CN113788543A - Rural sewage treatment system based on stabilization pond - Google Patents
Rural sewage treatment system based on stabilization pond Download PDFInfo
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- CN113788543A CN113788543A CN202111127745.0A CN202111127745A CN113788543A CN 113788543 A CN113788543 A CN 113788543A CN 202111127745 A CN202111127745 A CN 202111127745A CN 113788543 A CN113788543 A CN 113788543A
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- 239000010865 sewage Substances 0.000 title claims abstract description 66
- 230000006641 stabilisation Effects 0.000 title description 9
- 238000011105 stabilization Methods 0.000 title description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000014759 maintenance of location Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000005273 aeration Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 235000003642 hunger Nutrition 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Ecology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention belongs to the field of sewage treatment, and relates to a rural sewage treatment system. The invention provides a rural sewage treatment system based on a preposed pond, which comprises the preposed pond, a secondary treatment facility and a tertiary treatment facility, wherein the preposed pond, the secondary treatment facility and the tertiary treatment facility are sequentially connected; sewage to be treated firstly enters the preposed pond, then sequentially enters the secondary treatment facility and the tertiary treatment facility, and is finally discharged; when the pre-pond liquid level is lower than 30% of the depth of the pre-pond, the water body of the secondary treatment facility flows back to the pre-pond. The invention also includes related devices and applications thereof. No matter the inlet water quantity or the water quality is changed greatly, the rural sewage treatment system can make up a carbon source for a sewage biological treatment facility, so that the denitrification effect is ensured, and the outlet water quality is stable.
Description
Technical Field
The invention belongs to the field of sewage treatment, relates to a rural sewage treatment system, and particularly relates to a rural sewage treatment system based on a preposed pond. The invention also includes related devices and applications thereof.
Background
The rural sewage in various regions at present often has the characteristics of extremely unstable water quality and water quantity, so that the conventional sewage treatment system is frequently difficult to debug, operate and maintain when being applied to the rural areas, and the rural areas generally lack funds and manpower, so that the treatment rate of the rural sewage is low and the treatment effect is poor.
The stabilization pond is a pond structure for treating sewage by utilizing the self-purification force of a water body, and the arrangement of the stabilization pond at the front end can be called as a preposed pond. At present, a stabilization pond is frequently applied independently in a large area or combined with other sewage treatment systems based on land treatment such as artificial wetlands and the like, or is placed in a sewage biological treatment facility for tail water treatment, and the application mode of the stabilization pond in the sewage biological treatment facility is only reported. The stabilization pond structure can adjust and buffer the sewage quantity and pollutants in the sewage quantity, so that the treatment effect caused by unstable water quality and quantity can be improved by arranging the stabilization pond structure in front of a sewage biological treatment facility, and the maintenance-free property is poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a rural sewage treatment system based on a stabilization pond, which has the effects of adjusting and buffering the sewage quantity and pollutants in the sewage quantity, and improves the conditions of poor treatment effect and poor maintenance-free property caused by unstable water quality and quantity.
In order to achieve the purpose, the invention adopts the technical scheme that: the invention provides a technical scheme of a rural sewage treatment system based on a preposed pond, which specifically comprises the following steps: consists of a preposed pond, a secondary treatment facility and a tertiary treatment facility.
Further, sewage to be treated firstly enters the preposed pond, then enters the secondary treatment facility, then enters the tertiary treatment facility, and is finally discharged; when the pre-pond liquid level is lower than 30% of the depth of the pre-pond, the water body of the secondary treatment facility flows back to the pre-pond.
Wherein the hydraulic retention time of the front pond is 2-5d, and the water depth is 1.5-2 m; the construction mode of the preposed pond is the prior art and is not described in detail;
wherein, the secondary treatment facility is a sewage biological treatment facility, preferably one or more of a biological contact oxidation tank and a biological aerated filter;
further, the hydraulic retention time of the secondary treatment facility is 6-12 h.
Wherein, the third-stage treatment facility is a deep treatment facility, preferably one or more of a sand filter and an artificial wetland.
Correspondingly, the invention provides rural sewage treatment equipment, wherein the rural sewage treatment system comprises a preposed pond, a secondary treatment facility and a tertiary treatment facility which are sequentially connected;
leading the water body of the pond to enter a secondary treatment facility in a water pump lifting mode, and adjusting the flow rate by installing a ball valve and a rotor flow meter on a pipeline of the water pump entering the secondary treatment facility;
the water body of the secondary treatment facility enters the tertiary treatment facility in a self-flowing mode and flows back to the preposed pond, a two-position three-way electric valve is arranged at the water outlet of the secondary treatment facility, and a liquid level sensor is arranged on the preposed pond and communicated with the water outlet of the secondary treatment facility.
When the rural sewage treatment system based on the preposed pond is constructed, the following parts are proposed:
the hydraulic retention time of the preposed pond is more than or equal to 3d, the hydraulic retention time of the secondary treatment facility is more than or equal to 10h, and the hydraulic retention time of the tertiary treatment facility is more than or equal to 1 d.
The front pond is constructed into a film-coated pond with the length of 10-50m, the width of 5-50m and the depth of 1.5-2 m; the secondary treatment facility is a prefabricated biological contact oxidation reaction tank which is purchased from the market, and the length of the secondary treatment facility is 6-12m, the width of the secondary treatment facility is 2-3m, and the depth of the secondary treatment facility is 1.5-2.5 m; the third-level treatment facility is constructed into a vertical flow artificial wetland with the length of 5-10m, the width of 2-5m and the depth of 1-2 m.
The sewage inflow mode of the preposed pond is self-flowing;
the water body of the preposed pond enters a secondary treatment facility in a way of water pump lifting, and the water pump parameter is the flow of 1-3m3H, the lift is 8-15m, the power is 0.25-1.1kw, and the voltage is 220V or 380V; the water pump enters a pipeline of a secondary treatment facility, and a ball valve and a rotor flow meter are arranged to regulate the flow.
The invention also provides application of the rural sewage treatment equipment, and the rural sewage treatment equipment has the effects of regulating and buffering sewage quantity and pollutants in the sewage quantity.
Optionally, the rural sewage treatment equipment is arranged in front of a sewage biological treatment facility, so that poor treatment effect and poor maintenance-free performance caused by unstable water quality and water quantity are improved.
The invention arranges the preposed pond at the front end of the sewage biological treatment facility, and the preposed pond can have the following beneficial effects:
on one hand, when the water inflow amount is large, the preposed pond can store the excessive water body; when the quality of inlet water is poor, the preposed pond can dilute the inlet water; the quantity of water entering the secondary treatment facility from the preposed pond is relatively constant, so that the biological sewage treatment facility is not influenced by impact load or hunger, and the quality of the effluent is stable.
On the other hand, the preposed pond can breed a large amount of unicellular algae, can produce organic matters through photosynthesis, and makes up a carbon source for a sewage biological treatment facility, so that the denitrification effect is ensured, and the denitrification effect can still be effectively ensured in the season that the carbon source of inlet water is deficient.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Example 1
Construction of a design inflow 50m3The invention provides a rural sewage treatment system based on a preposed pond, which comprises the following parts:
the hydraulic retention time of the preposed pond is more than or equal to 3d, the hydraulic retention time of the secondary treatment facility is more than or equal to 10h, and the hydraulic retention time of the tertiary treatment facility is more than or equal to 1 d.
The front pond is constructed into a film-coated pond with the length of 13m, the width of 10m and the depth of 1.6 m; the secondary treatment facility is a prefabricated biological contact oxidation reaction tank purchased from the market, and the length of the secondary treatment facility is 6m, the width of the secondary treatment facility is 2.2m, and the depth of the secondary treatment facility is 2.2 m; the third-level treatment facility is constructed into a vertical flow constructed wetland with the length of 10m, the width of 5m and the depth of 1.2 m.
The sewage inflow mode of the preposed pond is self-flowing;
the mode that the preposed pond water body enters the secondary treatment facility is water pump lifting, and the water pump parameter is 3m of flow3H, lift 8m, power 0.25kw, voltage 220V; the water pump enters a pipeline of a secondary treatment facility, and a ball valve and a rotor flow meter are arranged to regulate the flow.
The mode that the water body of the secondary treatment facility enters the tertiary treatment facility and flows back to the preposed pond is self-flowing, and the mode that the water body of the tertiary treatment facility flows out is self-flowing; and a two-position three-way electric valve is arranged at the water outlet of the secondary treatment facility, a liquid level sensor is arranged on the front pond, and the two are connected with each other, so that when the liquid level of the front pond is lower than 30% of the depth of the front pond, the water body of the secondary treatment facility is automatically controlled to flow back to the front pond.
I.e. constructed to the above design inflow rate of 50m3The invention provides a pre-pond-based rural sewage treatment system.
Example 2
Construction of a design inflow of 30m3The invention provides a rural sewage treatment system based on a preposed pond, which comprises the following parts:
the hydraulic retention time of the preposed pond is more than or equal to 4d, the hydraulic retention time of the secondary treatment facility is more than or equal to 8h, and the hydraulic retention time of the tertiary treatment facility is more than or equal to 1 d.
The front pond is constructed into a film-coated pond with the length of 10m, the width of 10m and the depth of 1.2 m; the secondary treatment facility is a prefabricated biological contact oxidation reaction tank purchased from the market, and the length of the secondary treatment facility is 6m, the width of the secondary treatment facility is 2m, and the depth of the secondary treatment facility is 1.5 m; the third-level treatment facility is constructed into a vertical flow artificial wetland with the length of 6m, the width of 3.5m and the depth of 1.5 m.
The sewage inflow mode of the preposed pond is self-flowing;
the mode that the preposed pond water body enters the secondary treatment facility is water pump lifting, and the water pump parameter is 3m of flow3H, lift 9m, power 0.37kw, voltage 220V; the water pump enters a pipeline of a secondary treatment facility, and a ball valve and a rotor flow meter are arranged to regulate the flow.
The mode that the water body of the secondary treatment facility enters the tertiary treatment facility and flows back to the preposed pond is self-flowing, and the mode that the water body of the tertiary treatment facility flows out is self-flowing; and a two-position three-way electric valve is arranged at the water outlet of the secondary treatment facility, a liquid level sensor is arranged on the front pond, and the two are connected with each other, so that when the liquid level of the front pond is lower than 30% of the depth of the front pond, the water body of the secondary treatment facility is automatically controlled to flow back to the front pond.
I.e. constructed to the above design inflow of 30m3The invention provides a pre-pond-based rural sewage treatment system.
Example 3
The rural sewage treatment system based on the preposed pond provided in the embodiment 1 is debugged for the continuous water inlet starting in the period of 30d, and then is recorded for the water inlet and outlet quality in the period of 20d, and the results are respectively shown in the table 1 and the table 2.
TABLE 1 quality of influent water
| Time | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| COD | 365 | 328 | 134 | 150 | 344 | 292 | 241 | 194 | ||
| NH3-N | 25.2 | 12.4 | 27.0 | 26.5 | 19.8 | 24.2 | 21.5 | 25.5 | ||
| T-P | 1.55 | 1.64 | 1.62 | 1.53 | 0.86 | 1.21 | 1.22 | 1.50 | ||
| Time | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| COD | 105 | 368 | 233 | 348 | 204 | 293 | 308 | 286 | ||
| NH3-N | 18.5 | 22.3 | 24.2 | 18.6 | 20.5 | 21.5 | 21.1 | 19.8 | ||
| T-P | 1.65 | 1.47 | 1.14 | 1.12 | 1.20 | 0.96 | 1.45 | 1.28 |
Time units are d, and the rest units are mg/L; COD is chemical oxygen demand, NH3N is ammonia nitrogen and T-P is total phosphorus; the unfilled person is no water intake in the same day
TABLE 2 effluent quality
| Time | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| COD | 34 | 32 | 33 | 33 | 28 | 31 | 33 | 30 | ||
| NH3-N | 0.8 | 0.6 | 0.8 | 0.5 | 0.4 | 0.4 | 0.5 | 0.4 | ||
| T-P | 0.61 | 0.50 | 0.48 | 0.56 | 0.45 | 0.58 | 0.56 | 0.54 | ||
| Time | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| COD | 32 | 30 | 28 | 31 | 34 | 32 | 29 | 30 | ||
| NH3-N | 0.5 | 0.4 | 0.4 | 0.5 | 0.5 | 0.3 | 0.4 | 0.5 | ||
| T-P | 0.49 | 0.52 | 0.50 | 0.55 | 0.57 | 0.55 | 0.49 | 0.48 |
Time units are d, and the rest units are mg/L; COD is chemical oxygen demand, NH3N is ammonia nitrogen and T-P is total phosphorus; the unfilled person is no water intake in the same day
The results are shown in Table 3 using a commercially available pre-fabricated bio-contact oxidation reaction cell as the control for the 30d continuous inlet start-up and 20d effluent quality records for the same step-wise activity period as the secondary treatment facility in example 1.
The parameters of a commercially available pre-fabricated biological contact oxidation reaction tank identical to the secondary treatment facility in example 1 were:
under the condition of only using the prefabricated biological contact oxidation tank purchased in the market, the quality and the quantity of the inlet water are unstable, so that the prefabricated biological contact oxidation tank purchased in the market is repeatedly influenced by impact load or hunger, and the quality of the outlet water is unstable; under the condition of using the invention, the water quantity entering the secondary treatment facility from the preposed pond is relatively constant, thereby ensuring that the sewage biological treatment facility is not influenced by impact load or hunger and further ensuring the stable quality of the effluent water; and the preposed pond can breed a large amount of unicellular algae, and can produce organic matters through photosynthesis to make up a carbon source for a sewage biological treatment facility, so that the denitrification effect is ensured, and the total nitrogen removal rate is improved.
TABLE 3 control of effluent quality
Time units are d, and the rest units are mg/L; COD is chemical oxygen demand, NH3N is ammonia nitrogen and T-P is total phosphorus; the unfilled person is no water intake in the same day
As can be seen from the data in tables 1, 2 and 3, the invention can ensure the stable quality of the outlet water under the condition of unstable quality and quantity of the inlet water. Even if the difference of the water quality of the inlet water is large, the denitrification effect can still be effectively ensured when the outlet water is discharged.
The foregoing description and description of the embodiments are provided to facilitate understanding and application of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications can be made to these teachings and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above description and the description of the embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A rural sewage treatment system is characterized by comprising a preposed pond, a secondary treatment facility and a tertiary treatment facility, wherein the preposed pond, the secondary treatment facility and the tertiary treatment facility are connected in sequence;
sewage to be treated firstly enters the preposed pond, then sequentially enters the secondary treatment facility and the tertiary treatment facility, and is finally discharged; when the pre-pond liquid level is lower than 30% of the depth of the pre-pond, the water body of the secondary treatment facility flows back to the pre-pond.
2. The rural sewage treatment system of claim 1,
the hydraulic retention time of the front pond is 2-5d, and the water depth is 1.5-2 m.
3. The rural sewage treatment system of claim 1, wherein the secondary treatment facility is a biological sewage treatment facility.
4. The rural sewage treatment system of claim 1, wherein the secondary treatment facility is selected from, but not limited to: one or more of a biological contact oxidation tank and an aeration biological filter.
5. The rural sewage treatment system of claim 1, wherein the hydraulic retention time of the secondary treatment facility is 6-12 hours.
6. The rural sewage treatment system of claim 1, wherein the tertiary treatment facility is a deep treatment facility.
7. The rural sewage treatment system of claim 1, wherein the tertiary treatment facility is one or more of a sand filter and an artificial wetland.
8. A rural sewage treatment device is characterized in that a rural sewage treatment system comprises a preposed pond, a secondary treatment facility and a tertiary treatment facility, wherein the preposed pond, the secondary treatment facility and the tertiary treatment facility are connected in sequence;
leading the water body of the pond to enter a secondary treatment facility in a water pump lifting mode, and adjusting the flow rate by installing a ball valve and a rotor flow meter on a pipeline of the water pump entering the secondary treatment facility;
the water body of the secondary treatment facility enters the tertiary treatment facility in a self-flowing mode and flows back to the preposed pond, a two-position three-way electric valve is arranged at the water outlet of the secondary treatment facility, and a liquid level sensor is arranged on the preposed pond and communicated with the water outlet of the secondary treatment facility.
9. The application of the rural sewage treatment equipment in claim 8, wherein the rural sewage treatment equipment has the functions of regulating and buffering the sewage amount and pollutants in the sewage amount.
10. The application of claim 9, wherein the rural sewage treatment equipment is arranged in front of a sewage biological treatment facility to improve poor treatment effect and poor maintenance-free property caused by unstable water quality and water quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111127745.0A CN113788543A (en) | 2021-09-26 | 2021-09-26 | Rural sewage treatment system based on stabilization pond |
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| CN202111127745.0A CN113788543A (en) | 2021-09-26 | 2021-09-26 | Rural sewage treatment system based on stabilization pond |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202945125U (en) * | 2012-12-03 | 2013-05-22 | 赵保军 | Backflow type oxidation pond rural sewage treatment device |
| CN110127953A (en) * | 2019-06-05 | 2019-08-16 | 北京市水科学技术研究院 | A kind of artificial swamp short distance nitration/denitrification biological denitrogenation system and method |
| CN110127959A (en) * | 2019-06-19 | 2019-08-16 | 北京市水科学技术研究院 | A kind of artificial wet land water quality purification method |
| CN211255623U (en) * | 2019-11-07 | 2020-08-14 | 湖南九层台环境科技有限公司 | Distributed rural domestic sewage treatment system |
| US20210087088A1 (en) * | 2019-07-08 | 2021-03-25 | Tommy Gig DREWERY | Septic tank or aerobic tank level control system |
| CN112624338A (en) * | 2020-12-15 | 2021-04-09 | 浙江清华长三角研究院 | Self-adaptive adjustment method for operation mode of rural domestic sewage treatment facility under rainstorm or rainy season situation |
-
2021
- 2021-09-26 CN CN202111127745.0A patent/CN113788543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202945125U (en) * | 2012-12-03 | 2013-05-22 | 赵保军 | Backflow type oxidation pond rural sewage treatment device |
| CN110127953A (en) * | 2019-06-05 | 2019-08-16 | 北京市水科学技术研究院 | A kind of artificial swamp short distance nitration/denitrification biological denitrogenation system and method |
| CN110127959A (en) * | 2019-06-19 | 2019-08-16 | 北京市水科学技术研究院 | A kind of artificial wet land water quality purification method |
| US20210087088A1 (en) * | 2019-07-08 | 2021-03-25 | Tommy Gig DREWERY | Septic tank or aerobic tank level control system |
| CN211255623U (en) * | 2019-11-07 | 2020-08-14 | 湖南九层台环境科技有限公司 | Distributed rural domestic sewage treatment system |
| CN112624338A (en) * | 2020-12-15 | 2021-04-09 | 浙江清华长三角研究院 | Self-adaptive adjustment method for operation mode of rural domestic sewage treatment facility under rainstorm or rainy season situation |
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Application publication date: 20211214 |
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