Manganese sand filter with manganese ore as raw material,is produced through crushing, screening and other processes. The appearance of rough brown or light gray, commonly used in drinking water’s filter devices to remove iron, manganese , water treatment effect is very good. (Note: MnO2 ≥ 35% either removing iron, but also manganese, MnO2 ≤ 30%,can only be used for remove iron from ground water).