Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1990-03-15
1992-02-18
Silverman, Stanley S.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210739, 210741, 210 961, 210140, 210190, B01D 2446
Patent
active
050891405
ABSTRACT:
In its broadest aspects, a method for the cyclic regeneration of a water softening system is disclosed. The water softening system comprises an exchange medium in a tank which is in fluid communication with a brine storage tank. This method comprises the steps of filling the brine storage tank with a second refill of softened water in a quantity sufficient to create sufficient brine for said exchange medium, said brine storage tank already containing a second refill of softened water from a later step of the method. The exchange medium is subjected to first backwashing with water flowing counter the direction of water flowing therethrough during water softening operations. Next, brine from the brine storage tank is passed through the exchange medium. Water then is passed through the brine exchange tank. The exchange medium thereafter is subjected to second backwashing with water flowing counter to the direction of water flowing therethrough during the water softening operation. Finally, the brine tank is refilled with a first refill of softened water to create brine in a quantity insufficient for completely brining the exchange medium.
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Brane Earl P.
Tucker David L.
Nessler Cynthia L.
Silverman Stanley S.
Wm. R. Hague, Inc.
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