METHOD FOR WATER SANITISATION
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United States of America Patent
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Issued Date -
Oct 25, 2012
app pub date -
Nov 30, 2010
filing date -
Nov 30, 2009
priority date (Note) -
Abandoned
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Abstract
The present invention provides a method for sanitising water in a swimming pool or the like, which method uses sources of ionic chlorine at significantly lower levels than conventional systems. The method comprises the steps of (i) forming, in the swimming pool water, an electrolyte solution containing from 500 ppm to 9000 ppm of a soluble magnesium halide salt, (ii) treating the electrolyte solution in an electrolytic halogenation cell to form an aqueous solution of hypohalous acid, and (iii) returning the water so treated back to the swimming pool. A mixture of magnesium, potassium and sodium chloride salts with small quantities of a soluble alkaline earth metal bromide, zinc halide, ascorbate, and/or zinc ascorbate may be particularly effective in the sanitisation process.
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