1) industrial effluent of domestic sewage and factory and mining enterprises in small and medium-sized towns, especially where intermittent discharge and flow change are large.
2) the water and water quality is required, such as scenic spots, lakes and estuary, not only to remove organic matter, but also to remove phosphorus and nitrogen in water to prevent eutrophication of rivers and lakes.
3) where water is scarce.
The SBR system can be processed after biological treatment without adding facilities to facilitate water recycling.
4) the land of tension.
5) modification of the continuous sewage treatment plant.
It is very suitable for the treatment of small amount of water, intermittent discharge of industrial wastewater and the treatment of scattered point source pollution.