Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1986-06-20
1989-11-14
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204301, 210670, B61D 1506, B61D 1302, C02F 1342
Patent
active
048805130
ABSTRACT:
A method and apparatus for generating acid and base regenerant solutions by utilization of a bipolar membrane electrodialysis stack. A mineral-containing salt solution is continuously circulated through the stack to produce a partially demineralized salt solution, an acid solution and a base solution. The acid solution and base solution are continuously circulated through the stack to increase the concentration thereof. The circulating salt solution is controlled to maintain the salt concentration in the range of 2% to 25% and the pH in the range of 8-11. The concentrations of the circulating acid solution and base solution are controlled to maintain the concentrations thereof in the range of 0.2N to 3.0N. The concentrated acid solution and base solution are utilized to regenerate exhausted ion-exchange resins.
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Butterworth Donald J.
Davis Thomas A.
Niebling John F.
Starsiak Jr. John S.
The Graver Company
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