Patent ID: 6224779
Filing Date: 2001-05-01
Classification: C02F

Abstract:
A process for inhibiting the growth of algae in a swimming pool system comprising a main body of water in the pool, maintained at pH 7.0 to 7.8 and containing chlorine in concentrations from about 0.3 to about 5 milligrams per liter, and a circulation system for removing a portion of the water from the main body of water in the pool, passing the removed portion of water through a filter to produce filtered water and returning the filtered water to the main body of water in the pool; which process comprises adding silver chloride onto the filter in the re-circulation system whereby the silver chloride is dissolved into the filtered water, the silver chloride being present in a quantity sufficient to provide a monovalent silver ion concentration in the body of water in the pool in the range of from about 0.01 to about 24 micrograms of silver per liter of water.