Community Research and Development Information Service - CORDIS

Drinking water-add a little salt

Water sterilisation methods abound in many forms, from aquifers and filtration devices to chemicals and ultraviolet treatments. Some devices are complex and expensive like tap water purifiers filled with large grain compounds and filters. Others are simple pills and chemicals-mostly chlorine based to assist in water purification. Few however require small battery power and a pinch of salt to run.
Drinking water-add a little salt
A newly devised water purification system has been developed that is cheap and simple to operate. Based on regular battery power but adaptable to either solar, photovoltaic sources or small, hand held generators, the device requires nothing more than table salt. No other chemical additives are necessary. It's production capacity can be as little as a single litre or a thousand litres per hour.

A further advantage is that these devices are small, portable and hence, easily transportable, which makes them excellent additions to emergency items for stricken areas where water is contaminated or in short supply. Drinking water supplies constitute a major concern in any drought or catastrophe stricken area and the importing of water purifiers constitutes a major statistical dilemma simply because power sources in such areas are often non-existent or down. This electrolytic chlorinator proves very advantageous for such conditions, and as a further consideration, the hypochlorite solution produced during the purification process is suitable for the disinfecting treatment of wounds, burns and regular washing.

Currently the developers have designed six such On Site Electrolytic Chlorinators (OSEC) in two category sizes-small to medium. They are looking for people interested in this secret know-how to help exploit the results.
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