The Operation of Filters by Suction Method

Abstract

In this research the filtration process in water treatment plants was studied to increase the filtration rates in the sand gravity rapid filters. A model was designed with dimensions (60*60*225) cm with sand media of two layers . Seven experiments were done in this research for each case of filter media thickness,( which are five cases ) . Using new method of operation , involves the suction of water from the drainage pipes network through the sand media . In this method, the filtration velocity was Doubled, with filtration efficiency nearly to (92%).