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UDC 628.161.2:546.34:544.726.3

Fedorova S. V., Kryzhanovskii A. N.

Lithium removal from underground water by ion exchange method

Summary

Supplying the population of the Sakha Republic (Yakutia) with drinking water in harsh environment has been a crucial task. In many Yakut communities there is a need in involving underground water in domestic water supply systems. One of the specific features of the chemical composition of subpermafrost water of the Yakut artesian basin is the presence of lithium in the concentrations significantly exceeding the maximum permissible values. This complicates considerably using this water for drinking water supply. Lithium removal from different solutions and brines for industrial use is reported; whereas the information on water treatment for domestic water supply that provides for lithium concentration decrease is lacking. The results of experimental studies of subpermafrost water treatment in Central Yakutia by ion exchange method that prove the efficiency and possibility of using sodium cycle for decreasing lithium concentrations in subpermafrost water are presented.

Key words

ion exchange , subpermafrost water , lithium , sodium cycle