Ключевые слова: морская вода, умягчение, опреснение, мембранная технология, электродиализ, обратный осмос, самоподдерживающийся процесс, солепродукты, экология.

The problems of sea water desalination by combination of electromembrane and reverse osmosis technologies on the base of self-sustaining processes excluding application of reagents at a softening stage of sea water are considered. Deep preliminary softening of initial sea water provides an opportunity of its desalination with the production of the highly concentrated brine. The part of this brine is applied for regeneration of cation-exchangers at the stage of softening and the remained amount is processed with commodity salt products manufacture. The offered approach solves an ecological problem of salination of water in coastal areas and raises economic parameters of desalination processes. The theoretical analysis of softening processes is carried out, the requirements for cation-exchange materials are formulated. The successful approbation of technology on the pilot module with 10 l/h capacity confirmed validity of the offered concept of desalination technology. The technological project of trial installation with capacity of 2400 cub.m/d is developed.

Keywords: sea water, softening, desalination, membrane technology, electrodialysis, reverse osmosis, self-sustaining process, salt products, ecology.