C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/00 (2006.01) C02F 1/50 (2006.01) C02F 1/66 (2006.01) C02F 1/68 (2006.01) C02F 1/46 (2006.01)
Patent
CA 2745625
The invention relates to the control of pH in water where hydroxyl ions are being produced by adding to the water an amount of transition metal salt sufficient to bind with hydroxyl into a slightly soluble or insoluble reaction product, thereby removing sufficient hydroxyl ion from the water to lower the pH thereof. This technique is particularly suitable for pH control in pool or spa water that is sanitized using chemical or electrolytic chlorination, where the sanitation process causes the pH in the water to rise. The invention also relates to apparatus for dispensing water treatment materials to water, and to methods for controlling phosphate levels and algae in water. A pH controlling com osition is also claimed.
Coffey Richard T.
Harnden Robert
Haven Michael
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Zodiac Pool Systems Inc.
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