Determination of sodium form water softener breakthrough

Details Determination of sodium form water softener breakthrough Determination of sodium form water softener breakthrough

C - Chemistry, Metallurgy

02

F

362/27

C02F 5/00 (2006.01)

Patent

CA 1052919

Abstract Detection of exhaustion of sodium form water softeners is accomplished by subjecting sample of the outflow from a water softener to reverse osmosis in order to separate monovalent (so- dium) and divalent (hardness or magnesium and calcium) ions dif- ferentially from the outflow and measuring conductivity before and after the reverse osmosis. The two conductivities are com- pared in a ratiometer or differential device. After the softener becomes exhausted the divalent ion concentration in the outflow increases. Consequently the conductivity ratio changes to indi- cate that the water softener has become exhausted.

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