FIELD: chemistry.
SUBSTANCE: invention relates to water purification by crystallisation and can be used in everyday life, food industry and medicine. The water purification apparatus includes a temperature-controlled heat-exchange vessel 1, means of feeding source water for purification and means 2 of draining ice water and liquid concentrate of contaminants, means 3 of cooling and freezing water and means 5 of melting ice with cooling 4 and heating elements 6, a control unit 7 connected to the means of feeding source water for purification and draining ice water and liquid concentrate of contaminants 2 from the heat-exchange vessel 1 and means of cooling and freezing water 3 and melting ice 5. The heat-exchange vessel 1 has a flat slit-type internal cavity or an annular slit-type cavity 15, and one of the walls of the heat-exchange vessel 1, which is free from the cooling 4 and heating elements 6, is made of transparent material and has one or more internal air cavities 17.
EFFECT: invention improves the quality of water purification and enables to monitor the purification process.
3 dwg
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