Integrated combined-type rural domestic sewage treatment device
An integrated combined and domestic sewage technology, applied in the field of integrated combined rural domestic sewage treatment devices, can solve problems such as large floor space, achieve the effect of saving floor space, high organic matter removal efficiency, and reducing investment costs
Active Publication Date: 2011-09-14
江苏江大环境工程有限责任公司
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Problems solved by technology
[0002] At present, for the decentralized non-point source pollution treatment of rural domestic sewage, most of the domestic sewage treatment devices produced and used in my country are mainly for the removal of organic matter. With the increase of nitrogen and phosphorus pollution in surface water bodies such as lakes, reservoirs and offshore , eutrophication is becoming more and more serious, and it is very important to remove nitrogen and phosphorus in decentralized sewage treatment plants. Secondly, most of the effluent indicators of domestic sewage treatment plants currently used at home and abroad can only meet the "Comprehensive Wastewater Discharge Standard" (GB8978 -1996), relatively large footprint
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[0024] Wastewater source: No sewage pipe network has been built in a rural residential concentration area, and the daily domestic sewage is 100m 3 , discharged directly into the river.
[0025] Conventional treatment methods are adopted, and domestic sewage is discharged after a series of treatments such as grille, primary sedimentation, oxygen consumption, secondary sedimentation, flocculation sedimentation, and filtration.
[0026] The present invention treats the domestic sewage in the concentrated residential area, the domestic sewage is intercepted by the artificial grid 2 in the grid area 1 to catch the coarse dirt in the sewage, the intercepted sewage flows to the anaerobic precipitation area 3 by itself, and the supernatant passes through The overflow weir 15 overflows to the biological contact oxidation zone 5, through the aeration system 17, the sewage is fully contacted with the biofilm on the filler 16 in the biological contact oxidation zone, the organic pollutant...
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The invention discloses an integrated combined-type rural domestic sewage treatment device, and belongs to the technical field of environmental protection and wastewater treatment devices. The integrated combined-type rural domestic sewage treatment device comprises a bar screen area, an anaerobic sedimentation area, a biological contact oxidation area, a secondary sedimentation area, a clear water area and a constructed wetland system, wherein in the bar screen area, bulky feculences in the domestic sewage are intercepted, the intercepted sewage flows to the anaerobic sedimentation area automatically for sedimentation; the supernatant fluid after the sedimentation overflows to the biological contact oxidation area so that the organic contaminants in the water can be decomposed; then the effluent is subjected to sedimentation in the secondary sedimentation area; and the supernatant fluid after the sedimentation passes through the clear water area to the constructed wetland system and is discharged after reaching a standard. The sludge of a secondary sedimentation tank is treated by an automatic refluxing device, and biological sludge is returned to the anaerobic sedimentation area at the front end to perform nitrification and denitrification treatments. The integrated combined-type rural domestic sewage treatment device integrates and combines domestic sewage treatment devices, and has the advantages of strong impact load resistance, high organic substance removal efficiency, high operating efficiency and the like, saves 20 to 30 percent of floor area, reduces 20 to 30 percent of the investment cost, and is convenient to manage.
Description
technical field [0001] The invention relates to an integrated and combined rural domestic sewage treatment device, which is used for the treatment of rural domestic sewage and belongs to the technical field of environmental protection and waste water treatment devices. Background technique [0002] At present, for the decentralized non-point source pollution treatment of rural domestic sewage, most of the domestic sewage treatment devices produced and used in my country are mainly for the removal of organic matter. With the increase of nitrogen and phosphorus pollution in surface water bodies such as lakes, reservoirs and offshore , eutrophication is becoming more and more serious, and it is very important to remove nitrogen and phosphorus in decentralized sewage treatment plants. Secondly, most of the effluent indicators of domestic sewage treatment plants currently used at home and abroad can only meet the "Comprehensive Wastewater Discharge Standard" (GB8978 -1996), occupyi...
Claims
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IPC IPC(8): C02F9/14
Inventor 徐亮
Owner 江苏江大环境工程有限责任公司