Classification of Filters Used for Purification of Water | Water Engineering
Filters are classified on the basis of: (1) The filtration rate; and (2) The driving force to overcome the frictional resistance encountered by the water flowing through filler. On the basis of filtration rate the filters are classified as: (i) Slow sand filters; and (ii) Rapid sand filters. The Rapid sand filters arc further classified as: (a) Rapid gravity filters; [...]