Features of the technogenesis processes at ash and slag waste disposal sites of the Kansk-Achinsk basin in the Yenisei Siberia
D. I. TSELYUK1,2, A. G. MIKHAILOV1, N. F. USMANOVA1, O. I. TSELYUK3
1Krasnoyarsk Scientific Centre SB RAS, Institute of Chemistry and Chemical Technology SB RAS, Krasnoyarsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia
3Krasnoyarsk Scientific Centre SB RAS, Krasnoyarsk, Russia
Keywords: coal of the Kansk-Achinsk basin, ash and slag waste, material composition, man-made waters, migration activity of elements, environmental monitoring
Abstract
During the operation of ash dumps, process water at the base of man-made massifs forms a man-made aquifer characterised by high mineralisation, hydrocarbonate-calcium-sodium composition, and a highly alkaline environment. Based on the presented studies of the aquatic environment and previously obtained data on the material composition of the solid phase of man-made deposits, the influence of the aggressive composition of waters in the man-made aquifer on the qualitative composition of ash and slag has been analysed. It is revealed that the ongoing disintegration of carbonates and aluminosilicates in the lower horizon of ash and slag massifs lead to the release of a wide range of hazardous substances. Technogenic processes have a significant impact on the qualitative composition of technogenic filtrate and the migration activity of water-soluble ingredients, which can significantly affect the state of the environment and require systematic environmental monitoring.
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