CN214611772U - Six-section type biological sedimentation tank - Google Patents
Six-section type biological sedimentation tank Download PDFInfo
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- CN214611772U CN214611772U CN202120222660.XU CN202120222660U CN214611772U CN 214611772 U CN214611772 U CN 214611772U CN 202120222660 U CN202120222660 U CN 202120222660U CN 214611772 U CN214611772 U CN 214611772U
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Abstract
The utility model discloses a six segmentation biological sedimentation tanks belongs to sewage treatment technical field. Six segmentation biological sedimentation ponds include first transverse partition wall, first transverse partition wall will six segmentation biological sedimentation ponds divide into two regions of complete symmetry from top to bottom, first half regional left side is equipped with aerobic zone, and first half regional right side is equipped with two heavy ponds, and last half regional centre is from up being equipped with anoxic zone, anaerobic zone, preliminary anaerobic zone, back anoxic zone and back aerobic zone down. The utility model has reasonable structure and each function division area, simple and reasonable partition wall arrangement, smooth water flow circulation inside the pool body, simplified flow, compact arrangement, land saving and cost saving; a carbon source is added into the back anoxic zone, so that total nitrogen pollutants can be further removed, and the total nitrogen removal effect of the whole system is enhanced; the rear aerobic zone is provided with an aeration pipe for aeration so as to ensure that the sludge enters the secondary sedimentation tank in an aerobic state, prevent the sludge from releasing phosphorus in the secondary sedimentation tank and improve the efficiency of separating mud from water in the secondary sedimentation tank.
Description
Technical Field
The utility model relates to a six segmentation biological sedimentation tanks belongs to sewage treatment technical field.
Background
In the existing sewage treatment process flow, an AAO (anaerobic-anoxic-aerobic) process is a main flow process for nitrogen and phosphorus removal, and the core of a biological treatment unit of the process is an AAO biological tank and a secondary sedimentation tank. However, the denitrification efficiency of the AAO process is limited, and the degradation efficiency of TN (total nitrogen) is difficult to meet the increasingly strict effluent quality standard. In addition, the traditional AAO process design dispersedly arranges the main functional areas such as a biological reaction area, a sludge settling area, a sludge reflux area, a water outlet lifting area and the like, and has the problems of various structures, long construction period and large land resource occupation.
SUMMERY OF THE UTILITY MODEL
[ problem ] to
The utility model discloses the problem that solves is: the existing AAO process has limited denitrification efficiency, various internal structures, long construction period and large occupation of land resources.
[ solution ]
The utility model provides a six segmentation biological sedimentation tanks is applicable to the AAO technology in the sewage department technology, and this sedimentation tank can improve TN's clearance, through reasonable subregion, intensive construction improves land use efficiency and sewage biological treatment's effect.
Six segmentation biological sedimentation ponds include first transverse partition wall, first transverse partition wall will six segmentation biological sedimentation ponds divide into two regions of complete symmetry from top to bottom, first half regional left side is equipped with aerobic zone, and first half regional right side is equipped with two heavy ponds, and last half regional centre is from up being equipped with anoxic zone, anaerobic zone, pre-anoxic zone, back anoxic zone and back aerobic zone down.
In an embodiment of the utility model, a flow pushing device, an aeration pipe and a flow guiding wall are arranged in the aerobic zone, the flow guiding wall and the flow pushing device are arranged in the anoxic zone, and the aeration pipe is arranged in the back aerobic zone.
The utility model discloses an in the embodiment, be equipped with vertical partition wall between aerobic zone and the anoxic zone, be equipped with the horizontal partition wall of second between anoxic zone and the anaerobic zone.
The utility model discloses an in an embodiment, first transverse partition wall left end inlet tube department intercommunication has the inlet channel, the inlet channel is arranged in proper order on first transverse partition wall, vertical partition wall and the transverse partition wall of second.
In an embodiment of the present invention, a nitrifying liquid reflux pump is disposed on the vertical partition wall.
The utility model discloses an in the embodiment, be equipped with two heavy pond intake areas and dross district between the good oxygen district of back and two heavy ponds, be equipped with the mud district between anoxic zone and the two heavy ponds, two heavy pond right side below is equipped with out water and promotes the district.
The utility model discloses an in the embodiment, two sludge pipes have been buried underground to two heavy tank bottoms portion, and a sludge pipe and mud district intercommunication, another sludge pipe and play water lifting area intercommunication.
In an embodiment of the present invention, a sludge reflux pump and an excess sludge pump are disposed in the sludge zone.
The utility model discloses an in the embodiment, through mud back flow intercommunication between mud backwash pump and the anoxic zone in advance, excess sludge pump exit is connected with the excess sludge pipe.
The utility model discloses an in an embodiment, the excess sludge pipe stretch out to outside the six segmentation biological sedimentation tanks, be provided with out the water elevator pump in going out the water lifting zone, go out water elevator pump and outlet pipe intercommunication.
[ advantageous effects ]
1. The six-section type biological sedimentation tank has compact structural arrangement, reasonable functional division, simple and reasonable partition wall arrangement and smooth water flow circulation in the tank body; the sedimentation tank and the biological tank are constructed in a common wall manner, and a secondary sedimentation tank water inlet area, a scum area, a sludge backflow area and a water outlet lifting area are constructed in the included angle area, so that the flow is simplified, the land is saved, and the manufacturing cost is saved.
2. The pre-anoxic zone of the utility model can eliminate the dissolved oxygen in the inlet water and the dissolved oxygen in the return sludge, thereby ensuring that the dissolved oxygen in the anaerobic zone is not too high and ensuring the good living environment of microorganisms in the anaerobic zone; the anoxic zone and the aerobic zone are designed in a circulating flow pool type, and pollutants actually complete about 40-100 times of circulation in the pool, so that the impact resistance and the pollutant removal capacity of the system are improved.
3. The utility model is provided with the back anoxic zone and the back aerobic zone, and the carbon source is added in the back anoxic zone, so that the pollutants of the total nitrogen can be further removed, and the total nitrogen removal effect of the whole system is enhanced; the rear aerobic zone is provided with an aeration pipe for aeration so as to ensure that the sludge enters the secondary sedimentation tank in an aerobic state, prevent the sludge from releasing phosphorus in the secondary sedimentation tank and improve the efficiency of separating mud from water in the secondary sedimentation tank.
4. The utility model discloses an optimal configuration combination of each unit makes the backward flow point setting of nitrifying liquid at the back end in good oxygen district, flows back to anoxic zone front end after wearing the wall, and the pond of each functional area of make full use of holds, sets up good pond type and hydraulic condition for denitrification denitrogenation to set up three water inlet point with the cell body, divide into for anoxic zone in advance, anaerobic zone and good oxygen district, but the high-quality carbon source of make full use of into.
Drawings
Fig. 1 is a schematic view of the overlooking structure of the six-section biological sedimentation tank of the present invention.
FIG. 2 is a schematic structural diagram of the upper half area of a six-section type biological sedimentation tank which is completely symmetrical from top to bottom.
In the figure, 1, a pre-anoxic zone; 2. an anaerobic zone; 3. an anoxic zone; 4. an aerobic zone; 5. a post-anoxic zone; 6. a rear aerobic zone; 7. a water inlet area of the secondary sedimentation tank; 8. a scum zone; 9. a secondary sedimentation tank; 10. a sludge zone; 11. a water outlet lifting area; 12. a flow impeller; 13. a first transverse partition wall; 14. a longitudinal partition wall; 15. a second transverse partition wall; 16. an aeration pipe; 17. a water inlet channel; 18. A sludge pipe; 19. a sludge reflux pump; 20. a residual sludge pump; 21. a water outlet lift pump; 22. a nitrifying liquid reflux pump; 23. A residual sludge pipe; 24. a guide wall; 25. a sludge return pipe.
Detailed Description
To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.
Example 1
Six segmentation biological sedimentation ponds, as shown in fig. 1, including first transverse partition wall 13, first transverse partition wall 13 divide into two regions of upper and lower complete symmetry with the sedimentation tank, as shown in fig. 2, first half regional the left side is equipped with aerobic zone 4, and first half regional the right is equipped with two heavy ponds 9, and first half regional centre is from up being equipped with anoxic zone 3, anaerobic zone 2, pre-anoxic zone 1, back anoxic zone 5 and back aerobic zone 6 down.
The aerobic zone 4 is internally provided with a plurality of flow pushers 12, aeration pipes 16 and guide walls 24, the aeration pipes 16 perform aeration to fully mix sludge at the bottom of the aerobic zone 4 with water, and the flow pushers 12 can push mixed sewage to move along the guide walls 24 to form a circulating flow. Stirrers are arranged in the pre-anoxic zone 1, the anaerobic zone 2 and the post-anoxic zone 5, and water in the stirrers forms a completely mixed flowing state. A guide wall 24 and a flow pushing device 12 are arranged in the anoxic zone 3. A plurality of aeration pipes 16 are arranged in the rear aerobic zone 6, and the aeration pipes 16 carry out aeration to ensure that the sludge enters the secondary sedimentation tank 9 in an aerobic state, prevent the sludge from releasing phosphorus in the secondary sedimentation tank 9 and increase the effectiveness of sludge-water separation in the secondary sedimentation tank 9.
Be equipped with longitudinal partition 14 between aerobic zone 4 and anoxic zone 3, be equipped with second transverse partition 15 between anoxic zone 3 and the anaerobic zone 2, first transverse partition 13 left end inlet tube department intercommunication has inlet channel 17, inlet channel 17 arranges in proper order on first transverse partition 13, longitudinal partition 14 and second transverse partition 15, be equipped with on the longitudinal partition 14 and nitrify liquid backwash pump 22, nitrify liquid backwash pump 22 and carry the muddy water mixed liquid in the aerobic zone 4 to in the anoxic zone 3.
The pre-anoxic zone 1, the anaerobic zone 2, the anoxic zone 3, the aerobic zone 4, the back anoxic zone 5, the back aerobic zone 6, the secondary sedimentation tank water inlet zone 7 and the secondary sedimentation tank 9 are communicated through water through holes. A secondary sedimentation tank water inlet area 7 and a scum area 8 are arranged between the rear aerobic area 6 and the secondary sedimentation tank 9, and a sludge area 10 is arranged between the anoxic area 3 and the secondary sedimentation tank 9; and a water outlet lifting area 11 is arranged at the right lower part of the secondary sedimentation tank 9. Two sludge pipes 18 are buried at the bottom of the secondary sedimentation tank 9, one sludge pipe 18 is communicated with the sludge zone 10, and the other sludge pipe 18 is communicated with the water outlet lifting zone 11. A sludge return pump 19 and a residual sludge pump 20 are arranged in the sludge zone 10, the sludge return pump 19 is communicated with the pre-anoxic zone 1 through a sludge return pipe 25, a residual sludge pipe 23 is connected to the outlet of the residual sludge pump 20, and the residual sludge pipe 23 extends to a peripheral sludge storage pool. And a water outlet lifting pump 21 is arranged in the water outlet lifting area 11, and the water outlet lifting pump 21 is communicated with a water outlet pipe to discharge sewage in the water outlet lifting area 11.
The utility model discloses the working process: the sewage enters the six-section type biological sedimentation tank from a water inlet pipe, flows rightwards along a water inlet channel 17 on a first transverse partition wall 13, is divided into an upper path and a lower path through the water inlet channel 17 on a longitudinal partition wall 14, then flows rightwards through the water inlet channel 17 on a second transverse partition wall 15 to the pre-anoxic zones 1 of the upper area and the lower area of the six-section type sedimentation tank, the sewage in the pre-anoxic zones 1 is pumped into the sludge zone 10 by a sludge reflux pump 19 and a sludge reflux pipe 25, and then the sewage in the sludge zone 10 is discharged into a sludge storage tank on the periphery of the six-section type biological sedimentation tank by an excess sludge pump 20 and an excess sludge pipe 23.
The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Six segmentation biological sedimentation ponds, its characterized in that, including first transverse partition wall (13), first transverse partition wall (13) will six segmentation biological sedimentation ponds are divided into two regions of upper and lower complete symmetry, first half regional left side is equipped with aerobic zone (4), and first half regional right side is equipped with two heavy ponds (9), and first half regional centre is from up being equipped with anoxic zone (3), anaerobic zone (2), anaerobism district (1), back anoxic zone (5) and back aerobic zone (6) down.
2. The six-stage biological sedimentation tank according to claim 1, wherein a flow impeller (12), an aerator pipe (16) and a flow guide wall (24) are arranged in the aerobic zone (4), the flow guide wall (24) and the flow impeller (12) are arranged in the anoxic zone (3), and the aerator pipe (16) is arranged in the post-aerobic zone (6).
3. A six-stage bioprecipitation pond according to claim 1, wherein a longitudinal partition wall (14) is provided between the aerobic zone (4) and the anoxic zone (3), and a second transverse partition wall (15) is provided between the anoxic zone (3) and the anaerobic zone (2).
4. A six-section type biological precipitation pond according to claim 3, wherein the left end water inlet pipe of the first transverse partition wall (13) is communicated with a water inlet channel (17), and the water inlet channel (17) is sequentially arranged on the first transverse partition wall (13), the longitudinal partition wall (14) and the second transverse partition wall (15).
5. The six-stage biological sedimentation tank according to claim 4, wherein a nitrifying liquid reflux pump (22) is provided on the longitudinal partition wall (14).
6. The six-section type biological sedimentation tank of claim 5, wherein a secondary sedimentation tank water inlet area (7) and a scum area (8) are arranged between the rear aerobic area (6) and the secondary sedimentation tank (9), a sludge area (10) is arranged between the anoxic area (3) and the secondary sedimentation tank (9), and a water outlet lifting area (11) is arranged at the lower right of the secondary sedimentation tank (9).
7. The six-section type biological sedimentation tank as claimed in claim 6, wherein two sludge pipes (18) are buried at the bottom of the secondary sedimentation tank (9), one sludge pipe (18) is communicated with the sludge zone (10), and the other sludge pipe (18) is communicated with the effluent lifting zone (11).
8. The six-stage bioprecipitation tank of claim 7, wherein a sludge return pump (19) and a residual sludge pump (20) are provided in the sludge zone (10).
9. The six-section biological sedimentation tank of claim 8, wherein the sludge return pump (19) is communicated with the pre-anoxic zone (1) through a sludge return pipe (25), and an excess sludge pipe (23) is connected to the outlet of the excess sludge pump (20).
10. The six-stage biological sedimentation tank of claim 9, wherein the excess sludge pipe (23) extends out of the six-stage biological sedimentation tank, a water outlet lift pump (21) is arranged in the water outlet lift zone (11), and the water outlet lift pump (21) is communicated with a water outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222660.XU CN214611772U (en) | 2021-01-26 | 2021-01-26 | Six-section type biological sedimentation tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120222660.XU CN214611772U (en) | 2021-01-26 | 2021-01-26 | Six-section type biological sedimentation tank |
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| CN214611772U true CN214611772U (en) | 2021-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178968A1 (en) * | 2022-06-27 | 2023-09-28 | 中建三局绿色产业投资有限公司 | Biological treatment and sludge-water separation apparatus suitable for underground sewage plant |
-
2021
- 2021-01-26 CN CN202120222660.XU patent/CN214611772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178968A1 (en) * | 2022-06-27 | 2023-09-28 | 中建三局绿色产业投资有限公司 | Biological treatment and sludge-water separation apparatus suitable for underground sewage plant |
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Address after: 901-2, yinxiu Road, Wuxi, Jiangsu 214100 Patentee after: Huaxin Design Group Co.,Ltd. Address before: 214000 901-2, yinxiu Road, Binhu District, Wuxi City, Jiangsu Province Patentee before: WUXI MUNICIPAL DESIGN INSTITUTE Co.,Ltd. |
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