Description
Integrated buried sewage treatment equipment usually adopts a combination of biological treatment and physicochemical treatment methods. First, the sewage passes through the grit chamber to remove larger suspended solids and impurities, and then flows into the regulating tank. In the regulating tank, the water quality and quantity of the sewage are evenly adjusted to provide stable influent conditions for subsequent treatment. Subsequently, the sewage enters the biological treatment unit, generally using technologies such as the activated sludge process or the biofilm process. During this process, microorganisms decompose the organic pollutants in the sewage into harmless substances such as carbon dioxide and water, achieving the removal of organic matter.
After that, the sewage treated biologically enters the sedimentation tank. Through the action of gravity sedimentation, the sludge and water are separated. Part of the settled sludge is returned to the biological sewage treatment unit, and the remaining sludge is discharged to the sludge tank for treatment. Finally, the supernatant of the sedimentation tank enters the disinfection tank. By adding disinfectants, pathogens such as bacteria and viruses in the sewage treatment system are killed to ensure that the effluent water quality meets the discharge standards.
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