Process for slow softening water

Details Process for slow softening water Process for slow softening water

C - Chemistry, Metallurgy

02

F

362/54

C02F 5/00 (2006.01) C02F 1/52 (2006.01) C02F 5/02 (2006.01)

Patent

CA 1056521

PROCESS FOR SLOW SOFTENING WATER Abstract of the Disclosure Water having calcium compounds therein is softened by admixing an alkaline compound therewith to change the calcium compounds inside a reaction zone into calcium carbonate. A finely divided crystalline material is mixed with the water being softened prior to the addition of a flocculating agent containing trivalent metal ions. The calcium carbonate produced in the reaction zone by sedimentation prior to addition of the flocculation agent is continuously withdrawn and recycled into the incoming water to be softened.

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