Water and water purification technologies

Scientific and technical news

CLEANING OF MINE WATERS FROM URANIUM WITH THE HELP OF CATIONIC FLOCCULANTS

U. Omelchuk 1, E. Rudkovskaya 1, N. Gomelya2,

1 – Sevastopol national university of nuclear energy and industry

2 – National technical university of Ukraine “KPI”, Kiev, Ukraine

e-mail: ruda_lena@mail.ru

In work the estimation of the efficiency of water purification from uranium cationic flocculants and coagulants such as RIKS-A0, Polvak-68, aluminium sulphate, ferrous sulphate (II). The processes of uranium-containing cleaning of mine waters depending on the type and dose of flocculants and coagulant, the effect of the Ph of the medium on efficiency of purification of water from uranium, developed terms of achieving full of water purification from impurities of uranium.

Key words: cationic flocculants, coagulants, Ph, containing mine water.

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13.09.2011 at 2:40 pm

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