Sodium chloride and purified water are recovered by treating salt water that contains sodium chloride with an integrated reverse osmosis and electrodialysis system, which includes an efficiency-enhancing feature that is one or more of the following: the use of univalent anion and univalent cation selective...http://www.google.fr/patents/US7083730?utm_source=gb-gplus-shareBrevet US7083730 - Production of purified water and high value chemicals from salt water
Production of purified water and high value chemicals from salt water
