Filtering apparatus having positively buoyant and negatively buo

Details Filtering apparatus having positively buoyant and negatively buo Filtering apparatus having positively buoyant and negatively buo

1997-12-10

1999-08-03

Woo, Jay H.

Liquid purification or separation

Structural installation

Closed circulating system

210277, 210290, 210287, 2104162, 119260, A01K 6304, C02F 306

Patent

active

059320923

ABSTRACT:
An apparatus for filtering contaminated fluids is provided. In a filtering mode, contaminated fluid is introduced into a vessel housing a bed of positively buoyant particulate material and a bed of negatively buoyant particulate material in a spaced apart relationship. The contaminated fluid is passed through the bed of negatively buoyant particulate and through the bed of positively buoyant particulate. In a backwashing mode, a backwashing fluid is passed through the bed of positively buoyant particulate to flush particulate contaminants therefrom. The backwashing fluid is discharged from the vessel at a location between the bed of negatively buoyant particulate and the bed of positively buoyant particulate.

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Purex Triton Swimming Pool Systems catalog pages showing various filters, copyright 1995, PAC-FAB, Inc. (5 pages).

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