FIELD: chemistry.
SUBSTANCE: method of treating natural water includes oxidation, neutralisation and two-step filtration. Oxidation with simultaneous transfer of impurities into a dissolved state is carried out with carbonic acid solution obtained from saturating raw water with carbon dioxide. Neutralisation of the formed compounds is carried out with calcium hydroxide solution with concentration of 1-1.3 g/l, followed by removal of the precipitate first in a settling tank and on a filter with a neutral charge, and then on a filter with a weakly basic charge.
EFFECT: invention enables to remove iron and manganese compounds, bicarbonates of alkali-earth metals, silicic acid and salts thereof and organic impurities from water, simplifies the water treatment technique and lowers the content of impurities to values which do not exceed the maximum allowable concentration.
3 cl, 1 dwg, 1 tbl
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