Abstract
The expediency of mastering the systems for combined desalination of sea water based on the reverse osmosis method and thermal distillation method using the exhaust heat of power plants has been substantiated. The technology of Mg-Na-cation-exchange decalcification is proposed for preventing the sulfate scale formation. This technology provides for the regeneration of cation-exchange resin by the mixture of magnesium and sodium salts contained in the purge solution at the stage of thermal distillation of reverse osmosis concentrate. It has been shown that the conversion of the softened Caspian and Black Sea waters by using the combined desalination can be raised to the levels of 87.4 and 81.9%, respectively. The performed investigations were of the computational and analytical character.
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