Filter media support and containment system

B - Operations – Transporting – 01 – D

Patent

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182/104

B01D 24/00 (2006.01)

Patent

CA 1109402

ABSTRACT OF THE DISCLOSURE The invention discloses an improved granular media filter of the type including a filter tank, means for dividing the tank into a plurality of cells, means within each cell for holding horizontal porous support plates, a bed of filter media on the porous support plates, influent means for delivering fluid to be treated to the top of the filter bed, filtrate receiving means in each cell below the support plates for receiving the treated fluid, an effluent channel for removing the treated liquid from the filter, port means for de- livering the treated liquid from each filtrate receiving means to the common effluent channel and backwashing means that cooperate with the port means to force a backwashing liquid back through the port means and filtrate receiving means and up through the filter bed for removing contaminants therein and thereon. The improvement comprises a prefabricated lightweight plastic cell system that divides the filter into the plurality of cells, provides horizontal support means for the porous plates, provides the filtrate receiving means and provides the port means. Filters using the lightweight prefabricated cell system of the present invention are less expensive and easier to install and have improved properties compared to prior art filters.

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