Ion exchange process for desalination

Details Ion exchange process for desalination Ion exchange process for desalination

1978-08-02

1980-05-13

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

521 26, B01D 1506

Patent

active

042027373

ABSTRACT:
An ion exchange process for desalination wherein a thermally regenerable ion exchange resin having weakly acidic free acid groups and weakly basic free base groups is carbonated, for example by contact with an H.sub.2 CO.sub.3 solution, whereby the free base groups are converted to a carbonate form. The conversion may be effected either prior to or simultaneously with contact between the resin and the solution to be desalinated. Both fixed bed and continuous or semi-continuous resin systems are usable. The process maintains the desalination capacity at a high level while providing effective desalination.

REFERENCES:
patent: 3077479 (1963-02-01), Luten et al.
patent: 3645922 (1972-02-01), Weiss et al.
patent: 3660282 (1972-05-01), O'Brien
patent: 3691109 (1972-09-01), Larsen
patent: 4087357 (1978-05-01), Barrett et al.

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