Khyzhnjak O. Improvement of technology of preparation of potable water with use of highly effective coagulants and bactericidal floculant

The work deals with developing of scientific bases of technology of preparation of potable water using basic sulphates of aluminium, especially dihydroxosulphate of aluminium (DGSA) and floculant - mixes of salts polygexamethylenguanidine (PGMG) as coagulants. Optimal parameters of synthesis of the basic sulphates of aluminium and dihydroxosulphate of aluminium are determined. Practically received results are confirmed by theoretical calculations with use of mathematical processing. It is ascertained, that use of the basic sulphates and dihydroxosulphate of aluminium considerably intensifies water treating process on physical and chemical indicators. Quantity reduction in the cleared water of residual aluminium is an especially important factor. Disinfecting efficiency floculant polydiallildimethylammonium chloride and a mix of salts PGMG (Valeus) and their compositions with coagulants is investigated. A composition "floculant+coagulant" with high disinfecting effect and effective coagulational abilityis fixed. The composition is "DGSA+Valeus". The hardware-technological scheme of preparation of potable water with composition use " DGSA+Valeus " is offered.