CN219194742U - Low-energy-consumption sewage treatment system - Google Patents
Low-energy-consumption sewage treatment system Download PDFInfo
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- CN219194742U CN219194742U CN202223572671.4U CN202223572671U CN219194742U CN 219194742 U CN219194742 U CN 219194742U CN 202223572671 U CN202223572671 U CN 202223572671U CN 219194742 U CN219194742 U CN 219194742U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to a sewage treatment system with low energy consumption, which comprises a water collecting tank, a solid-liquid separation system, a dosing sedimentation tank, a UASB anaerobic tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a secondary biochemical sedimentation tank, a strong oxidation tank, a dosing final sedimentation tank and a clean water tank which are sequentially communicated, wherein a first advection sedimentation tank and a first stripping tank are arranged between the primary aerobic tank and the primary anoxic tank, the primary aerobic tank, the first advection sedimentation tank, the first stripping tank and the primary anoxic tank are sequentially communicated through a first mixed liquid return pipeline, a second advection sedimentation tank and a second stripping tank are arranged between the secondary aerobic tank and the secondary anoxic tank, the secondary aerobic tank, the second stripping tank and the secondary anoxic tank are sequentially communicated through a second mixed liquid return pipeline, and a submersible stirring machine, an aeration disc and biological filler are arranged in the primary aerobic tank and the secondary aerobic tank; the total nitrogen reflux quantity is large, the energy consumption is low, and a carbon source is not required to be added.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system with low energy consumption.
Background
The fecal sewage of the untreated farms contains a large amount of pollutants, wherein COD (chemical oxygen demand), ammonia nitrogen and total phosphorus are high in concentration and become high-concentration organic pollution sources, and after the fecal sewage is discharged into rivers and lakes, the water quality is deteriorated, so that sensitive aquatic organisms die. The waste water of the manure residue with too much phosphorus flows into the river channel and the pond to enrich and differentiate the water body.
However, the traditional two-stage AO treatment process has small total nitrogen reflux quantity, and a large amount of carbon sources can be added to increase energy consumption in order to reach the standard of total nitrogen in effluent.
Disclosure of Invention
The utility model aims to design a sewage treatment system with low energy consumption, so that the problems in the background technology can be solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a sewage treatment system of low energy consumption, includes catch basin, solid-liquid separation system, dosing sedimentation tank, UASB anaerobic jar, one-level anoxic tank, one-level good oxygen pond, second grade anoxic tank, second grade good oxygen pond, second grade biochemical sedimentation tank, strong oxidation pond, dosing final sedimentation tank and clean water basin that communicate in proper order, one-level good oxygen pond with be equipped with first advection sedimentation tank and first air stripping pond between the one-level anoxic tank, one-level good oxygen pond first advection sedimentation tank first air stripping pond with one-level anoxic tank communicates in proper order through first mixed solution return line, second advection sedimentation tank and second air stripping pond are equipped with between the second anoxic tank, second advection sedimentation tank second air stripping pond with second anoxic tank communicates in proper order through second mixed solution return line, one-level good oxygen pond with all install the dive mixer in the second aerobic tank, and all be equipped with air-blower, aeration dish and biological.
Further, a first lime adding pipeline and a first PAM adding pipeline are arranged in the dosing sedimentation tank.
Further, a second lime adding pipeline, a second PAM adding pipeline and a PAC adding pipeline are arranged in the dosing final sedimentation tank.
Further, a mixed liquid reflux pump is arranged in the UASB anaerobic tank.
Further, a disinfection tank is arranged between the dosing final sedimentation tank and the clean water tank.
Further, a sludge pump is arranged in the secondary biochemical sedimentation tank and the chemical adding final sedimentation tank.
Further, a sludge return pipeline is arranged between the secondary biochemical sedimentation tank and the primary anoxic tank.
Further, a ferrous sulfate adding pipeline and a hydrogen peroxide adding pipeline are arranged in the strong oxidation pond.
Further, a grid is arranged at the water inlet of the water collecting tank, and a plug flow stirrer is arranged in the water collecting tank.
The beneficial effects of the utility model are as follows:
the mixed liquor in the first-stage aerobic tank sequentially passes through a first advection sedimentation tank and a first stripping tank and then flows back to the first-stage anoxic tank, the mixed liquor in the second-stage aerobic tank sequentially passes through a second advection sedimentation tank and a second stripping tank and then flows back to the second-stage anoxic tank, and the large-flow backflow of the total nitrogen mixed liquor in the first-stage aerobic tank and the second-stage aerobic tank is realized by using the stripping principle;
the method can pertinently culture high-efficiency sewage treatment microorganisms under different concentration environments, is matched with a first-stage aerobic tank and a second-stage aerobic tank to be internally provided with a blower, an aeration disc and biological fillers, performs blast aeration on sewage, removes COD in the sewage, converts ammonia nitrogen in the sewage into nitrate nitrogen, and has the obvious advantages of higher sewage treatment efficiency, especially total nitrogen treatment index, low energy consumption, no need of adding carbon sources and the like compared with the traditional second-stage AO treatment process.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the system of the present utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
As shown in figure 1, the sewage treatment system with low energy consumption comprises a water collecting tank, a solid-liquid separation system, a dosing sedimentation tank, a UASB anaerobic tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a secondary biochemical sedimentation tank, a strong oxidation tank, a dosing final sedimentation tank, a disinfection tank and a clean water tank which are sequentially communicated, wherein the water collecting tank is used for collecting sewage, a water inlet of the water collecting tank is provided with a grating, garbage with larger volume is isolated, a pump in the water collecting tank is prevented from being blocked, and a plug flow stirrer is arranged in the water collecting tank and is used for homogenizing water quality and preventing fecal residue in the sewage from being precipitated; the solid-liquid separation system comprises a solid-liquid separator, is used for separating solid manure from sewage, and discharges the filtered sewage into a dosing sedimentation tank; the dosing sedimentation tank is provided with a first lime adding pipeline and a first PAM adding pipeline, lime and PAM are added into the dosing sedimentation tank for coagulation, flocculation and sedimentation, so that the effects of dephosphorization and further removal of solid pollutants are achieved, and supernatant in the dosing sedimentation tank is pumped into a UASB anaerobic tank by a pump;
a mixed liquid reflux pump is arranged in the UASB anaerobic tank to ensure that sewage and anaerobic sludge are fully mixed and contacted, so as to decompose macromolecular organic matters and remove COD in the sewage in a large amount; a first advection sedimentation tank and a first stripping tank are arranged between the first-stage aerobic tank and the first-stage anoxic tank, the first-stage aerobic tank, the first advection sedimentation tank, the first stripping tank and the first-stage anoxic tank are sequentially communicated through a first mixed liquid return pipeline, mixed liquid in the first-stage aerobic tank sequentially passes through the first advection sedimentation tank and the first stripping tank and then flows back to the first-stage anoxic tank, a second advection sedimentation tank and a second stripping tank are arranged between the second-stage aerobic tank and the second-stage anoxic tank, the second-stage aerobic tank, the second advection sedimentation tank, the second stripping tank and the second-stage anoxic tank are sequentially communicated through a second mixed liquid return pipeline, mixed liquid in the second-stage aerobic tank sequentially passes through the second advection sedimentation tank and the second stripping tank and then flows back to the second-stage anoxic tank, and the large-flow backflow of total nitrogen mixed liquid in the first-stage aerobic tank and the second-stage aerobic tank is realized by the gas stripping principle; the primary aerobic tank and the secondary aerobic tank are internally provided with a submerged stirrer for pushing the activated sludge and the sewage to be fully mixed, and are provided with a blower, an aeration disc and biological fillers, so that the sewage is subjected to blast aeration to remove COD in the sewage, and ammonia nitrogen in the sewage is converted into nitrate nitrogen;
a sludge return pipeline is arranged between the secondary biochemical sedimentation tank and the primary anoxic tank, a sludge pump is arranged in the secondary biochemical sedimentation tank, activated sludge in the secondary biochemical sedimentation tank is precipitated and then flows back to the primary anoxic tank through the sludge pump by the sludge return pipeline, and residual sludge is discharged to an external sludge tank by the sludge pump; a ferrous sulfate adding pipeline and a hydrogen peroxide adding pipeline are arranged in the strong oxidation tank, ferrous sulfate and hydrogen peroxide are added into the strong oxidation tank, free hydroxyl with strong oxidability is generated, and COD in water is greatly reduced; the dosing final sedimentation tank is provided with a second lime adding pipeline, a second PAM adding pipeline, a PAC adding pipeline and a sludge pump, lime, PAC and PAM can be added for coagulation, flocculation and sedimentation, so that the effects of dephosphorization and suspended matter removal are achieved, and sludge is discharged to an external sludge tank through the sludge pump; sodium hypochlorite is added into the disinfection tank to further sterilize and decolor.
Working principle:
as shown in figure 1, the manure and sewage of the farm is discharged into a water collecting tank, then the sewage in the water collecting tank is pumped into a solid-liquid separator in a solid-liquid separation system through a pump to separate solid manure from sewage, the filtered sewage is discharged into a dosing sedimentation tank, lime and PAM are added into the dosing sedimentation tank for coagulation and flocculation sedimentation, the effect of removing phosphorus and further removing solid pollutants is achieved, supernatant in the dosing sedimentation tank is pumped into a UASB anaerobic tank through a pump, the sewage and anaerobic sludge are fully mixed and contacted through a mixed liquid reflux pump in the UASB anaerobic tank, macromolecular organic matters are decomposed, COD in the sewage is removed greatly, then the sewage sequentially flows through a primary anoxic tank, a secondary oxic tank and a secondary biochemical sedimentation tank, mixed liquid in the primary oxic tank sequentially flows through a first advection sedimentation tank and a first air stripping tank through a first mixed liquid reflux pipeline, then the mixed liquor in the second-stage aerobic tank flows back to the first-stage anoxic tank through a second mixed liquor return pipeline, sequentially passes through a second advection sedimentation tank and a second stripping tank, then flows back to the second-stage anoxic tank, the activated sludge in the second-stage biochemical sedimentation tank flows back to the first-stage anoxic tank through a sludge return pipeline after being settled, the residual sludge is discharged to an external sludge tank through a sludge pump, the supernatant in the second-stage biochemical sedimentation tank flows to a strong oxidation tank automatically, ferrous sulfate and hydrogen peroxide are added into the strong oxidation tank, COD in water is greatly reduced, the sewage in the strong oxidation tank flows to a chemical adding final sedimentation tank automatically, lime, PAC and PAM are added into the chemical adding final sedimentation tank for coagulation flocculation sedimentation, the effects of dephosphorization and suspended matter removal are achieved, the sludge is discharged to the external sludge tank through a sludge pump, the supernatant in the chemical adding final sedimentation tank flows to a disinfection tank automatically, adding sodium hypochlorite into the disinfection tank, and finally discharging water from the clean water tank.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (9)
1. The utility model provides a sewage treatment system of low energy consumption, its characterized in that, including catch basin, solid-liquid separation system, dosing sedimentation tank, UASB anaerobic jar, one-level oxygen-poor tank, one-level good oxygen pond, second grade oxygen-poor tank, second grade good oxygen pond, second grade biochemical sedimentation tank, strong oxidation pond, dosing final sedimentation tank and clean water basin that communicate in proper order, one-level good oxygen pond with be equipped with first advection sedimentation tank and first air stripping pond between the one-level oxygen-poor tank, one-level good oxygen pond first advection sedimentation tank first air stripping pond with one-level oxygen-poor tank communicates in proper order through first mixed liquid return line, second advection sedimentation tank and second air stripping pond are equipped with between the second grade oxygen-poor tank, second advection sedimentation tank with second oxygen-poor tank communicates in proper order through second mixed liquid return line, one-level good oxygen pond with all install the dive mixer in the second good oxygen pond, and all be equipped with aeration dish and biological filler.
2. The low energy wastewater treatment system of claim 1, wherein the dosing sedimentation tank is fitted with a first lime addition line and a first PAM addition line.
3. The low energy wastewater treatment system of claim 1, wherein the dosing final sedimentation tank is equipped with a second lime addition line, a second PAM addition line, and a PAC addition line.
4. The low energy wastewater treatment system of claim 1, wherein a mixed liquor reflux pump is installed in the UASB anaerobic tank.
5. The low energy wastewater treatment system of claim 1, wherein a disinfection tank is disposed between the dosing final sedimentation tank and the clean water tank.
6. The low energy wastewater treatment system of claim 1, wherein a sludge pump is installed in the secondary biochemical sedimentation tank and the dosing final sedimentation tank.
7. The low-energy sewage treatment system according to claim 1, wherein a sludge return line is provided between the secondary biochemical sedimentation tank and the primary anoxic tank.
8. The low-energy-consumption sewage treatment system according to claim 1, wherein a ferrous sulfate adding pipeline and a hydrogen peroxide adding pipeline are installed in the strong oxidation tank.
9. The low energy wastewater treatment system of claim 1, wherein the water inlet of the water collection tank is provided with a grating, and a plug flow stirrer is arranged in the water collection tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223572671.4U CN219194742U (en) | 2022-12-29 | 2022-12-29 | Low-energy-consumption sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223572671.4U CN219194742U (en) | 2022-12-29 | 2022-12-29 | Low-energy-consumption sewage treatment system |
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| CN219194742U true CN219194742U (en) | 2023-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117585872A (en) * | 2024-01-19 | 2024-02-23 | 广州众行环保科技有限公司 | Two-stage AO integrated sewage treatment system |
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2022
- 2022-12-29 CN CN202223572671.4U patent/CN219194742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117585872A (en) * | 2024-01-19 | 2024-02-23 | 广州众行环保科技有限公司 | Two-stage AO integrated sewage treatment system |
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