Potassium permanganate as pre-oxidant in a reverse osmosis water plant

Abstract

This paper deals with the use of potassium permanganate (KMnO4) as pre-oxidant in the reverse osmosis water plant of Marbella (Spain) during the summer of 1997. This facility usually treats shallow coastal marine raw water extracted at a depth of 10 m, containing a high amount of algae. These algae have caused heavy fouling rates in the reverse osmosis (RO) membranes and problematic operation of the plant. 8 g/m3 has greatly improved the process through elimination of algae and organic matter in the water.

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