The decontamination principle of integrated sewage equipment mainly includes the comprehensive application of physical, chemical and biological methods.

       Physical decontamination: Physical decontamination in the equipment mainly includes treatment processes such as grilles and sedimentation tanks. The grille filters the sewage entering the equipment through a metal mesh to remove larger suspended solids and impurities and avoid affecting subsequent treatment equipment. The sedimentation tank uses gravity sedimentation to precipitate suspended solids and some organic matter in the sewage to the bottom, thereby achieving preliminary removal of pollutants.

       Chemical decontamination:Integrated sewage equipmentChemical decontamination mainly adopts the method of adding chemicals, including coagulants, defoaming agents andpHregulators, etc. Coagulants can aggregate suspended solids and colloidal substances in sewage into larger particles to facilitate subsequent biodegradation and filtration; defoaming agents can remove bubbles in sewage and avoid their impact on equipment;pHregulators can adjust the pH of sewage to ensure the effect of subsequent treatment.

       Biological decontamination: The biological decontamination in the equipment mainly includes two biological treatment processes: aerobic and anaerobic. Aerobic biological treatment mainly converts organic matter into harmless substances such asCO2and water through the oxidative degradation of organic matter by microorganisms. Anaerobic biological treatment mainly converts organic matter into renewable energy such as methane through anaerobic fermentation of organic matter by microorganisms.

       Integrated sewage equipment采用多种处理工艺的综合应用，能够对污水中的各种污染物进行有效的去除，保障出水达到相关排放标准。