Ion-exchange separation of anions for the development of low-waste technologies for water demineralization
Journal Title: Metallurgical and Mining Industry - Year 2017, Vol 9, Issue 6
Abstract
Discharges of a huge amount of insufficiently purified mine waters lead to a significant deterioration of the ecological situation, as a result of which, there is a quantitative and qualitative depletion of water resources. Therefore, the most rational solution to this problem is the creation of low-waste technologies for the purification of mineralized waters.This will increase the efficiency of using local water resources and also solve the problem of providing enterprises and the population with qualitative water. The objective of the work was to study the processes of ion-exchange separation of chlorides and sulfates on a highly basic anion AB-17-8 in Cl-form. The carried-out researches have shown that efficiency of separation of chlorides and sulfates increases with increase in height of an ion exchangerlayer and decrease in water salt content. The processes of regeneration of anion exchanger have been studied and a method of their recovery for reusing has been developed.A principal technological scheme for the demineralization of mine and sewage water is proposed, which allows obtaining water with mineralization< 1 g/dm3, hardness < 2.3 mg-eq/dm3for complete recycling of generated wastes.
Authors and Affiliations
Inna Trus, Hanna Fleisher, Viktoria Vorobyova, Olena Hlushko, Mukola Gomelia
Keywords
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