FIELD: process engineering.
SUBSTANCE: invention can be used for desalting of sea, hard and/or contaminated water by direct osmosis desalting. To this end, contaminated feed solution with water at first osmosis pressure is forced through semi-permeable diaphragm to discharge side that has the flow of carrier solution with second osmosis pressure on discharge side of semi-permeable diaphragm. Diluted discharge solution is heated to agglomerate discharged diluted substance to two-phase flow containing liquid phase of agglomerated dissolved substance and liquid water phase. Then, agglomerated dissolved substance is separated to get enriched flow to be cooled to obtain cooled single-phase water-rich flow to be subjected to removal of residual dissolved substance to produce purified water.
EFFECT: higher quality and desalting and purification.
23 cl, 4 dwg, 2 tbl
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