CN211814024U - Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage - Google Patents
Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage Download PDFInfo
- Publication number
- CN211814024U CN211814024U CN202020199850.XU CN202020199850U CN211814024U CN 211814024 U CN211814024 U CN 211814024U CN 202020199850 U CN202020199850 U CN 202020199850U CN 211814024 U CN211814024 U CN 211814024U
- Authority
- CN
- China
- Prior art keywords
- tank
- sludge
- communicated
- pipe
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a high-efficiency nitrogen and phosphorus removal device for low-carbon source domestic sewage, which comprises a grid well filter tank, an adjusting tank, an anaerobic reaction tank, an anoxic tank, an aerobic tank, a chemical reaction tank and a sedimentation tank which are sequentially communicated through pipelines; the anaerobic reaction tank comprises a tank body, and the bottom of the tank body is of a conical structure; a stirring shaft is arranged in the tank body, and a first stirrer and a second stirrer are fixedly arranged on the stirring shaft; an aeration device is arranged at the bottom of the aerobic tank; a sludge pump is arranged at a sludge outlet of the sedimentation tank, and a sludge return pipe and a sludge conveying pipe are communicated with the sludge pump; the sludge return pipe is communicated with the anoxic tank; the sludge conveying pipe is communicated with the sludge tank; the utility model can improve the utilization rate of carbon source, improve the decarbonization and dephosphorization effect of sewage, avoid water eutrophication and keep ecological balance; can avoid the need of external carbon source, reduce the cost of sewage treatment, save energy and have high social benefit.
Description
Technical Field
The utility model relates to a low carbon source domestic sewage's high-efficient nitrogen and phosphorus removal equipment belongs to sewage treatment device technical field.
Background
N, P, etc., are important factors in eutrophication of surface water in lakes, rivers, reservoirs, etc., and with the strength of water pollution treatment in China, the control of total nitrogen and total phosphorus in the effluent of sewage treatment plants is becoming stricter.
In the secondary biochemical treatment process of the sewage treatment plant, TN and TP removal capacity is closely related to a carbon source, generally, BOD/TN is more than 4, BOD/TP is more than 20, which is a basic condition for biological nitrogen and phosphorus removal, TN and TP indexes are difficult to discharge up to the standard no matter what secondary biochemical treatment process is adopted under the condition that the carbon source is deficient, particularly the condition that a high-quality carbon source (BOD) is deficient, and the carbon source, particularly the concentration of the high-quality carbon source, of inlet water of a secondary biochemical treatment system of the sewage treatment plant is a key element for controlling TN and TP of outlet water.
At present, the diet of residents in southern areas of China is light, the oil content in restaurant wastewater is very low, in addition, due to hot weather, the per capita water ration in southern areas is very large, the rainfall is large, the rain and sewage diversion is not completely realized, so that the phenomenon of low carbon source generally exists in domestic sewage, and in some areas, due to higher underground water level, the leakage of external water is serious, the COD value of the domestic sewage is even lower than the requirement of first-level A discharge standard, and nitrogen and phosphorus obviously exceed the standard, so that the domestic sewage becomes low-carbon-source high-nitrogen high-phosphorus sewage.
In the prior art, the sewage treatment equipment, especially the low-carbon source sewage treatment equipment, has the advantages of low carbon source utilization efficiency, poor decarbonization and dephosphorization effects, easy water eutrophication and ecological balance damage; on the other hand, the equipment structure is complex, and needs additional carbon source, the sewage treatment cost is high, and the social benefit is low.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a high-efficiency nitrogen and phosphorus removal device for low-carbon source domestic sewage, which can improve the utilization rate of a carbon source, improve the decarbonization and phosphorus removal effects of sewage, avoid eutrophication of a water body and keep ecological balance; can avoid the need of external carbon source, reduce the cost of sewage treatment, save energy and have high social benefit.
For solving the technical problem, the utility model discloses a following technical scheme: a high-efficiency nitrogen and phosphorus removal device for low-carbon source domestic sewage comprises a grid well filter tank, a regulating tank, an anaerobic reaction tank, an anoxic tank, an aerobic tank, a chemical reaction tank and a sedimentation tank which are sequentially communicated through pipelines; the anaerobic reaction tank comprises a tank body, and the bottom of the tank body is of a conical structure; a stirring shaft is arranged in the tank body, and a first stirrer and a second stirrer are fixedly arranged on the stirring shaft; the first stirrer comprises a stirring frame, and the stirring frame is a U-shaped plate; a transverse plate is arranged inside the stirring frame, and a plurality of through-flow holes are formed in the stirring frame and the transverse plate; the second stirrer is fixedly arranged at the bottom of the stirring frame;
an aeration device is arranged at the bottom of the aerobic tank, the aeration device comprises an aeration pump, and the aeration pump is communicated with an aeration pipe; the aeration pipe is laid at the bottom of the aerobic tank, a plurality of aeration nozzles are arranged on the aeration pipe, and the aeration nozzles are of hollow cone structures; a plurality of circular through holes are uniformly distributed on the conical surface of the aeration nozzle; the water outlet of the sedimentation tank is communicated with the disinfection tank; a sludge pump is arranged at a sludge outlet of the sedimentation tank, and a sludge return pipe and a sludge conveying pipe are communicated with the sludge pump; the sludge return pipe is communicated with the anoxic tank; the sludge conveying pipe is communicated with the sludge tank.
Further, the tank body fixes the anaerobic reaction tank on the top of the anoxic tank through supporting legs; a water outlet pipe is arranged at the center of the bottom of the tank body, and the other end of the water outlet pipe is communicated with the anoxic tank; and the water outlet pipe is provided with a switch valve.
Further, a stirrer is fixedly arranged in the anoxic tank; a first backflow pipe is arranged between the anoxic pond and the anaerobic reaction tank and communicated with a first backflow pump, and the first backflow pump is arranged in the anoxic pond.
Further, the second stirrer is of a T-shaped structure; the T-shaped edge of the second stirrer is parallel to the conical bottom wall of the tank body.
Further, a second return pipe is communicated between the aerobic tank and the anoxic tank, and the second return pipe is communicated with a second return pump; the second reflux pump is arranged in the aerobic tank.
Further, a first dosing device and a second dosing device are arranged on the chemical reaction tank, and the first dosing device is used for adding PAM into the tank; the second dosing device is used for adding PAC into the cell.
Further, the lower end of the stirring shaft is rotatably connected to a bearing seat; the bearing seat is of an inverted V-shaped structure; the bearing seat is fixedly arranged on the conical bottom wall of the tank body; the upper end of the stirring shaft is rotationally connected with the bottom wall of the tank body; the upper end of the stirring shaft is connected with a motor.
Furthermore, a plurality of through flow holes are uniformly arranged at intervals; the through-flow holes are any one of circular, square, diamond and polygonal.
Further, a lifting pump is arranged in the adjusting tank.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
the utility model can improve the utilization rate of carbon source, improve the decarbonization and dephosphorization effect of sewage, avoid water eutrophication and keep ecological balance; can avoid the need of external carbon source, reduce the cost of sewage treatment, save energy and have high social benefit.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, the position of the upper end of the main shaft,
1-a grid well filter tank, 2-a regulating tank, 21-a lift pump, 3-an anaerobic reaction tank, 31-a tank body, 32-a first stirrer, 321-a stirring frame, 322-a transverse plate, 323-a through hole, 33-a second stirrer, 34-a stirring shaft, 35-a motor, 36-a bearing seat, 37-a water outlet pipe, 38-a switch valve, 39-a supporting leg, a 4-an anoxic tank, 41-a stirrer, 42-a first reflux pump, 5-an aerobic tank, 51-an aeration pump, 52-an aeration pipe, 53-an aeration nozzle, 54-a filler, 55-a second reflux pump, 6-a chemical reaction tank, 61-a first dosing device, 62-a second dosing device, 7-a sedimentation tank, 71-a sludge pump and 8-a disinfection tank, 9-a sludge pool, 10-a first return pipe, 11-a second return pipe, 12-a sludge return pipe and 13-a sludge conveying pipe.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Embodiment 1 high-efficiency nitrogen and phosphorus removal equipment for low-carbon source domestic sewage
As shown in fig. 1, the utility model provides a high-efficiency nitrogen and phosphorus removal device for low-carbon source domestic sewage, which comprises a grid well filter tank 1, an adjusting tank 2, an anaerobic reaction tank 3, an anoxic tank 4, an aerobic tank 5, a chemical reaction tank 6 and a sedimentation tank 7 which are sequentially communicated through pipelines; the grid well filter 1 is used for discharging impurities such as suspended matters in the sewage.
A lifting pump 21 is arranged in the adjusting tank 2, and sewage is sent to the anaerobic reaction tank 3 through the lifting pump 21.
The anaerobic reaction tank 3 is used for carrying out anaerobic phosphorus release reaction on sewage; the anaerobic reaction tank 3 comprises a tank body 31, and the bottom of the tank body 31 is of a conical structure; a stirring shaft 34 is arranged in the tank body 31, and a first stirrer 32 and a second stirrer 33 are fixedly arranged on the stirring shaft 34; the first stirrer 32 comprises a stirring frame 321, and the stirring frame 321 is a U-shaped plate; a transverse plate 322 is arranged inside the stirring frame 321, and a plurality of through holes 323 are formed in the stirring frame 321 and the transverse plate 322; the through holes 323 are uniformly arranged at intervals; the through-flow holes 323 are any one of circular, square, diamond and polygonal, and the through-flow holes 323 can reduce stirring resistance and can also enable stirring to be more uniform.
The second stirrer 33 is fixedly arranged at the bottom of the stirring frame 321; the second stirrer 33 is of a T-shaped structure; the T-shaped edge of the second stirrer 33 is parallel to the conical bottom wall of the tank body 31; the second stirrer 33 can effectively stir the sewage at the bottom of the tank 31, so that dead angles of stirring are avoided.
The lower end of the stirring shaft 34 is rotatably connected to a bearing seat 36; the bearing seat 36 is of an inverted V-shaped structure; the bearing seat 36 is fixedly arranged on the conical bottom wall of the tank 31.
The upper end of the stirring shaft 34 is rotatably connected with the bottom wall of the tank body 31; the upper end of the stirring shaft 34 is connected with a motor 35, and the stirring shaft 34 is driven to rotate by the motor 35; the motor 35 is fixed to the top of the can 31.
A water outlet pipe 37 is arranged at the center of the bottom of the tank body 31, and a switch valve 38 is arranged on the water outlet pipe 37; the other end of the water outlet pipe 37 is communicated with the anoxic tank 4; the bottom of the tank body 31 is also provided with a support leg 39, and the anaerobic reaction tank 3 is fixed on the top of the anoxic tank 4 through the support leg 39.
The anoxic tank 4 is used for denitrification of sewage; a stirrer 41 is fixedly arranged in the anoxic pond 4, and the stirrer 41 is transversely arranged; a first backflow pipe 10 is arranged between the anoxic pond 4 and the anaerobic reaction tank 3, the first backflow pipe 10 is communicated with a first backflow pump 42, the first backflow pump 42 is arranged in the anoxic pond 4, and mixed liquor in the anoxic pond 4 flows back to the anaerobic reaction tank 3 through the first backflow pump 42 and the first backflow pipe 10 to carry out anaerobic phosphorus release reaction.
The aerobic tank 5 is used for aerobic phosphorus absorption, nitrification and organic matter oxidation of sewage; an aeration device is arranged at the bottom of the aerobic tank 5, the aeration device 5 comprises an aeration pump 51, and the aeration pump 51 is communicated with an aeration pipe 52; the aeration pipe 52 is laid at the bottom of the aerobic tank 5, a plurality of aeration nozzles 53 are arranged on the aeration pipe 52, and the aeration nozzles 53 are of hollow cone structures; a plurality of circular through holes are uniformly distributed on the conical surface of the aeration nozzle 53, and aeration is carried out in the tank through the circular through holes.
A second return pipe 11 is communicated between the aerobic tank 5 and the anoxic tank 4, and the second return pipe 11 is communicated with a second return pump 55; the second reflux pump 55 is arranged in the aerobic tank 5, and the nitrified liquid in the aerobic tank 5 flows back to the anoxic tank 4 through the second reflux pump 55 and the second reflux pipe 11 to perform denitrification.
A first dosing device 61 and a second dosing device 62 are arranged on the chemical reaction tank 6, and the first dosing device 61 is used for adding PAM into the tank; the second dosing device 62 is used to add PAC into the cell; PAC and PAM are added into the chemical reaction tank 6, so that the sewage after anaerobic-anoxic-aerobic treatment is subjected to flocculation precipitation reaction.
The water outlet of the sedimentation tank 7 is communicated with the disinfection tank 8; the disinfection tank 8 is used for disinfecting sewage so as to finish the treatment of the sewage; the disinfection tank 8 is provided with a water outlet 81, and water meeting the discharge standard is discharged through the water outlet 81.
A sludge pump 71 is arranged at a sludge outlet of the sedimentation tank 7, and a sludge return pipe 12 and a sludge conveying pipe 13 are communicated with the sludge pump 71; the sludge return pipe 12 is communicated with the anoxic tank 4, and conveys the sludge in the sedimentation tank 7 into the anoxic tank 4 to supplement a carbon source so as to ensure the denitrification.
The sludge conveying pipe 13 is communicated with the sludge tank 9, and the residual sludge is sent into the sludge tank to be collected.
The utility model discloses a theory of operation:
during treatment, firstly, sewage is primarily filtered in the grid well filter 1 to remove impurities such as suspended matters in the sewage, then the sewage is sent into the regulating tank 2 for regulation treatment, then the sewage is sent into the anaerobic reaction tank 3 through the lifting pump 21 for anaerobic phosphorus release, after the anaerobic treatment is finished, the switch valve 38 is opened, the sewage after the anaerobic reaction automatically flows into the anoxic tank 4, and is subjected to denitrification and denitrification together with the nitrified mixed liquid flowing back from the aerobic tank and the sludge flowing back from the sedimentation tank, and then the sewage is sent into the aerobic tank for aerobic phosphorus absorption, nitrification and organic matter oxidation; feeding the sewage subjected to anaerobic-anoxic-aerobic treatment into a chemical reaction tank 6, adding PAM and PAC into the chemical reaction tank 6 to enable the sewage to generate flocculation precipitation reaction, and feeding the sewage into a sedimentation tank for sedimentation after the flocculation reaction is finished to enable the sewage to be subjected to solid-liquid separation; the supernatant is sent into a disinfection tank through a water outlet to be subjected to final disinfection treatment, so that the discharge standard can be met; the precipitated sludge is sent back to the anoxic tank through a sludge pump 71 and a sludge return pipe 12, and the residual sludge is sent to the sludge tank 9 through a sludge conveying pipe 13 for collection.
The utility model can improve the utilization rate of carbon source, improve the decarbonization and dephosphorization effect of sewage, avoid water eutrophication and keep ecological balance; can avoid the need of external carbon source, reduce the cost of sewage treatment, save energy and have high social benefit.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (9)
1. The utility model provides a high-efficient nitrogen and phosphorus removal equipment of low carbon source domestic sewage which characterized in that: comprises a grid well filter tank (1), a regulating tank (2), an anaerobic reaction tank (3), an anoxic tank (4), an aerobic tank (5), a chemical reaction tank (6) and a sedimentation tank (7) which are sequentially communicated through pipelines; the anaerobic reaction tank (3) comprises a tank body (31), and the bottom of the tank body (31) is of a conical structure; a stirring shaft (34) is arranged in the tank body (31), and a first stirrer (32) and a second stirrer (33) are fixedly arranged on the stirring shaft (34); the first stirrer (32) comprises a stirring frame (321), and the stirring frame (321) is a U-shaped plate; a transverse plate (322) is arranged inside the stirring frame (321), and a plurality of through flow holes (323) are formed in the stirring frame (321) and the transverse plate (322); the second stirrer (33) is fixedly arranged at the bottom of the stirring frame (321);
an aeration device is arranged at the bottom of the aerobic tank (5), the aeration device comprises an aeration pump (51), and the aeration pump (51) is communicated with an aeration pipe (52); the aeration pipe (52) is laid at the bottom of the aerobic tank (5), a plurality of aeration nozzles (53) are arranged on the aeration pipe (52), and the aeration nozzles (53) are of a hollow cone structure; a plurality of circular through holes are uniformly distributed on the conical surface of the aeration nozzle (53); the water outlet of the sedimentation tank (7) is communicated with the disinfection tank (8); a sludge pump (71) is arranged at a sludge outlet of the sedimentation tank (7), and a sludge return pipe (12) and a sludge conveying pipe (13) are communicated with the sludge pump (71); the sludge return pipe (12) is communicated with the anoxic tank (4); the sludge conveying pipe (13) is communicated with the sludge tank (9).
2. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: the tank body (31) fixes the anaerobic reaction tank (3) on the top of the anoxic tank (4) through the supporting legs (39); a water outlet pipe (37) is arranged at the center of the bottom of the tank body (31), and the other end of the water outlet pipe (37) is communicated with the anoxic tank (4); and a switch valve (38) is arranged on the water outlet pipe (37).
3. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: a stirrer (41) is fixedly arranged in the anoxic tank (4); a first backflow pipe (10) is arranged between the anoxic pond (4) and the anaerobic reaction tank (3), the first backflow pipe (10) is communicated with a first backflow pump (42), and the first backflow pump (42) is arranged in the anoxic pond (4).
4. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: the second stirrer (33) is of a T-shaped structure; the T-shaped edge of the second stirrer (33) is parallel to the conical bottom wall of the tank body (31).
5. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: a second return pipe (11) is communicated between the aerobic tank (5) and the anoxic tank (4), and the second return pipe (11) is communicated with a second return pump (55); the second reflux pump (55) is arranged in the aerobic tank (5).
6. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: a first dosing device (61) and a second dosing device (62) are arranged on the chemical reaction tank (6), and the first dosing device (61) is used for adding PAM into the tank; the second dosing device (62) is used to add PAC into the cell.
7. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: the lower end of the stirring shaft (34) is rotatably connected to a bearing seat (36); the bearing seat (36) is of an inverted V-shaped structure; the bearing seat (36) is fixedly arranged on the conical bottom wall of the tank body (31); the upper end of the stirring shaft (34) is rotationally connected with the bottom wall of the tank body (31); the upper end of the stirring shaft (34) is connected with a motor (35).
8. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: a plurality of through flow holes (323) are uniformly arranged at intervals; the through flow hole (323) is any one of a circle, a square, a diamond and a polygon.
9. The efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage, as claimed in claim 1, is characterized in that: and a lifting pump (21) is arranged in the adjusting tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199850.XU CN211814024U (en) | 2020-02-24 | 2020-02-24 | Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199850.XU CN211814024U (en) | 2020-02-24 | 2020-02-24 | Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211814024U true CN211814024U (en) | 2020-10-30 |
Family
ID=72998454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020199850.XU Active CN211814024U (en) | 2020-02-24 | 2020-02-24 | Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211814024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671501A (en) * | 2020-12-24 | 2022-06-28 | 格林生态环境有限公司 | A precipitation equipment for sewage treatment |
-
2020
- 2020-02-24 CN CN202020199850.XU patent/CN211814024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671501A (en) * | 2020-12-24 | 2022-06-28 | 格林生态环境有限公司 | A precipitation equipment for sewage treatment |
| CN114671501B (en) * | 2020-12-24 | 2023-09-01 | 格林生态环境有限公司 | Sedimentation equipment for sewage treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020100706A4 (en) | A membrane bioreactor system for rural decentralized wastewater | |
| CN101786770B (en) | Oligodynamic moving bed sanitary sewage disposal system | |
| CN102381814A (en) | Integrated rural sewage treatment plant | |
| CN104150719A (en) | Country comprehensive sewage treatment system and country comprehensive sewage treatment method | |
| CN109095708B (en) | Sewage treatment equipment | |
| CN101691267B (en) | Air lift and return integrated sewage treatment device | |
| CN102120680B (en) | Anoxic/oxic-membrane bioreactor water treatment device and sewage treatment method thereof | |
| CN107827235A (en) | One kind is based on improvement A2The method of the processing domestic sewage in rural areas of O techniques | |
| CN205710300U (en) | A kind of sewage-treatment plant | |
| CN211814024U (en) | Efficient nitrogen and phosphorus removal equipment for low-carbon-source domestic sewage | |
| CN103570124A (en) | Method for waste water deep treatment through steam fluidized biological carrier membrane separation | |
| CN2616530Y (en) | Micro-power domestic sewage treatment integrating apparatus | |
| CN203781915U (en) | Nitrification and denitrification integrated rural domestic sewage treatment system | |
| CN101941774A (en) | Micro-power dispersion type domestic sewage treatment process | |
| CN101254979B (en) | Domestic sewage dispersant type anaerobic contact treatment technique | |
| CN201932989U (en) | Biochemistry combined reactor for sewage treatment | |
| CN201395543Y (en) | Aeration and sedimentation type sewage treatment system | |
| CN215712455U (en) | Sewage treatment system | |
| CN103693818B (en) | Coking wastewater biochemical treatment and sedimentation tank | |
| CN202610070U (en) | Integration sanitary sewage treatment device | |
| CN210176686U (en) | Integrated sewage and wastewater treatment tank | |
| CN209161763U (en) | A kind of stripping reflux formula integrated sewage water equipment | |
| CN211056898U (en) | MFBR sewage treatment plant | |
| CN211056798U (en) | Concentric sleeve type MFBR rural sewage treatment device | |
| CN202246338U (en) | Integrated device for treatment of village wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |