Water and water purification technologies

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REMOVING FLUORINE FROM WATER BY TITANIUM AND ALUMINIUM COAGULANTS

A.V.Mamchenko, N.G.Gerasimenko, T.A.Pahar

Institute of Colloid and Water Chemistry,

NationalAcademy of Sciences of Ukraine, Kiev, Ukraine

e-mail: n_gera_56@ukr.net

Comparative effectiveness of  titanilsulphate, aluminiumsulphate (AS), based sulphate (BSA 2,0 ) and based chloride (5/6 BCA) of aluminium depending on pH (8,0 – 6,3) and alkalinity (5,0 – 2,0 mmol/L) under removing fluorine from water has been studied. The fulfilled researches indicate about the higher effectiveness of BSA 2,0 and 5/6 BCA in  comparison with SA under removing fluorine as well as special aimed decreasing pH and alkalinity that provide the decreasing of reagent expenditures and the obtaining water of necessary qualities. It is shown that the using of titanilsulphateunder fluorine removing is perspectiveless.

Key words: defluorination of water, coagulants, pH, decreasing of reagent expenditures.

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28.09.2010 at 12:51 pm