Description

Backwash sand filter is made of cylindrical double-tank, it adopts the filter mediums such as silica sand and scree with the grain size of 0.**1.0mm, the filter accuracy can be changed by alternation of grain of sand. Clean water in the double-tank directly backwashes the impurities in the other tank, and so making it the most efficient filter at present to dispose of the organic and inorganic impurities in the water, and generally applied for filtering the surface water (such as river and pond water). Sand filter can be used in combination with screen filter.