Dual And Multimedia Filtration

Filtration is a method of filtering sediments and particulates from water by applying pressurized feed water to push liquid through filtration media. At a certain period of continuous filtration, suspended solids entrapped in the media accumulate, reducing the efficiency of the filtration process and increasing the pressure drop. The pressure drop must be less than 1 bar to have an efficient filtration system. When the differential pressure exceeds the limit, it will require backwashing. Backwashing reverses the flow of water through the filter media to remove the particulates trapped in the filter bed. During backwash, the Multimedia Filter bed expands, clearing suspended solids to flow out of the top of the vessel. After backwash, the bed is settled for a few minutes and flushed with water as a final rinse, and then it is back to service