sand filter

sand filterSand Filters are used world over for water treatment. These filters are used in various industries for cleaning water. In sewage units, sand filters are used as a final polishing stage. In sand filters the residual suspended materials and bacteria are trapped by the sand.		FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
The sand filter also provides physical matrix for bacterial decomposition of nitrogenous material like ammonia and nitrates, into nitrogen gas. For different application there are different types of sand filters. Usually there are three types of sand filters used:Rapid (gravity) Sand FiltersUpflow Sand FiltersSlow Sand Filters