FIELD: chemistry.
SUBSTANCE: invention can be used to purify water from different types of contaminants. The first step of the method involves mixing initial components - aluminium sulphate, anhydrous sodium sulphate, sodium hydrogen sulphate or aluminium sulphate, sodium hydrogen sulphate, or aluminium sulphate, anhydrous sodium sulphate and 96% concentrated sulphuric acid. At the second step, monosil with modulus 1.5-3.0 is added to the obtained mixture while stirring, with the following ratio of components, respectively, pts.wt: 3.4:2.1:1.4:1, or 3.4:1.4:1, or 3.4:2.9:0.6:1. The obtained crystalline product has high stability and effectiveness, long storage life of up to 12 months and can be easily transported. Concentration of active components in the dry powder of the flocculant-coagulant is equal to 57-75%.
EFFECT: high efficiency of purification.
3 dwg, 3 ex
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