Method for treatment of aqueous solutions with ion exchange...

C - Chemistry – Metallurgy – 02 – F

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362/26

C02F 1/42 (2006.01)

Patent

CA 1148283

PATENT APPLICATION OF Hiroshi Shimizu, Toshiyuki Daigo and Hideo Azuma for METHOD FOR TREATMENT OF AQUEOUS SOLUTIONS WITH ION EXCHANGE FIBERS ABSTRACT OF THE DISCLOSURE Ion exchange fibers having a thickness of about 2-200 micrometers and a length more than twice the thickness are mixed as a slurry of cation, anion or mixed cation and anion exchange fibers, with or without powdered ion exchange resin of 2-250 micrometers diameter, to intertwine the fibers and immobilize any powdered resin present; the resins are coated from the slurry as a mat on to a filter support; liquids to be purified are passed through the mat until the ion exchange materials are exhausted; and the exhausted mat is stripped from the filter support by a backwash of liquid, gas or both.

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