Copper ion swimming pool system
- Copper ion swimming pool system
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Copper ion swimming pool systems use a low voltage current across copper bars (solid copper, or a mixture of copper and zinc or silver) to free copper ions into the flow of pool water to kill organisms such as algae in the water and provide a "residual" in the water. Better systems also use titanium plates to produce oxygen in the water to help degrade organic compounds. One of the best known copper ion/oxygen swimming pool systems is the Ecosmarte Pool System, which is the original, but there are several others that have come out such as Silkwater and Chlorfree.
In studies, copper in drinking water has shown to injure E Coli bacteria.[1]
Ionization for water was developed in 1967 by Honeywell for NASA missions to the moon.
With these systems, the PH of the water should be kept around 7.0, which is a bit lower than a chlorine pool. CO2 (pressurized carbon dioxide gas) can be used on some of these systems to control pH. The advantage of carbon dioxide is there are no harmful fumes.
One disadvantage to some people is the copper ions can stain white pool plaster with a sky blue marble effect . . . however, if silver is mixed in with the copper, a darker black like effect can occur so pure copper electrodes are the best in this respect.
The suitability of using heavy metal ions in swimming pools to control algae has been disputed. [2]
References
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