Method and apparatus for purifying water and for maintaining...

Details Method and apparatus for purifying water and for maintaining... Method and apparatus for purifying water and for maintaining...

C - Chemistry, Metallurgy

02

F

C02F 1/42 (2006.01) C02F 1/66 (2006.01) C02F 1/72 (2006.01)

Patent

CA 2210426

The invention relates to a method and apparatus for purifying and maintaining the purity of water in a swimming pool by initially feeding into the pool water treated in an ion exchanger to render it acidic and hardness-free. lime water consisting of a clear and saturated aqueous solution of white lime or white lime hydrate being thereafter added to provide a time-carbonic acid equilibrium, at least some of the acidic and hardness-free water being recirculated over a body of crushed limestone to establish a pH of not less than 7. Carbon dioxide and oxygen may also be added.

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