According to the principle of residential sewage treatment should be selected treatment effect is stable, less sludge production, energy-efficient approach. Cell systems of various types of buildings are generally built with septic tanks, so the septic tank should be combined with sewage treatment. Domestic and biochemical methods are generally used for domestic wastewater treatment, because the sewage BOD5/CODcr ≈ 0.5, biodegradability strong. Contact oxidation method has high volumetric loading, residence time is short, organics removal, simple operation and small footprint advantages. To this end, we chose the technology is mature, reliable contact oxidation. Residential district sewage process sewage treatment process equipment based residential treatment equipment sewage into water bodies function varies, commonly used treatment methods are: septic tanks, primary treatment (primary sedimentation tank), and two biological secondary treatment level processing, then reuse and other sterile. Due to the smaller residential sewage water treatment, management level is not high, so in the selection process design no less sludge sludge treatment process as much as possible, in order to prevent secondary pollution caused by improper handling of sludge. Currently, more commonly used wastewater treatment process are: 1, adjusting pool water → → → primary sedimentation tank biological contact oxidation pond effluent → → secondary sedimentation tank, biological contact oxidation is the most widely used method, the main advantage is the short residence time, easy to hang the film, especially for equipment of the buried building much environmental companies and users of all ages, but because of maintenance problems and equipment corrosion and other aspects of management, the recent application is limited. But if built underground reinforced concrete forms, set the channel for maintenance personnel, this approach has a large underground construction market in the area of ??water treatment, but it is generally treated this way smaller, less than the daily amount of sewage discharged hundreds of tons more cell ideal. For the thousands of tons of residential waste water treatment, construction methods recommended ground, biological treatment can be contacted partial oxidation, can also be used or modified CASS SBR technology, aeration recommend a low-noise fan or underwater aerator. 2, adjusting pool water → → → Filter → coagulation and sedimentation of water, less demanding on the degree of processing, and the small amount of water, we can use this technology, with a small footprint, low odor, easy to manage and so on. Also, before hydrolysis acidification plus aerobic biological treatment, help to reduce energy consumption and improve overall removal efficiency of the system. Living quarters usually have a larger green area, if the wastewater treatment and reuse for watering green areas, roads, car wash, disinfect or other supplements should be added after the above measures effluent. Residential sewage treatment several commonly used treatment process: 1, sewage grill → → → lift pump regulating pond aeration tank → → → effluent settling tank sludge return ↑ ← ↓ 2, regulating sewage tank → → → grill lift pump → contact oxidation pond effluent 3 → → sedimentation tank, sewage grill → → → enhance regulation pool pump filter → → → coagulation and sedimentation of water (physical and chemical methods) dosing ↓ 4, regulating sewage tank → → → grill lift pump → SBR pool or water dosing CASS → ↓ 5, adjusting pool water → → → grille enhance contact oxidation pond pump → → → coagulation and filtration water reuse process: Biological treatment of water and then usually after coagulation and filtration and disinfection process starts when To consider setting homogenized pool, this is because the cell changes in water quality and quantity than the big city sewage treatment plant. Are generally located in the grille of the pool later. Physicochemical and biological treatment to remove pollutants core. www.yuanbao2.com integrated wastewater treatment equipment, buried integrated wastewater treatment equipment