FIELD: chemistry.
SUBSTANCE: invention relates to reagent methods of treating dairy industry waste water containing organic compounds in high concentrations besides inorganic compounds. The method is realised by neutralising water with lime milk to pH 6.0-8.5 and an anionic flocculant based on polyacrylamide with molecular weight of not less than 15·106 and in amount of not less than 0.01 mg/l is added. The precipitate is separated.
EFFECT: method increases degree of purity of waste water with high concentration of fat and protein to up to 99%.
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