Bactericidal agent treatment technology for urban sewage

Abstract

The invention discloses a bactericidal agent treatment technology for urban sewage. A device of the bactericidal agent treatment technology comprises an aerobic strain tank, an anaerobic strain tank,a grille, a regulating pool, a flocculation pool, an anaerobic reaction pool, an aerobic biological aerated filter and a methane recovery device. The bactericidal agent treatment technology comprisesthe following operation steps: preparing a culture medium; culturing anaerobic bacteria; culturing aerobic bacteria; culturing flocculating bacteria; expanding, strengthening, taming and culturing strains; adjusting the pH value of the sewage in the regulating pool through the grille; enabling the sewage to enter the flocculation pool and adding a flocculant; enabling the sewage to enter the anaerobic reaction pool and stay for 8 to 10 hours, stirring and recovering methane; enabling the sewage to flow into the aerobic biological aerated filter and pass through three-layer profiled fiber nylonfilter cloth; carrying out second-time filtration through gravity action, carrying out UV light sanitization, inspecting and then discharging; if the sewage does not reach the standard, returning thesewage to the anaerobic reaction pool. The bactericidal agent treatment technology has the advantages of good sewage treatment effect, no addition of chemical reagents and capability of avoiding secondary pollution; the ventilation volume, stirring amount, sewage flow and the like are low, and the discharge amounts of odor and residual sludge are o also low, so that energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a bacterial agent treatment process for urban sewage. Background technique [0002] The main pollutants of industrial sewage or municipal sewage are oxygen-consuming pollutants (carbohydrates, proteins, oils, lignin and other organic substances), toxic pollutants (inorganic anions, organic pesticides, etc.), inorganic pollutants (acids, alkalis, salts, etc. ) and pathogenic contaminants. Traditional sewage treatment methods include stirring, aeration oxidation treatment, anaerobic anaerobic treatment and sedimentation steps. Oxidation treatment and anaerobic treatment are essentially the process of microbial degradation of pollutants in water, usually natural bacteria or artificially added a small amount Bacteria, depending on the type of pollutants, some chemical reagents need to be added, and the precipitation process usually adopts natural standing or adding flocculant precipitat...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent (CN201810012965.0) is a wastewater treatment device that uses a mixture of anaerobic bacteria, facultative bacteria or aerobic bacteria as a microbial water purifier to treat sewage to achieve good sewage treatment effects, but the flocculant used It is an inorganic flocculant and an organic polymer flocculant, which may cause secondary pollution to the environment

Chinese patent (CN201611182630.0) is an industrial wastewater treatment process that uses a mixed bacterial agent to treat wastewater, but because the bacteria have not been domesticated, the ability of the bacteria to treat wastewater will be low, and the discharged wastewater will not meet the treatment standards.

Images