Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1992-12-11
1994-10-11
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210686, 210777, 210778, C02F 142
Patent
active
053544765
ABSTRACT:
This invention relates to a method for treating water by using a precoated filter.
Since the method of the present invention utilizes ion-exchange fibers having an ion-exchange polymer and a reinforcing polymer as the precoating material together with a cation-exchange resin powder and an anion-exchange resin powder, the method made it possible to prominently prolong the lifetime of the precoating material and to improve the quality of the treated water.
The method for treating water of the present invention is suited for the treatment of water to be used in, or waste water from atomic power plants, steam power plants, pharmaceutical companies and the like.
REFERENCES:
patent: 3080971 (1963-03-01), Hutto et al.
patent: 4007301 (1977-02-01), De Martino
patent: 4190532 (1980-02-01), Halbfoster
patent: 4313832 (1982-02-01), Shimizu et al.
Abstract No. 93481Q, Chemical Abstracts, vol. 99, No. 12 Sep. 12, 1983, Columbus, Ohio, U.S.
Ito Tsukasa
Kubo Nami
Mori Shigeki
Noyori Masaru
Cintins Ivars
Miller Austin R.
Toray Industries Inc.
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