes an anaerobic tank 1, an anoxic tank 2, an aerobic tank 3, a sedimentation tank 4, an auto-activated deep denitrification filter 5, and a clean water tank 6, which are connected in sequence in the water flow direction.
Wherein, the anaerobic tank 1 is provided with a water inlet or a water inlet pipe, the bottom of the aerobic tank 3 is provided with an aeration device, and the aerobic tank 3 is added with biological fluidized bed filler (MBBR filler). In this embodiment, the sewage enters the anaerobic tank 1, the anoxic tank 2 and the aerobic tank 3 through the water inlet or the water inlet pipe to remove organic matters and other pollutants in the sewage, and the anaerobic tank 1, the anoxic tank 2 and the aerobic tank 3 can be operated in the step A2And (4) O process. Biological fluidized bed packing (MBBR packing) is added into the aerobic tank 3 to increase the biomass in the aerobic tank 3 and improve the treatment efficiency. In some embodiments, the aeration device provided in the aerobic tank 3 can adopt a plurality of uniformly arranged aeration devicesAn air disk 10, and an aeration disk 10 can aerate the activated sludge in the aerobic tank 3 through an aeration fan 9 arranged in the equipment room 7.
Wherein, the middle upper part of the sedimentation tank 4 is provided with an inclined tube 20 for capturing activated sludge, and the overflow channels of the sedimentation tank 4 and the self-activated deep denitrification filter 5 are close to the upper layer of the inclined tube 20. In some embodiments, the treated sewage from the aerobic tank 3 flows into the sedimentation tank 4 for sludge-water separation, the sedimentation tank 4 can be an efficient sedimentation tank, and the activated sludge in the sedimentation tank 4 is captured by the inclined pipe 20 and returned to the sedimentation area, so as to ensure excellent effluent effect. In some embodiments, the inclined tube 20 in the sedimentation tank 4 is provided with a self-cleaning device, and the inclined tube 20 can be cleaned periodically.
Wherein, a composite filter material layer 14, a cobble layer 13 and a filter brick layer 12 are arranged from top to bottom of the active deep denitrification filter 5, and the composite filter material layer 14 is used for removing solid suspended matters through interception and denitrifying sewage. The effluent of the sedimentation tank 4 flows into the self-activated deep denitrification filter 5 and flows through the composite filter material layer 14, the cobble layer 13 and the filter brick layer 12 from top to bottom. In some embodiments, the composite filter layer 14 is configured with a phosphorus removal enhanced sulfur-based multi-active component composite filter for simultaneous phosphorus and nitrogen removal. Suspended solids or suspended matters are removed through the interception function when sewage flows through the sulfur-based multi-active component composite filter material, nitrate nitrogen/nitrite nitrogen in the sewage is reduced into nitrogen under the action of sulfur autotrophic denitrification microorganisms, iron autotrophic denitrification microorganisms and other microorganisms, so that nitrogen removal is realized, and metal ions slowly dissolved out from the sulfur-based multi-active component composite filter material react with phosphate in water to form insoluble substances and are intercepted by the filter material, so that the phosphorus removal function is realized.
Wherein, the clean water tank 6 is connected with the self-activated deep denitrification filter tank 5 through an outer discharge pipe and a water production pump 19, one end of the outer discharge pipe is connected to the lower part of the filter brick layer 12 of the self-activated deep denitrification filter tank 5, the other end of the outer discharge pipe is connected to the clean water tank 6, the water production pump 19 is arranged on the outer discharge pipe, and the standard-reaching effluent from the active deep denitrification filter tank 5 is discharged to the clean water tank 6 through the water production pump 19.
The utility model discloses centralized sewage treatment facility of embodiment adopts A2O (MBBR) -high-efficiency precipitation-self-activity deep denitrification filter tank processThe high-efficiency denitrification and dephosphorization function can meet the higher standard water outlet requirement.
In some embodiments, the sewage treatment facility further comprises a plant room 7, an aeration fan 9 is arranged in the plant room 7, the aeration fan 9 is connected with an aeration device of the aerobic tank 3 through a pipeline, and the aeration device comprises a plurality of uniformly arranged aeration discs 10.
In some embodiments, the sewage treatment facility further comprises a first return pipeline connected from the bottom of the aerobic tank 3 to the bottom of the anoxic tank 2, and the first return pipeline is provided with a mixed liquor return pump 11 for pumping the mixed liquor in the aerobic tank 3 to the anoxic tank 2.
In some embodiments, the sewage treatment facility further comprises a second return pipeline connected to the bottom of the anaerobic tank 1 from the bottom of the sedimentation tank 4, and a sludge return pump 8 is arranged on the second return pipeline and used for pumping the activated sludge in the sedimentation tank 4 to the anaerobic tank 1.
In some embodiments, the bottom of the anaerobic tank 1 and the anoxic tank 2 is provided with perforated pipes 16 arranged in a set manner, the perforated pipes 16 are uniformly arranged at the bottom of the anaerobic tank 1 and the anoxic tank 2, and the through holes on the perforated pipes 16 are uniformly arranged. The perforated pipe 16 of the anoxic pond 2 is connected with the first return pipeline, and the perforated pipe 16 of the anaerobic pond 1 is connected with the second return pipeline, so that the effects of sludge backflow and activated sludge stirring in the pond are achieved. For example, the perforated pipes 16 of the anaerobic tank 1 may be arranged in a ring shape, and the perforated pipes 16 of the anoxic tank 2 may be arranged in a criss-cross manner, but are not limited thereto, and may be arranged in other arrangements.
In some embodiments, the mixed liquor return pump 11 may be located at the bottom of the aerobic tank 3, the sludge return pump 8 may be located at the bottom of the equipment room 8, and the sludge return pump 8 is also connected to a sludge discharge pipe, which may be used for periodically discharging excess sludge.
In some embodiments, the bottom of the self-activated deep nitrogen removal filter 5 is provided with a water distribution device and an air distribution device, the equipment room 7 is internally provided with a backwashing pump 19 and a backwashing fan 18, the backwashing pump 19 is connected with the water distribution device through a pipeline, and the backwashing fan 18 is connected with the air distribution device through a pipeline. For example, the water distribution device and the air distribution device can adopt filter bricks or other structures.
In some embodiments, a dosing device 15 is disposed in the equipment room 7, and the dosing device 15 is connected to the sedimentation tank 4 through a pipeline for adding a phosphorus removal agent. Further, the dosing device 15 is connected to the upper part of the sedimentation tank 4 through a pipeline, and precipitates can be generated after the phosphorus removal agent is added, and the precipitates are synchronously precipitated in the sedimentation tank 4.
In some embodiments, biological fluidized bed filler (MBBR filler) is added into the aerobic tank 3 of the centralized sewage treatment facility, and compared with other biological fluidized bed fillers (MBBR filler), the biological fluidized bed filler (MBBR filler) adopted by the sewage treatment facility has the advantages of large specific surface area, high biological activity, fast film formation, small amount of residual sludge, good treatment effect and the like, and can improve the biomass of the oxygen tank and improve the treatment efficiency.
In some embodiments, the inclined pipe 20 is arranged at the upper part in the efficient sedimentation tank 4, the activated sludge is captured by the inclined pipe 20 and returned to the sedimentation area, so that an excellent water outlet effect is guaranteed, the inclined pipe 20 is provided with a self-cleaning device, the inclined pipe 20 can be cleaned periodically, and the efficient sedimentation tank 4 has the advantages of high-speed separation, ascending flow rate of 20-40m/h, small occupied area and good effect.
In some embodiments, the self-activated deep denitrification filter 5 adopts a sulfur-based multi-active-component composite filter material as a novel biological filter technology, and the process does not need an external carbon source, and has the advantages of fast denitrification and high load. The sulfur-based multi-active component composite filter material selected by the self-activated deep denitrification filter 5 is a phosphorus removal enhanced sulfur-based composite functional biological carrier, and the purpose of synchronous nitrogen and phosphorus removal can be achieved.
In some embodiments, the plant room 7 of the centralized sewage treatment facility is provided with an automatic control system 21, and the automatic control system 21 can be provided with a remote monitoring platform interface, so that unattended operation and remote control can be realized, and the common problems that sewage stations in villages and towns are unevenly distributed, the stations are far or near or far away from each other, the stations are far away from a command center, and unified management cannot be realized can be effectively solved.
According to the utility model discloses centralized sewage treatment facility can obtain beneficial effect and include at least:
(1) the centralized sewage treatment facility provided by the embodiment of the utility model can adopt A2The O (MBBR) -high-efficiency precipitation-self-activity deep denitrification filter tank process can realize the high-efficiency denitrification and dephosphorization function and can meet the higher-standard effluent requirement.
(2) The utility model discloses centralized sewage treatment facility impact load resistance ability reinforce, goes out water stable in quality of water, need not the external source and throws the carbon source.
(3) The utility model discloses centralized sewage treatment facility's from active degree of depth denitrogenation filtering pond 5 adopts many active ingredients of sulphur composite filter material as dephosphorization intensive type sulphur composite functional biological carrier, can reach the purpose of synchronous nitrogen and phosphorus removal, and total nitrogen clearance is high.
(4) The centralized sewage treatment facility provided by the embodiment of the utility model has wide application range, the total nitrogen content of inlet water is 20-200mg/L, and the facility is suitable for treating urban sewage and rural sewage with low carbon-nitrogen ratio so as to meet the requirement that the total nitrogen of outlet water reaches lower standard;
(5) the centralized sewage treatment facility provided by the embodiment of the utility model has the advantages of beautiful whole body, environment-friendly property and low noise;
features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A centralized sewage treatment facility is characterized by comprising an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an auto-activated deep denitrification filter tank and a clean water tank which are sequentially communicated according to the water flow direction;
the anaerobic tank is provided with a water inlet or a water inlet pipe, the bottom of the aerobic tank is provided with an aeration device, and biological fluidized bed filler is added into the aerobic tank;
an inclined pipe for capturing activated sludge is arranged at the middle upper part of the sedimentation tank, and the overflowing channels of the sedimentation tank and the self-activated deep denitrification filter are close to the upper layer of the inclined pipe;
the self-activated deep denitrification filter is provided with a composite filter material layer, a cobble layer and a filter brick layer from top to bottom, wherein the composite filter material layer is used for removing solid suspended matters through the interception effect and denitrifying sewage;
the clean water basin with pass through outer calandria and produce the water pump connection from active degree of depth denitrogenation filtering pond, outer calandria one end is connected to the below on the filter brick layer from active degree of depth denitrogenation filtering pond, the other end of outer calandria is connected to the clean water basin, it sets up to produce the water pump outer calandria is last.
2. The centralized wastewater treatment facility according to claim 1, further comprising a plant room, wherein an aeration fan is arranged in the plant room, the aeration fan is connected with the aeration device of the aerobic tank through a pipeline, and the aeration device comprises a plurality of uniformly arranged aeration discs.
3. The centralized wastewater treatment facility of claim 2, further comprising a first return pipe connected from the bottom of the aerobic tank to the bottom of the anoxic tank, wherein the first return pipe is provided with a mixed liquor return pump for pumping the mixed liquor of the aerobic tank to the anoxic tank.
4. The centralized wastewater treatment facility of claim 3, further comprising a second return pipe connected from the bottom of the sedimentation tank to the bottom of the anaerobic tank, wherein a sludge return pump is provided on the second return pipe for pumping the activated sludge of the sedimentation tank to the anaerobic tank.
5. The centralized sewage treatment facility according to claim 4, wherein the bottom of the anaerobic tank and the anoxic tank is provided with perforated pipes which are arranged according to a set mode, the perforated pipes are uniformly arranged at the bottom of the anaerobic tank and the anoxic tank, and through holes on the perforated pipes are uniformly arranged;
the perforated pipe of the anoxic tank is connected with the first return pipeline, and the perforated pipe of the anaerobic tank is connected with the second return pipeline.
6. The centralized wastewater treatment facility according to claim 4, wherein the mixed liquor recirculation pump is located at the bottom of the aerobic tank, the sludge recirculation pump is located at the bottom of the equipment room, and the sludge recirculation pump is also connected with a sludge discharge pipe for discharging excess sludge.
7. The centralized sewage treatment facility according to claim 2, wherein a water distribution device and an air distribution device are arranged at the bottom of the self-activated deep denitrification filter, a backwash pump and a backwash fan are arranged in the equipment room, the backwash pump is connected with the water distribution device through a pipeline, and the backwash fan is connected with the air distribution device through a pipeline.
8. The centralized wastewater treatment facility according to claim 2, wherein a dosing device is provided in the plant room, and the dosing device is connected to the sedimentation tank through a pipe for adding a phosphorus removal agent.
9. The centralized wastewater treatment facility of claim 1, wherein the composite filter material layer is arranged with a sulfur-based multi-active component composite filter material for simultaneous denitrification and dephosphorization.
10. The centralized wastewater treatment facility of claim 1, wherein the sloped tube in the settling tank is configured with a self-cleaning device for cleaning the sloped tube.
CN202120219348.5U 2021-01-26 2021-01-26 Centralized sewage treatment facility Active CN215049474U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114716109A (en) * 2022-04-21 2022-07-08 华南理工大学 Sewage nitrogen and phosphorus removal treatment system and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114716109A (en) * 2022-04-21 2022-07-08 华南理工大学 Sewage nitrogen and phosphorus removal treatment system and process

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