CN211367130U - Multipoint balanced distributed backflow sewage treatment device - Google Patents
Multipoint balanced distributed backflow sewage treatment device Download PDFInfo
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- CN211367130U CN211367130U CN201921097006.XU CN201921097006U CN211367130U CN 211367130 U CN211367130 U CN 211367130U CN 201921097006 U CN201921097006 U CN 201921097006U CN 211367130 U CN211367130 U CN 211367130U
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Abstract
The utility model relates to a multipoint balanced distributed type backflow sewage treatment device, which comprises an anaerobic zone (1), an anoxic zone (2), an aerobic zone (3), a settling zone (4), an aeration device (5) and a multipoint balanced backflow pipeline, and is characterized in that the anaerobic zone (1), the anoxic zone (2), the aerobic zone (3) and the settling zone (4) of the sewage treatment device are sequentially connected; the multipoint balance return pipeline consists of a return pipe (16) from an anoxic zone to an anaerobic zone, an internal return pipe (8) from the anoxic zone, a return pipe (10) from a water inlet end from an aerobic zone to the anoxic zone, an internal return pipe (7) from the aerobic zone and a sludge return pipe (9) from a water inlet end from a settling zone to the anoxic zone. The arrangement mode of the device can ensure that the high nutrient substrate sewage in the anaerobic zone (1) and the anoxic zone (2) is fully contacted with the backflow activated sludge, the number of beneficial flora is increased through the biological selection effect, the removal efficiency of pollutants is improved, the aeration quantity is reduced, and the energy consumption is saved.
Description
Technical Field
The utility model relates to a distributed backward flow sewage treatment plant of multiple spot equilibrium belongs to sewage treatment technical field.
Background
Based on differences of production and living modes, village and town sewage has the characteristics of relative dispersion, large fluctuation of water quality and water quantity and the like compared with urban sewage, and if the sewage cannot be effectively treated and discharged, eutrophication of a water body and black and odorous water body are easily caused. Meanwhile, the village and town sewage treatment rate is relatively low, and the key for improving the human living environment and protecting water resources is realized. From 'twelve five', the country pays more and more attention to rural water environment remediation, especially sewage treatment, and policy guidance and financial support are continuously increased. At present, the village and town sewage treatment mainly adopts anaerobic-anoxic-aerobic process, biological contact oxidation process, biofilm reactor (MBR) process, artificial wetland and the like. With the increasingly strict national and local requirements on the sewage discharge standard of villages and towns, the traditional treatment process has difficulty in meeting the requirements on high efficiency, stability, economic rationality and operation convenience.
Therefore, the sewage treatment efficiency is further improved, the process treatment effect is improved, the energy consumption is saved, and an improved sewage treatment system is provided, which is a problem to be solved urgently in distributed sewage treatment of villages and towns at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to improve sewage treatment efficiency, improve the uneven current situation of water distribution, nutrient substance and microorganism distribution in the system, reduce the aeration rate, practice thrift the energy consumption to a balanced distributed backward flow sewage treatment plant of multiple spot is provided.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a multipoint balanced distributed type backflow sewage treatment device comprises an anaerobic zone, an anoxic zone, an aerobic zone, a settling zone, an internal aeration device and a multipoint balanced backflow pipeline. Wastewater passes through the anaerobic zone, the anoxic zone, the aerobic zone and the precipitation zone in sequence. An aeration device is arranged in the aerobic zone.
The multipoint balanced return pipeline comprises a return pipe from an anoxic zone to an anaerobic zone, a return pipe inside the anoxic zone, a return pipe at a water inlet end from an aerobic zone to the anoxic zone, a return pipe inside the aerobic zone and a sludge return pipe at a water inlet end from a settling zone to the anoxic zone.
Furthermore, overflow holes are arranged on the upper side of the clapboard (or partition wall) from the anaerobic zone to the anoxic zone of the sewage treatment device.
Furthermore, overflow holes are arranged on the upper side of the partition board (or partition wall) from the anoxic zone to the aerobic zone of the sewage treatment device.
Further, the anaerobic zone, the anoxic zone, the aerobic zone and the precipitation zone of the sewage treatment device are respectively provided with a drain port, so that the sewage treatment device is convenient to drain.
Furthermore, a return pipe from the anoxic zone to the anaerobic zone in the multipoint balanced return pipeline extracts mixed liquid from the middle part of the anoxic zone and returns the mixed liquid to the water inlet end of the anoxic zone, and the return flow is 80-100% of the water inlet of the device.
Furthermore, a return pipe inside the anoxic zone in the multipoint balanced return pipeline extracts mixed liquid from the tail end of the anoxic zone and returns the mixed liquid to the water inlet end of the anoxic zone, and the return flow is 150-200% of the water inlet of the device.
Furthermore, a sludge return pipe from the bottom of the sedimentation zone to the water inlet end of the anoxic zone in the multipoint equalization return pipeline returns sludge to the water inlet end of the anoxic zone from the sedimentation zone, the return flow is 150% -200% of the water inlet of the device, and the purpose is to supplement sludge and maintain the concentration of the sludge in the device.
Furthermore, a sludge return pipe from the sedimentation zone to the anoxic zone water inlet end in the multipoint equalization return pipeline is provided with a return regulating valve.
Furthermore, the settling zone of the sewage treatment device is provided with a sludge discharge pipe, and a sludge discharge valve is arranged on the sludge discharge pipe.
Compared with the prior art, the utility model discloses a possess following beneficial effect:
the utility model provides a multipoint equilibrium distributed backflow sewage treatment device which can make the high nutrition substrate sewage in the anaerobic zone and the anoxic zone fully contact with the backflow activated sludge, and through the biological selection effect, the quantity of beneficial flora is increased, and the removal rate of organic pollutants, nitrogen and phosphorus is improved; meanwhile, the aeration quantity can be reduced, the energy consumption is saved, and the operation cost is reduced.
Drawings
FIG. 1 is a schematic view of the multipoint equilibrium distributed type backflow sewage treatment device of the present invention;
in the figure, 1-anaerobic zone, 2-anoxic zone, 3-aerobic zone, 4-sedimentation zone, 5-aeration device, 6-gas supply pipeline, 7-internal reflux pipe of aerobic zone, 8-internal reflux pipe of anoxic zone, 9-sedimentation zone to anoxic zone water inlet end sludge reflux pipe, 10-aerobic zone to anoxic zone water inlet end reflux pipe, 11-sludge discharge pipe, 12-sludge discharge valve, 13-reflux regulating valve, 14-water inlet pipe, 15-water outlet pipe, 16-anoxic zone to anaerobic zone reflux pipe
Detailed Description
In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
Fig. 1 is a schematic view of a multipoint equilibrium distributed backflow sewage treatment device provided by an embodiment of the present invention. As shown in fig. 1, the device comprises an anaerobic zone (1), an anoxic zone (2), an aerobic zone (3), a settling zone (4), an aeration device (5) and a multipoint equalization return pipeline, wherein the multipoint equalization return pipeline consists of an anoxic zone to anaerobic zone return pipe (16), an anoxic zone internal return pipe (8), an aerobic zone to anoxic zone water inlet end return pipe (10), an aerobic zone internal return pipe (7) and a settling zone to anoxic zone water inlet end sludge return pipe (9).
The anaerobic zone (1) and the anoxic zone (2) of the sewage treatment device are respectively provided with a partition plate, the anaerobic zone (1) and the anoxic zone (2) are divided into a plurality of reaction chambers which are connected in series, so that water flows up and down along the partition plates in a baffling manner, the sewage flow is increased, the short circuit is avoided, and meanwhile, the sewage treatment device can be fully mixed with sludge.
The anaerobic zone (1) to the anoxic zone (2) of the sewage treatment device are provided with overflow ports, so that water flow in the anaerobic zone (1) can conveniently flow into the anoxic zone (2).
The anoxic zone (1) to the aerobic zone (2) of the sewage treatment device are provided with overflow ports, so that water flow in the anoxic zone (2) can conveniently flow into the aerobic zone (3).
An aeration device (5) is arranged in the aerobic zone (3) of the sewage treatment device, so that oxygen is provided for decomposing organic pollutants by aerobic microorganisms, and the functions of stirring and mixing are achieved.
The anaerobic zone (1), the anoxic zone (2), the aerobic zone (3) and the sedimentation zone (4) of the sewage treatment device are respectively provided with a drain port, so that the sewage treatment device is convenient to maintain.
As shown in figure 1, sewage enters the left side of an anaerobic zone (1) of the sewage treatment device through a water inlet pipe (14), water flows flow in a baffling manner up and down along a partition plate, and overflows to an anoxic zone (2) from an overflow port on the upper side of the tail end of the anaerobic zone (1); the sewage flows in the anoxic zone (2) in a baffling way up and down along the partition plate and overflows to the aerobic zone (3) from an overflow port on the upper side of the tail end of the anoxic zone (2). And water outlet holes are formed in the middle of the partition wall of the aerobic zone (3) and the settling zone (4), the aerobic zone and the settling zone (4) are subjected to solid-liquid separation, and upper clear water flows out of an overflow weir of the settling zone (4) and is discharged out of the device system through a water outlet pipe (15). A sludge discharge pipe (11) at the bottom of the settling zone (4) discharges residual sludge regularly, and a sludge discharge valve (12) is arranged on the sludge discharge pipe (11).
As shown in figure 1, a return pipe (16) from an anoxic zone to an anaerobic zone in a multipoint equilibrium dispersion type return pipeline extracts mixed liquid from a position 0.5-1 meter above the bottom of a middle tank of the anoxic zone (2) and returns to a water inlet end of the anaerobic zone (1), wherein the return amount is 80-100% of the water inlet amount of the device, and the purpose is to increase the hydraulic flow rate to enable sludge in the anaerobic zone (1) to be in a suspension state; the mixed liquid is extracted from a position 0.5-1 meter above the bottom of the tank at the tail end of the anoxic zone (2) by a return pipe (8) in the anoxic zone and flows back to the water inlet end of the anoxic zone (2), and the return flow is 150-200% of the water inlet flow of the device; the reflux pipe from the bottom of the water inlet end of the aerobic zone (3) to the water inlet end of the anoxic zone (2) and the reflux pipe in the anoxic zone aim to improve the hydraulic condition of the anoxic zone, increase the denitrification effect and ensure that nutrient substances and microorganisms in the anoxic zone (2) are distributed more uniformly; the purpose of the internal reflux of the aerobic zone (3) is to avoid the sludge concentration gradient difference between the water inlet end and the water outlet end in the aerobic zone (3), so that the sludge loads of the water inlet end and the water outlet end tend to be consistent, the aeration rate is reduced, and the energy consumption is saved. A sludge return pipe (9) from the bottom of the settling zone (4) to the water inlet end of the anoxic zone (2) returns sludge from the bottom of the settling zone to the water inlet end of the anoxic zone, the return flow is 150% -200% of the water inlet flow of the device, the purpose is to strengthen endogenous respiration and self digestion of sludge, reduce the residual sludge yield of the system, improve hydraulic conditions and increase the number of dominant floras.
As shown in figure 1, a return pipe (16) from an anoxic zone to an anaerobic zone, an internal return pipe (8) from the anoxic zone, a return pipe (10) from an aerobic zone to a water inlet end of the anoxic zone, an internal return pipe (7) from the aerobic zone, and a sludge return pipe (9) from a settling zone to the water inlet end of the anoxic zone all adopt intermittent operation, the operation logics are that the return is 20-30 minutes, and the stop is 30-40 minutes. The internal aeration device (5) is also operated intermittently for 40-50 minutes and stopped for 40-50 minutes.
As shown in figure 1, a sludge return pipe (9) from a settling zone to an anoxic zone water inlet end in a multipoint equilibrium distributed return pipeline is provided with a return regulating valve (13), so that the sludge return flow can be conveniently adjusted according to the water inlet amount and the water quality.
As shown in figure 1, a return pipe (16) from an anoxic zone to an anaerobic zone, a return pipe (8) inside the anoxic zone, a return pipe (10) from an aerobic zone to a water inlet end of the anoxic zone, a return pipe (7) inside the aerobic zone, a sludge return pipe (9) from a settling zone to the water inlet end of the anoxic zone return mixed liquid and sludge all adopt a gas stripping mode, and a gas source is from a gas supply pipeline (6) of a blower.
As mentioned above, while the present invention has been shown and described with reference to the preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A multipoint balanced distributed type backflow sewage treatment device comprises an anaerobic zone (1), an anoxic zone (2), an aerobic zone (3), a settling zone (4), an aeration device (5) and a multipoint balanced backflow pipeline, and is characterized in that the anaerobic zone (1), the anoxic zone (2), the aerobic zone (3) and the settling zone (4) of the sewage treatment device are sequentially connected; the multipoint balance return pipeline consists of a return pipe (16) from an anoxic zone to an anaerobic zone, an internal return pipe (8) from the anoxic zone, a return pipe (10) from an aerobic zone to a water inlet end of the anoxic zone, an internal return pipe (7) from the aerobic zone and a sludge return pipe (9) from a settling zone to a water inlet end of the anoxic zone; a sludge return pipe (9) from the sedimentation zone to the anoxic zone is provided with a return regulating valve (13), and a sludge discharge pipe (11) and a water outlet pipe (15) are arranged in the sedimentation zone (4).
2. The sewage treatment plant with distributed multipoint equalization and recirculation as claimed in claim 1, wherein the return pipe from the anoxic zone to the anaerobic zone, the return pipe inside the anoxic zone, the return pipe from the aerobic zone to the water inlet end of the anoxic zone, the return pipe inside the aerobic zone, and the sludge return pipe from the settling zone to the water inlet end of the anoxic zone all operate intermittently, and return for 20-30 minutes, and stop for 30-40 minutes, and the aeration of the aeration device also operates intermittently, operates for 40-50 minutes, and stops for 40-50 minutes.
3. The sewage treatment plant of claim 1 wherein the return pipe from the anoxic zone to the anaerobic zone draws the mixed liquor from the middle of the anoxic zone and returns the mixed liquor to the water inlet end of the anaerobic zone, the return flow being 80-100% of the water inlet of the sewage treatment plant.
4. The sewage treatment plant of claim 1 wherein the internal reflux pipe of the anoxic zone draws the mixed liquor from the end of the anoxic zone and reflux the mixed liquor to the water inlet end of the anoxic zone, the reflux amount being 150-200% of the water inlet amount of the sewage treatment plant.
5. The sewage treatment plant of claim 1 wherein the return conduit from the aerobic zone to the anoxic zone from the inlet to the inlet of the aerobic zone draws the mixed liquor back to the inlet of the anoxic zone.
6. The sewage treatment plant of claim 1, wherein the return flow rate of the sludge from the sedimentation zone to the anoxic zone is 150-200% of the water inlet.
7. The sewage treatment plant of claim 1, wherein the anaerobic zone (1), the anoxic zone (2), the aerobic zone (3) and the sedimentation zone (4) are provided with evacuation ports respectively.
8. The sewage treatment device with the multipoint balanced and distributed return functions as claimed in claim 1, wherein the return pipe (16) from the anoxic zone to the anaerobic zone, the return pipe (8) inside the anoxic zone, the return pipe (10) from the aerobic zone to the anoxic zone, the return pipe (7) inside the aerobic zone, the return pipe (9) from the sedimentation zone to the anoxic zone, and the mixed liquid or sludge in the sludge discharge pipe (11) arranged in the sedimentation zone are all returned or discharged in an air stripping manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921097006.XU CN211367130U (en) | 2019-07-15 | 2019-07-15 | Multipoint balanced distributed backflow sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921097006.XU CN211367130U (en) | 2019-07-15 | 2019-07-15 | Multipoint balanced distributed backflow sewage treatment device |
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| CN211367130U true CN211367130U (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024016714A1 (en) * | 2022-07-19 | 2024-01-25 | 东南大学 | Small-size multistage baffling a2/o apparatus and process for treating domestic sewage on plateau |
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- 2019-07-15 CN CN201921097006.XU patent/CN211367130U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024016714A1 (en) * | 2022-07-19 | 2024-01-25 | 东南大学 | Small-size multistage baffling a2/o apparatus and process for treating domestic sewage on plateau |
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Address after: 100085 6th floor, Block E, Jinyu Jiahua building, Shangdi 3rd Street, Haidian District, Beijing Patentee after: CECEP LiuHe Talroad Environmental Technology Co.,Ltd. Address before: 100085 6th floor, Block E, Jinyu Jiahua building, Shangdi 3rd Street, Haidian District, Beijing Patentee before: CECEP L&T ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230907 Address after: 101-323, 1st Floor, Building 2, Yard 2, Jinsheng Street, Daxing District, Beijing 102600 Patentee after: Beijing Fusion Environmental Protection Co.,Ltd. Address before: 100085 6th floor, Block E, Jinyu Jiahua building, Shangdi 3rd Street, Haidian District, Beijing Patentee before: CECEP LiuHe Talroad Environmental Technology Co.,Ltd. |
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Addressee: Zhang Wenting Document name: Notification of Qualified Procedures |