Method for recovering and treating brine from water softener reg

Details Method for recovering and treating brine from water softener reg Method for recovering and treating brine from water softener reg

1978-09-15

1980-06-10

Cintins, Ivars C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

210 34, 210 38A, B01D 1506

Patent

active

042073979

ABSTRACT:
Cation exchange water softeners may be regenerated and, then, the regenerant wastes (brine) recovered, treated, and recycled. The result is a closed system which is ecologically beneficial. The regenerant brine is captured in as concentrated a form as possible and then treated with a precipitant such as sodium or potassium carbonate or mixtures of sodium or potassium carbonate with sodium or potassium hydroxide. Calcium and magnesium compounds are precipitated and the supernatant contains sodium or potassium chloride. These are separated within the brine treatment tank, the precipitate being disposed of as a sludge or sludge cake and the supernatant being recycled to the water softener at the time of further regeneration.

REFERENCES:
patent: 3101316 (1963-08-01), Rose
patent: 3350292 (1967-10-01), Weinberger et al.
patent: 3528912 (1970-09-01), Popper et al.
patent: 3977968 (1976-08-01), Odland

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