Recent developments in water treatment in France

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Abstract
Source water near Paris, France, has deteriorated in recent years causing a revaluation of traditional chemical treatment of drinking water. Good results have been obtained by using natural biologic purification in conjunction with activated carbon, thus reducing the amount of chemical reagents needed and also improving the taste of the water. Ozone is used before filtration, before activated carbon filtration, and after carbon filtration. The cost of these improved techniques is only about 6 percent more than traditional chemical reagent techniques.

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