Main purpose

Civil and public buildings
Residential/commercial complex: Collect roof rainwater, discard it, filter it, and store it for greening irrigation, toilet flushing, and cooling tower water replenishment.
Public facilities: Landscape water replenishment and fire protection reserve water sources in subway stations, libraries, hospitals and other places need to be equipped with ultraviolet or sodium hypochlorite disinfection modules.

Industrial and Ecological Scenarios
Industrial park: Treat surface rainwater for production line cooling and equipment cleaning, and add oil separation modules in high pollution areas (such as parking lots).
Ecological restoration: Circulating purification of artificial lakes and landscape water pools, combined with microbial filters to maintain clear water quality, with no need to change water throughout the year.

Special fields
Agricultural irrigation: In rural rainwater harvesting projects, rainwater treated by biofilters meets the water quality standards for agricultural irrigation (SS ≤ 30mg/L).
Emergency water source: Rainwater stored in arid areas for emergency domestic use (requiring deep purification to meet standards)