B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/123
B01D 37/02 (2006.01) B01D 37/03 (2006.01)
Patent
CA 1142452
PURIFICATION OF LIQUIDS WITH TREATED FILTER AID MATERIAL AND ACTIVE PARTICULATE MATERIAL A B S T R A C T Disclosed is a method for removing impurities from a liquid, which method comprises passing the liquid through a filter bed comprising a mixture of fibrous filter aid material and an active particulate material. The filter aid material comprises 5 to 95%, by weight, of the bed, and has been treated with an electrolyte- type compound that produces a surface charge opposite to the normal surface charge by bonding to the surface of the filter aid material. The invention also pertains to the improved filter bed.
354601
Ecodyne Corporation
Meredith & Finlayson
LandOfFree
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