MANIFOLDED 3-STAGE WATER FILTRATION SYSTEM WITH HEAVY METALS REMOVAL

摘要

A manifolded 3 -stage water filtration system includes a deep sand filter assembly, a hydro-cyclone, and a filter and valve manifold assembly fluidly coupled together. The filter and valve manifold assembly includes a pre-filter fluidly coupled with the hydro- cyclone, a first hollow membrane filter fluidly coupled with the pre-filter, a second hollow membrane filter fluidly coupled with the pre-filter and the first hollow membrane filter, and a backwash system. The backwash system includes valves fluidly coupled with pipe sections, the pre-filter, and the first and second hollow membrane filters. Selected valves are closable so that clean water flows from one of the first and the second hollow membrane filters to the other of the first and second hollow membrane filters. Material occluding the other of the first hollow membrane filter and the second hollow membrane filter is removed by the clean water without adding contaminants to the filter.