CN213865856U - Urban domestic sewage treatment system - Google Patents
Urban domestic sewage treatment system Download PDFInfo
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- CN213865856U CN213865856U CN202022985129.6U CN202022985129U CN213865856U CN 213865856 U CN213865856 U CN 213865856U CN 202022985129 U CN202022985129 U CN 202022985129U CN 213865856 U CN213865856 U CN 213865856U
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- 239000010865 sewage Substances 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000011001 backwashing Methods 0.000 claims description 42
- 239000002351 wastewater Substances 0.000 claims description 20
- 239000010802 sludge Substances 0.000 claims description 19
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 208000034699 Vitreous floaters Diseases 0.000 claims description 5
- 239000003344 environmental pollutant Substances 0.000 claims description 5
- 231100000719 pollutant Toxicity 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005189 flocculation Methods 0.000 claims description 4
- 230000016615 flocculation Effects 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 231100001240 inorganic pollutant Toxicity 0.000 claims description 2
- 235000021317 phosphate Nutrition 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 230000000249 desinfective effect Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model provides an urban domestic sewage treatment system, the purpose is that the volume expansion ability that lacks and play water quality fluctuation great technical problem who solves prior art scheme existence. The treatment system comprises a pretreatment section, a secondary treatment section, an advanced treatment section and a disinfection treatment section, wherein the secondary treatment section comprises a biological aerated filter, and the advanced treatment section comprises a high-efficiency sedimentation tank and a denitrification deep-bed filter which are sequentially connected. This application adopts bological aerated filter to accept the preliminary treatment water body, because of its nimble configuration form, makes it have nimble capacity and very big dilatation ability, increases the situation phase-match with present sewage treatment capacity, is favorable to controlling the transformation upgrade cost. Simultaneously, this application adopts the deep bed filtering pond of denitrification to accept disinfection treatment. By utilizing the structural characteristics of the denitrification deep-bed filter and the advantage of no need of maintenance, the fluctuation of treatment effect caused by periodic maintenance of the sedimentation tank is compensated, and the stability of the effluent quality is ensured.
Description
Technical Field
The application relates to the technical field of urban sewage treatment, in particular to an urban domestic sewage treatment system.
Background
With the development of economy in China, the discharge amount of sewage is increasing day by day, and the environmental pressure is suddenly increased. In order to solve the above problems, the sewage discharge requirements are becoming stricter. At present, high emission standards such as 'quasi-four-type' or ultra-clean emission are implemented for parts of classified areas and areas with small environmental capacity of receiving water bodies. The treatment targets of the projects are mostly domestic sewage, the contents of aerobic organic pollutants, eutrophic pollutants, acid and alkali salt pollutants and the like are high, and the treatment targets can reach the standard only by adopting multi-stage and advanced treatment.
According to the practical needs, the technical scheme mainly aims at solving the problems of upgrading the existing facilities and removing pollutants such as total nitrogen, total phosphorus and the like in sewage, adopts an MBBR biochemical pool, a Bardenpho biological pool and the like as carrying equipment after pretreatment, and adopts a sedimentation tank as a terminal before disinfection. Therefore, the problems that the capacity expansion capacity is lacked, the fluctuation of the effluent quality is large and the like exist in the prior art scheme.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the application provides the urban domestic sewage treatment system, and solves the technical problems of lack of capacity expansion capability and large fluctuation of effluent quality existing in the prior art.
In order to achieve the above object, the present application provides an urban domestic sewage treatment system, including the preliminary treatment section for cut off floater, suspended solid in the sewage, include: the coarse grating is used for intercepting large-size suspended matters; the fine grating is used for intercepting small-size floaters and suspended matters; the grit chamber is used for removing granular suspended matters; wherein, sewage flows through the coarse grating, the fine grating and the grit chamber in sequence; in the second stage, biological aeration filter tank is adopted to carry out biological oxidation, flocculation and filtration treatment on the sewage; the advanced treatment section is used for removing soluble pollutants in sewage and comprises: the efficient sedimentation tank is used for removing organic pollutants, inorganic pollutants, phosphates and emulsified oil in the sewage; the denitrification deep bed filter is used for carrying out denitrification and filtration treatment on the sewage; wherein, sewage flows through the high-efficiency sedimentation tank and the denitrification deep bed filter in turn; a disinfection treatment section for killing microorganisms in the sewage; wherein, the sewage flows through the pretreatment section, the secondary treatment section, the advanced treatment section and the disinfection treatment section in sequence and then is discharged.
This application adopts bological aerated filter to accept the preliminary treatment water body, because of its nimble configuration form, makes it have nimble capacity and very big dilatation ability, increases the situation phase-match with present sewage treatment capacity, is favorable to controlling the transformation upgrade cost. Simultaneously, this application adopts the deep bed filtering pond of denitrification to accept disinfection treatment. By utilizing the structural characteristics of the denitrification deep-bed filter and the advantage of no need of maintenance, the fluctuation of treatment effect caused by periodic maintenance of the sedimentation tank is compensated, and the stability of the effluent quality is ensured.
In one embodiment of the present disclosure, the secondary processing stage further comprises: the first back-flushing clean water tank is communicated with the biological aerated filter through a back-flushing pipeline; the outlet end of the anoxic sedimentation tank is communicated with the inlet end of the biological aerated filter through a pipeline; wherein, the outlet end of the biological aerated filter is respectively communicated with the inlet end of the first backwashing clean water tank and the inlet end of the high-efficiency sedimentation tank in a control way through branch pipelines; the outlet end of the first back-flushing clean water tank is also communicated with the inlet end of the anoxic sedimentation tank through a control pipeline.
In one embodiment of the present disclosure, the deep processing section further includes: the second back-flushing clean water tank is communicated with the denitrification deep bed filter tank through a back-flushing pipeline; wherein the inlet end of the second backwashing clear water tank is communicated with the outlet end of the denitrification deep bed filter tank through a pipeline; the outlet end of the second back-washing clean water tank is connected with the disinfection treatment section through a pipeline.
In one embodiment disclosed in the present application, the municipal domestic sewage treatment system further comprises: the inlet end of the backwashing wastewater tank is respectively communicated with the backwashing wastewater outlet end of the aeration biological filter tank and the backwashing wastewater outlet end of the denitrification deep bed filter tank through control pipelines, and the outlet end of the backwashing wastewater tank is connected to the fine grating through a lifting pipeline.
The application recovers the backwashing wastewater of the aeration biological filter tank and the denitrification deep bed filter tank through the backwashing wastewater tank, and uses the wastewater to wash the fine grids of the pretreatment section, thereby ensuring the treatment efficiency of the fine grids and improving the utilization efficiency of water resources.
In one embodiment of the present disclosure, the disinfection treatment section includes a uv disinfection tunnel.
In one embodiment of the present disclosure, the sterilization treatment section further comprises a chemical sterilization treatment zone.
In one embodiment disclosed in the present application, the municipal domestic sewage treatment system further comprises: the dosing room is used for temporary storage and feeding of medicaments, comprises a plurality of metering pipelines and is respectively communicated with the high-efficiency sedimentation tank and the denitrification deep bed filter.
In one embodiment disclosed in the present application, the municipal domestic sewage treatment system further comprises: the sludge treatment section is used for treating sludge in the high-efficiency sedimentation tank; the sludge is transported to a sludge concentration tank and a sludge dewatering room in sequence for treatment and then transported outside.
This application can improve high-efficient sedimentation tank periodic maintenance efficiency through the sludge treatment section of addding.
In conclusion, the application has the following beneficial effects:
1. this application adopts bological aerated filter to accept the preliminary treatment water body, because of its nimble configuration form, makes it have nimble capacity and very big dilatation ability, increases the situation phase-match with present sewage treatment capacity, is favorable to controlling the transformation upgrade cost. Simultaneously, this application adopts the deep bed filtering pond of denitrification to accept disinfection treatment. By utilizing the structural characteristics of the denitrification deep-bed filter and the advantage of no need of maintenance, the fluctuation of treatment effect caused by periodic maintenance of the sedimentation tank is compensated, and the stability of the effluent quality is ensured.
2. The application recovers the backwashing wastewater of the aeration biological filter tank and the denitrification deep bed filter tank through the backwashing wastewater tank, and uses the wastewater to wash the fine grids of the pretreatment section, thereby ensuring the treatment efficiency of the fine grids and improving the utilization efficiency of water resources.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic process flow diagram of an embodiment of the present application.
Reference numerals: 1. the system comprises a coarse grating, 2. a fine grating, 3. a rotational flow grit chamber, 4. an anoxic sedimentation tank, 5. an aeration biological filter, 6. a high-efficiency sedimentation tank, 7. a denitrification deep bed filter, 8. a second backwashing clear water tank, 9. an ultraviolet disinfection channel, 11. a first backwashing clear water tank, 12. a backwashing wastewater tank, 13. a dosing room, 14. a sludge concentration tank and 15. a sludge dewatering room.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. In order to simplify the disclosure of embodiments of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the embodiments of the application. Moreover, embodiments of the present application may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The embodiment of the application provides an urban domestic sewage treatment system, which is used for solving the technical problems of lack of capacity expansion capacity and large fluctuation of effluent quality in the prior art.
As shown in fig. 1, the municipal domestic sewage treatment system provided by this embodiment sequentially includes a coarse grating 1, a fine grating 2, a rotational flow grit chamber 3, an anoxic settling tank 4, an aeration biological filter 5, a high efficiency settling tank 6, a denitrification deep bed filter 7, a second backwashing clear water tank 8, an ultraviolet disinfection canal 9, and a chemical disinfection treatment area, which are connected to each other, according to the water flow direction. In addition, the system also comprises a first backwashing clean water tank 11, a backwashing wastewater tank 12, a dosing room 13, a sludge concentration tank 14 and a sludge dewatering room 15.
Wherein,
the outlet end of the biological aerated filter 5 is provided with a branch pipeline which is respectively communicated with the inlet ends of the first backwashing clean water tank 11 and the high-efficiency sedimentation tank 6 in a control way; in the embodiment, the water level in the first backwashing clear water tank 11 is kept constant by adopting the existing liquid level monitoring and automatic control technology;
the first backwashing clear water tank 11 is communicated with the biological aerated filter 5 through a backwashing pipeline in a control way, and periodically backwashing the biological aerated filter 5;
the second backwashing clear water tank 8 is communicated with the denitrification deep bed filter tank 7 through a backwashing pipeline, and periodically performs backwashing treatment on the denitrification deep bed filter tank 7;
the outlet end of the first backwashing clear water tank 11 is communicated with the inlet end of the anoxic sedimentation tank 4 through a control pipeline, and the nitrified liquid is guided to flow back to the anoxic sedimentation tank 4 at regular intervals;
the backwashing wastewater outlet of the aeration biological filter 5 and the backwashing wastewater outlet of the denitrification deep bed filter 7 are respectively communicated with the inlet end of a backwashing wastewater tank 12 through a control pipeline;
the outlet end of the back flushing wastewater tank 12 is connected to the fine grid 2 through a lifting pipeline to flush the fine grid;
the dosing room 13 comprises three groups of metering pipelines which are respectively used for quantitatively adding PAM and PAC into the high-efficiency sedimentation tank 6 and quantitatively adding sodium acetate into the denitrification deep bed filter tank 7;
the high-efficiency sedimentation tank 6, the sludge concentration tank 14 and the sludge dewatering room 15 are sequentially communicated through a sludge transfer pipeline.
In actual use, sewage flowing into water by gravity is removed most of suspended matters, floaters and particles with large specific gravity after passing through a pretreatment section constructed by a coarse grating, a fine grating and a rotational flow grit chamber. In an application case, the removal rate of the cyclone grit chamber to fine sand grains with the grain diameter of more than 0.1mm in suspended matters can reach 73 percent, so that the pretreatment section of the application is not provided with a primary grit chamber.
The raw water treated by the pretreatment section enters an anoxic sedimentation tank for pre-sedimentation and pre-nitrification treatment. Then enters an aeration biological filter for biological oxidation, biological flocculation and filtration treatment. In an application case, the aeration biological filter adopts an up-flow mode that water and gas flow in the same direction, sewage flowing in from an anoxic sedimentation tank enters the tank from the lower part of the aeration biological filter, water is uniformly distributed through a filter head, and simultaneously, the water and the gas pass through a filter layer from bottom to top through aeration of the aeration head, so that degradation, nitrification and ammonia nitrogen of carbon-containing organic matters (BOD) in raw water, interception of SS entering along with the sewage and a falling biological membrane are realized. And after the single treatment is finished, backwashing the biological aerated filter through the first backwashing clean water tank and the backwashing pipeline.
The raw water treated by the secondary treatment section enters a high-efficiency sedimentation tank. In the mixed reaction zone, the sludge, the medicament and the raw water are quickly condensed by the lifting action of the stirrer, and then lifted to the plug flow reaction zone by the impeller to perform slow flocculation reaction so as to form larger floccules, and then the floccules enter the inclined tube settling zone to be separated.
Clear water obtained by the treatment of the high-efficiency sedimentation tank enters the denitrification deep bed filter tank through a pipeline. Raw water enters the bottom of the filter through a distribution groove. The air distribution facility arranged at the bottom of the filter tank uniformly distributes water and air through the resistance of the filter material in the rising process, a large amount of organic matters and ammonia nitrogen which are degraded by microorganisms are attached to the surface of the filter material, and effluent is discharged from the upper part. In an application case, the denitrification deep bed filter adopts 2-3 mm quartz sand medium filter materials, the depth of the filter bed is 1.83m, and the SS (suspended solid) of effluent can be ensured to be lower than 5 mg/L. The surface layer of the filter adopts homogeneous quartz sand, so that solid impurities are allowed to penetrate through the surface layer of the filter bed and go deep into a filter material of the filter, and the effect of intercepting solid matters in the whole filter in depth is achieved. No movable parts are arranged in the filter tank, the filter material is free from loss, and the filter tank is free from maintenance for the whole life. And after the single treatment is finished, backwashing the denitrification deep bed filter tank through the second backwashing clear water tank and the backwashing pipeline.
The clear water after the advanced treatment section is discharged into the ultraviolet disinfection channel through the second back-flushing clear water tank and is disinfected by matching with chemical agents, so that the coliform flora number in the outlet water reaches the standard, and the water is metered and discharged.
Claims (8)
1. Municipal domestic sewage treatment system, its characterized in that includes:
the preliminary treatment section for cut off floater, suspended solid in the sewage includes:
the coarse grating is used for intercepting large-size suspended matters;
the fine grating is used for intercepting small-size floaters and suspended matters;
the grit chamber is used for removing granular suspended matters;
wherein the sewage flows through the coarse grating, the fine grating and the grit chamber in sequence;
the secondary treatment section comprises a biological aerated filter for carrying out biological oxidation, flocculation and filtration treatment on the sewage;
the advanced treatment section is used for removing soluble pollutants in sewage and comprises:
the efficient sedimentation tank is used for removing organic pollutants, inorganic pollutants, phosphates and emulsified oil in the sewage;
the denitrification deep bed filter is used for carrying out denitrification and filtration treatment on the sewage;
wherein, sewage flows through the high-efficiency sedimentation tank and the denitrification deep bed filter in sequence;
a disinfection treatment section for killing microorganisms in the sewage;
wherein, sewage flows through the pretreatment section, the secondary treatment section, the advanced treatment section and the disinfection treatment section in sequence and then is discharged.
2. The municipal domestic sewage treatment system according to claim 1, wherein said secondary treatment section further comprises:
the first back-flushing clean water tank is communicated with the biological aerated filter through a back-flushing pipeline;
the outlet end of the anoxic sedimentation tank is communicated with the inlet end of the biological aerated filter through a pipeline;
wherein, the outlet end of the biological aerated filter is respectively communicated with the inlet end of the first backwashing clean water tank and the inlet end of the high-efficiency sedimentation tank in a control way through branch pipelines; the outlet end of the first back-flushing clean water tank is also communicated with the inlet end of the anoxic sedimentation tank through a control pipeline.
3. The municipal sewage treatment system according to claim 1, wherein said advanced treatment section further comprises:
the second back-flushing clean water tank is communicated with the denitrification deep bed filter tank through a back-flushing pipeline;
the inlet end of the second backwashing clear water tank is communicated with the outlet end of the denitrification deep bed filter tank through a pipeline; the outlet end of the second backwashing clean water tank is connected with the disinfection treatment section through a pipeline.
4. The municipal domestic sewage treatment system according to claim 1, further comprising:
and the inlet end of the backwashing wastewater tank is respectively communicated with the backwashing wastewater outlet end of the biological aerated filter and the backwashing wastewater outlet end of the denitrification deep bed filter through control pipelines, and the outlet end of the backwashing wastewater tank is connected to the fine grid through a lifting pipeline.
5. The municipal domestic sewage treatment system according to claim 1, wherein the disinfection treatment section comprises a uv disinfection canal.
6. The municipal domestic sewage treatment system according to claim 5, wherein said disinfecting section further comprises a chemical disinfecting zone.
7. The municipal domestic sewage treatment system according to claim 1, further comprising:
the dosing room is used for temporary storage and feeding of medicaments, comprises a plurality of metering pipelines and is communicated with the efficient sedimentation tank and the denitrification deep bed filter tank respectively.
8. The municipal domestic sewage treatment system according to claim 1, further comprising: the sludge treatment section is used for treating the sludge in the high-efficiency sedimentation tank; and the sludge is transported to a sludge concentration tank and a sludge dewatering room in sequence and then transported outside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022985129.6U CN213865856U (en) | 2020-12-14 | 2020-12-14 | Urban domestic sewage treatment system |
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| CN202022985129.6U CN213865856U (en) | 2020-12-14 | 2020-12-14 | Urban domestic sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215505A (en) * | 2022-05-25 | 2022-10-21 | 中誉设计有限公司 | Sewage treatment system with strong impact load resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115215505A (en) * | 2022-05-25 | 2022-10-21 | 中誉设计有限公司 | Sewage treatment system with strong impact load resistance |
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Inventor after: Peng Chun Inventor after: Hu Xiao Inventor after: Zeng Fenghezi Inventor after: Ren Siheng Inventor before: Peng Chun Inventor before: Hu Xiao Inventor before: Zygote Inventor before: Ren Siheng |