Used for the removal of suspended solids and solids in industrial sewage in industrial water, domestic water and municipal water supply systems that require effluent turbidity ≤5mg/L to meet drinking water quality standards. It can be used as pretreatment equipment in ion-exchange softening and desalination systems, as well as coarse filtration equipment for industrial water supply that does not require high water quality. Swimming pool circulating treatment system, cooling circulating water purification system, etc.