Application scenarios：
It is mainly used for advanced wastewater treatment and water purification, removing suspended solids, turbidity, phosphorus and partial organic matters. It is applicable to municipal wastewater upgrading, reclaimed water reuse, industrial wastewater treatment, drinking water pretreatment and other scenarios.
Structure&Principle：
The equipment consists of a tank, filter media, sand lifting and washing device, water distribution and collection system, etc. Raw water is filtered from top to bottom, and pollutants are intercepted by the filter media. The air-lifting device at the bottom continuously lifts and cleans the dirty sand, and the clean sand falls back to the filter layer. Filtration and cleaning operate simultaneously and continuously to achieve water purification.
Main Features：
1. High flexibility, enabling accurate selection according to process requirements and reducing investment costs.
2. Matched process parameters of the system, low energy consumption and lower operating costs.
3. Reliable mechanical performance and strong process stability.
4. Can be designed as single tank or multiple tanks, square or circular, steel tank or concrete tank.
