CN202099169U - Device for advanced treatment of secondary effluent in municipal sewage plant - Google Patents
Device for advanced treatment of secondary effluent in municipal sewage plant Download PDFInfo
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- CN202099169U CN202099169U CN2011202028785U CN201120202878U CN202099169U CN 202099169 U CN202099169 U CN 202099169U CN 2011202028785 U CN2011202028785 U CN 2011202028785U CN 201120202878 U CN201120202878 U CN 201120202878U CN 202099169 U CN202099169 U CN 202099169U
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Abstract
The utility model relates to a device for advanced treatment of secondary effluent in a municipal sewage plant. The device is provided with a denitrification biological filter tank, a membrane filter tank, an ozone contact tank, a carbon source box, a flow-adjustable frequency-variable feeding pump and pipes; the carbon source feed pipe is communicated with the water inlet pipe of the denitrification biological filter tank; and the effluent from the membrane filter tank is communicated with the ozone contact tank. The device is further provided with a backwashing pipe, a clear water tank communicated with the ozone contact tank, a nitrate nitrogen concentration meter, a COD concentration meter and a controller. The process comprises the following steps: (1) setting the control data of carbon source feeding and water intake of the denitrification biological filter tank, and starting the device; (2) feeding carbon sources to allow denitrification treatment; (3) performing treatment in the membrane filter tank; (4) performing treatment in the ozone contact tank; and (5) repeating from the step (2) to the step (4). The device is suitable for sewage two-stage advanced treatment, has a perfect structure, a good process effect and a high efficiency.
Description
Technical field
The utility model belongs to a kind of regeneration effluent processing technology field, and concrete is a kind of device that is used for sewage work's secondary treatment yielding water advanced treatment
Background technology
Urban sewage reutilization is one of effective way of alleviating shortage of water resources; Can be used as multiple uses such as reclaimed water, municipal administration greening water, process water, landscape ecological moisturizing and field irrigation through the municipal effluent after the purifying treatment, the fresh water amount of alternative equivalent.A stable new water source had both been opened up in the regenerated using of sewage, can reduce the carrying capacity of environment that discharge of wastewater causes again, to alleviating water scarcity and improving water surrounding important meaning was arranged all.Yet to be murder by poisoning pollutent COD, nutritive salt and pathogenic micro-organism residual in the reuse water constituted potential harm through different reuse approach to the ecological security of biology and receiving water body to the municipal wastewater treatment plant secondary treatment yielding water.Therefore, municipal effluent regenerated economic development problem is the urban sewage reutilization problem demanding prompt solution.
Show according to relevant data: still lingering section organism and suspended substance in sewage work's secondary treatment yielding water.These organism and suspended substance bring serious destruction can for ecotope and HUMAN HEALTH in the application of reuse water, bring potential risks.The city sewage deep treatment technology is main to be exactly to remove pollutent and the pathogenic micro-organism that in traditional secondary treatment process, can not remove or can not remove fully.Because the purpose of reuse of wastewater is different, the degree of treatment of sewage is also required difference, need select different treatment process for use to concrete reuse purpose.
The sewerage advanced treatment process of traditional secondary treatment yielding water is the coagulating sedimentation sand filtration; Its objective is and remove suspended substance, turbidity and kill the water-borne infection germ; Raising is to the clearance of nutritive substances such as organism, turbidity, phosphorus and nitrogen and other dissolved matters; Improve effluent quality, but be difficult to thoroughly remove nutritive salt and suspended substance, poisonous and harmful micropollutant and colourity etc. in the water, be difficult to guarantee that effluent quality satisfies the requirement of surface water body.Therefore, need do further improvement, to improve the effect of advanced treatment of wastewater to the sewerage advanced treatment process of traditional secondary treatment yielding water; Further improve the water quality of reuse water; And the simplification operation process, reduce running cost, satisfy needs of society better.
The utility model content
The purpose of the utility model is in order to solve the problems of the technologies described above; A kind of device and technology of municipal wastewater treatment plant secondary treatment yielding water advanced treatment are proposed; This device and process using denitrification bio-filter, ultrafiltration membrance filter, ozonation treatment technology satisfy the requirement of reuse water total nitrogen through the denitrification bio-filter denitrogenation, not only can remove turbidity through ultrafiltration membrance filter again; Reduce mikrobe and COD simultaneously; The colourity of follow-up ozonation treatment in not only can oxidation regeneration water is that the water quality Oranoleptic indicator reaches requirement, and can kill the part pathogenic micro-organism, reduces the consumption of follow-up sterilizing process sterilizing agent.This advanced treatment apparatus and technical process be simple, handle the quality height, reduced investment, occupation of land are little.
The purpose of the utility model realizes through following technical scheme: the device of municipal wastewater treatment plant secondary treatment yielding water advanced treatment is characterized in that: denitrification bio-filter, membrane filtration pond and the ozone contact tank arranging and be communicated with before and after being provided with in regular turn; Said denitrification filter pool filler adopts the heavy filtrate of density＞1.0; The water inlet pipe of denitrification bio-filter is communicated with the secondary treatment yielding water pipe of sewage work; This water inlet pipe is provided with the adjustable variable frequency pump of flow, the water (flow) direction supreme upflowing of serving as reasons down in the denitrification bio-filter; Be provided with the carbon source case, the adjustable frequency conversion of adjustable flow adds pump and pipeline, the pipeline that this carbon source adds is communicated with the suction culvert of denitrification bio-filter; Hollow fiber ultrafiltration membrane is adopted in said membrane filtration pond, and this ultra-filtration membrane aperture 0.02 μ m adopts complete immersion suction negative pressure to produce water, and water outlet is communicated with ozone contact tank; Be provided with ozonizer and ozone adds gas distribution pipe, this ozone adds gas distribution pipe and is communicated with said ozone contact tank bottom, through distribution device and water countercurrent flow; Said denitrification bio-filter and membrane filtration pond are provided with the back flushing pipeline that is communicated with the water outlet in membrane filtration pond; The water outlet of said ozone contact tank is provided with the pipeline and the pipeline that behind sterilizing unit, feeds clean water basin again that directly feed clean water basin; Ozone contact tank available depth 3-6m; Water retention time 10-15min in the pond, the bottom, pond is provided with the bottom aeration board, and pH is 6-7 in the ozone contact tank; The ozone dosage is 1-15mg/L, is preferably 3-8mg/L; On the water inlet of said denitrification bio-filter and outlet conduit, be provided with online nitrate nitrogen densitometer and online COD densitometer; And be provided with unit; This unit carries out signal with said online nitrate nitrogen densitometer with online COD densitometer and is connected, and adds frequency conversion on the pipe and add pump and carry out flow control and be connected with variable frequency pump and carbon source on the water inlet pipe of said denitrification filter.
Adopt the device and corresponding treatment process of the utility model, can make full use of remaining carbon source in the secondary treatment yielding water, denitrification denitrogenation, the while can increase the input of carbon source again as required, with the effect that guarantees to handle; Can effectively remove insoluble particles attitude COD and pathogenic micro-organism reduction delivery turbidity through membrane filtration.Ozone contact tank is unsaturated compounds in the oxidizing water effectively, can effectively kill the part pathogenic micro-organism simultaneously.Therefore, many advantages such as the utlity model has that structure is perfect, technical process is simple, handle that quality is good, efficient is high, reduced investment, occupation of land are little have important application prospects on the advanced treatment of municipal sewage plant's secondary treatment yielding water.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The profile of the utility model does not receive the restriction of this figure, and only profile changes the protection domain that also belongs to the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further explanation: embodiment: the device of municipal wastewater treatment plant secondary treatment yielding water advanced treatment, the denitrification bio-filter 3, membrane filtration pond 5 and the ozone contact tank 6 that are provided with front and back arrangement in regular turn and are communicated with; Said denitrification filter pool filler adopts the heavy filtrate of density＞1.0; The water inlet pipe of denitrification bio-filter is communicated with the secondary treatment yielding water pipe 10 of sewage work; This water inlet pipe is provided with the adjustable variable frequency pump 22 of flow, the water (flow) direction supreme upflowing of serving as reasons down in the denitrification bio-filter; Be provided with carbon source case 1, the adjustable flow frequency conversion adds pump 21 and pipeline, the pipeline that this carbon source adds is communicated with the suction culvert of denitrification bio-filter; Hollow fiber ultrafiltration membrane is adopted in said membrane filtration pond, and this ultra-filtration membrane aperture 0.02 μ m adopts complete immersion suction negative pressure to produce water, and water outlet is communicated with ozone contact tank 6; Be provided with ozonizer 8 and add gas distribution pipe with ozone, this ozone adds gas distribution pipe and is communicated with said ozone contact tank bottom, through distribution device and water countercurrent flow; Said denitrification bio-filter and membrane filtration pond are provided with the back flushing pipeline 9 that is communicated with the water outlet in membrane filtration pond; The water outlet of said ozone contact tank is provided with the pipeline 71 and the pipeline that behind sterilization pool 7, feeds clean water basin again that directly feed clean water basin 81; Ozone contact tank available depth 5m; Water retention time 12min in the pond; The bottom, pond is provided with the bottom aeration board, and pH is 6 in the ozone contact tank, ozone dosage 6mg/L; On the water inlet of said denitrification bio-filter and outlet conduit, be provided with online nitrate nitrogen densitometer and online COD densitometer 4,41; And be provided with unit 2; This unit carries out signal with said online nitrate nitrogen densitometer with online COD densitometer and is connected, and adds frequency conversion on the pipe and add pump and carry out flow control and be connected with variable frequency pump and carbon source on the water inlet pipe of said denitrification filter.
Take domestic certain sewage disposal plant effluent in the present embodiment, the index contrast before and after the art breading of present embodiment:
Detected result shows that the influent quality of city domestic sewage is BOD5 3-8mg/L, COD 35mg/L, and TN 22mg/L, through behind the device of the utility model, reach following effect: nitrogen removal rate reaches more than 70%.Delivery turbidity can keep＜0.1NTU, and the water outlet TN of this device is stable to be reached below the 10mg/L.Effluent quality other indexs except that total nitrogen are stable reach " water environment quality standard " (GB3838-2002) in requirement of IV class water body.This technology is simple, and the investment working cost is few, practices thrift material consumption, and environmental influence is little, and control flexibly, and is easy and simple to handle, and level of automation is high, has improved the processing load and the removal effect of advanced treatment of wastewater equipment greatly.
Claims (1)
1. the device of a municipal wastewater treatment plant secondary treatment yielding water advanced treatment is characterized in that: denitrification bio-filter (3), membrane filtration pond (5) and the ozone contact tank (6) arranging and be communicated with before and after being provided with in regular turn; Said denitrification filter pool filler adopts the heavy filtrate of density＞1.0; The water inlet pipe of denitrification bio-filter is communicated with the secondary treatment yielding water pipe (10) of sewage work; This water inlet pipe is provided with the adjustable variable frequency pump of flow (22), the water (flow) direction supreme upflowing of serving as reasons down in the denitrification bio-filter; Be provided with carbon source case (1), the adjustable flow frequency conversion adds pump (21) and pipeline, the pipeline that this carbon source adds is communicated with the suction culvert of denitrification bio-filter; Hollow fiber ultrafiltration membrane is adopted in said membrane filtration pond, and this ultra-filtration membrane aperture 0.02 μ m adopts complete immersion suction negative pressure to produce water, and water outlet is communicated with ozone contact tank (6); Be provided with ozonizer (8) and ozone and add gas distribution pipe, this ozone adds gas distribution pipe and is communicated with said ozone contact tank bottom, through distribution device and water countercurrent flow; Said denitrification bio-filter and membrane filtration pond are provided with the back flushing pipeline (9) that is communicated with the water outlet in membrane filtration pond; The water outlet of said ozone contact tank is provided with the pipeline (71) and the pipeline that behind sterilization pool (7), feeds clean water basin again that directly feed clean water basin (81); Ozone contact tank available depth 3-6m; Water retention time 10-15min in the pond; The bottom, pond is provided with the bottom aeration board, and pH is 6-7 in the ozone contact tank, and the ozone dosage is 1-15mg/L; On the water inlet of said denitrification bio-filter and outlet conduit, be provided with online nitrate nitrogen densitometer and online COD densitometer (4,41); And be provided with unit (2); This unit carries out signal with said online nitrate nitrogen densitometer with online COD densitometer and is connected, and adds frequency conversion on the pipe and add pump and carry out flow control and be connected with variable frequency pump and carbon source on the water inlet pipe of said denitrification filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202028785U CN202099169U (en) | 2011-06-16 | 2011-06-16 | Device for advanced treatment of secondary effluent in municipal sewage plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202028785U CN202099169U (en) | 2011-06-16 | 2011-06-16 | Device for advanced treatment of secondary effluent in municipal sewage plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202099169U true CN202099169U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202028785U Expired - Lifetime CN202099169U (en) | 2011-06-16 | 2011-06-16 | Device for advanced treatment of secondary effluent in municipal sewage plant |
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| CN (1) | CN202099169U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249491A (en) * | 2011-06-16 | 2011-11-23 | 北京城市排水集团有限责任公司 | Deep treatment device and process for secondary treatment effluent of urban sewage plant |
| WO2014117303A1 (en) * | 2013-02-04 | 2014-08-07 | Liu Chaonan | Mobile integrated drinking water producing unit with ultra-filtration membrane |
| CN105621814A (en) * | 2016-03-07 | 2016-06-01 | 北京恩菲环保股份有限公司 | High-quality regenerated recycle water treatment system and method |
| CN109626707A (en) * | 2018-10-29 | 2019-04-16 | 中国电器科学研究院有限公司 | A kind of method and system of municipal sewage plant advanced treating |
-
2011
- 2011-06-16 CN CN2011202028785U patent/CN202099169U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249491A (en) * | 2011-06-16 | 2011-11-23 | 北京城市排水集团有限责任公司 | Deep treatment device and process for secondary treatment effluent of urban sewage plant |
| WO2014117303A1 (en) * | 2013-02-04 | 2014-08-07 | Liu Chaonan | Mobile integrated drinking water producing unit with ultra-filtration membrane |
| CN105621814A (en) * | 2016-03-07 | 2016-06-01 | 北京恩菲环保股份有限公司 | High-quality regenerated recycle water treatment system and method |
| CN105621814B (en) * | 2016-03-07 | 2018-09-11 | 北京恩菲环保股份有限公司 | High-quality regeneration water treatment system and method |
| CN109626707A (en) * | 2018-10-29 | 2019-04-16 | 中国电器科学研究院有限公司 | A kind of method and system of municipal sewage plant advanced treating |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20130424 |
|
| RGAV | Abandon patent right to avoid regrant |