Process name Process characteristics Occupancy index (m2/m3)
Integrated wastewater treatment equipment Good quality of effluent, occupies a small area, complete sets of equipment, less sludge production, simple operation and management, can be reused, but requires a certain amount of operating costs and the corresponding management and maintenance 0.2-0.4
Living wastewater purification biogas digester + artificial wetland Deep treatment on the basis of domestic sewage purification digester treatment to meet higher water quality requirements, but covers a large area 2～4
Domestic sewage purification digester Higher removal rate of organic matter, low energy consumption, but the effect of nitrogen removal and phosphorus removal is poorer 1～3
Septic tanks (or renovation) Can reduce a certain amount of organic matter, but the effect of nitrogen removal and phosphorus removal is poorer 1～2
Service area:
Size Applicable technology Service area (10,000m2) or service radius (m)
Large-scale should give priority to domestic sewage purification biogas digester process, the effluent quality of the water required for the higher areas can be used in integrated wastewater treatment equipment process 3.5-35 (150-500)
Medium-sized should give priority to domestic sewage purification biogas digester process, the effluent quality of the higher requirements of the water can be used in integrated wastewater treatment equipment process. The areas with higher requirements for effluent quality can use integrated sewage treatment equipment process 0.3-3.5 (50-150)
Small domestic wastewater purification biogas digester process or septic tank 0.3 or less (less than 50)