| Abstrakt: |
Literature data of domestic and foreign research works concerning the use of iron-containing sediment obtained after drinking-water treatment as a sorption material for the removal of pollutants (various metal ions, dyes, and oil and the products of its processing) from aqueous media are summarized. Brief literature information on the composition of water-treatment wastes is given. Information is briefly presented concerning the studies on iron-containing water-treatment waste as a sorption material for As(III) and As(V), B(III), Cd2+, Cr(VI), Co2+, Cu2+, Hg2+, Mo(VI), Ni2+, Pb2+, Sb(V), Se(VI), and Zn2+ ions. It is shown that the water-treatment sludge containing iron compounds therein is an efficient sorption material for phosphorus compounds, including phosphate ions, which can be used to reduce eutrophication of natural aquatic reservoirs. Information is also presented concerning the potentialities of removing oil products from water treatment sludge taken from aquatic environments. It is shown that to provide an increase in the sorption characteristics for different pollutants through the treatment with the use of various chemical reagents is quite possible. [ABSTRACT FROM AUTHOR] |
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