1) Automatic control 2).Low cost,low noise 3)Carben steel,Stainless steel Sewage Treatment Plant EquipmentI. SummaryWith ... influent water quality is stable without producing sludge swell.3. The reaction tank utilizes the biological touch oxidation method and sludge ... restraint, sanatorium and hospital.2. Residence community, village and town.3. Station, air port, sea port wharf and ship.4. Factory ...