Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1997-05-06
1998-08-11
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210793, 210794, 210797, 210798, 210264, 210274, 210275, 210108, B01D 2446
Patent
active
057923590
ABSTRACT:
A backwash sealing shoe is provided for a filtration system including a tank having an undivided filtration bed and a plurality of side-by-side headers within the bed, each header in communication with a respective port in a wall of the tank. The sealing shoe includes a hydraulic section including an opening surrounded by a seal and adapted to sealingly engage the wall in surrounding relationship to at least one of the ports; and at least one blocking section adjacent the hydraulic section on one side thereof and including a plate surrounded by a seal and adapted to sealingly engage the wall in surrounding relationship to at least one adjacent port to thereby block flow from the tank through at least one adjacent port during a backwash operation.
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Nessler Cynthia L.
U.S. Filter Corporation
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