DEVELOPMENT OF TECHNOLOGY FOR OBTAINING A MIXED COAGULANT FROM THE MAIN WASTE OF TITANIUM PRODUCTION
Keywords:environment, ferrous sulfate, oxidant, alloy, sulfation, mixed coagulant.
The study investigated the production of a mixed coagulant as a target product when utilizing ferrous sulfate, which negatively affects the technogenic load of the environment. Iron vitriol, in the form of large-tonnage acid waste of titanium production, is identified with a number of hazardous, producing environmental problems in places where enterprises for its manufacture are located. Due to the fact that in its composition it contains free sulfuric acid, solutions of which through underground waters fall on large areas of land, the structure of the soil changes. Contamination occurs with titanium and chromium ions, which are part of the waste. A common method of artificial clarification and discoloration of water, in which the color of water is increased, is the use of coagulants: aluminum sulfate Al2(SO4)3, aluminum chloride AlCl3, iron (II) sulfate FeSO4 and iron (III) sulfate Fe2(SO4)3, aluminum chloride pent hydroxide Аl2(ОН)5Сl, sodium aluminum oxide NaАlО2 and others, which form poorly soluble metal hydroxides Аl(ОН)3 and Fe(ОН)3 as a result of hydrolysis.
The aim of the work is to develop a technology for the utilization of ferrous sulfate to obtain a mixed coagulant that will reduce the technogenic load.
To achieve this goal, prototypes of a mixed coagulant with a different ratio of substances useful for coagulation (Аl2O3/Fe2O3) have been developed.
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