Domestic sewage and fecal sewage in situ treatment process

Abstract

The invention discloses a technique method for in-situ treatment to domestic sewage and fecal sewage, which is characterized in: receiving said sewage and introducing into a reactor to form water environment of a constant water stage and inner loop comprising aeration- deposition- aeration- deposition aeration- deposition -disinfection (three aerations- three depositions- disinfection), adding JWEM composite bacterium into a receiving tank, adding microbe contacting material with coexisting of suspending phase and floating phase into a aeration oxidation ditch, multi-stage filtering-depositing, and sterilizing and decolouring. It can operate in new sewage treatment device and in modified anaerobic tank. The treated water can be used for afforestation and watering, and it eliminates a secondary pollution and realizes the sewage innocent treatment.

Description

technical field [0001] The invention relates to the biological treatment of sewage, which belongs to the technical method of in-situ treatment of domestic sewage and excrement sewage. Background technique [0002] The traditional treatment method of urban domestic sewage and fecal sewage is to enter the septic tank through the sewer, the feces are diluted, anaerobic fermentation, and partially sterilized, then enter the sewage treatment plant through the urban sewer network, and the water after secondary treatment is discharged into the nearby water body , the water after advanced treatment is reused. [0003] A septic tank is a concentrated structure of high-concentration organic wastewater, which can produce a large amount of hydrogen sulfide H during anaerobic fermentation 2 S, ammonia NH 3 , methane CH 4 And other harmful irritating gases, while indole, mercaptan, sulfide, skatole and other substances are produced. Odor pollution is serious, so it needs to be buried ...

AI Technical Summary

Problems solved by technology

[0004] At present, the national urban sewage treatment rate is only 40%, and 60% of untreated wastewater is directly discharged into nearby water bodies, causing eutrophication of water bodies, polluting groundwater and soil, spreading intestinal pathogenic bacteria, and directly endangering human health

[0005] Secondly, due to the slow development of the marketization and industrialization of sewage treatment in most cities, the actual economic benefits are minimal

The cost of sewage treatment in existing sewage plants is high, the sludge is not properly treated and safely disposed of, and the problem of secondary pollution is still becoming more and more serious

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