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ANALYSIS OF POTENTIALLY HAZARDOUS GAS CONCENTRATIONS NEAR THE BERIKUL DUMP REBURIAL (KOMSOMOLSK, WESTERN SIBERIA, RUSSIA)

Sofiya Grakhova, S. B. Bortnikova, Nataliya Yurkevich, Aleksey Edelev

Abstract

The studied tailing dump is located on a hill in the urban village limits (Komsomolsk, Kemerovo region) and contained cyanidation wastes. There are the comprehensive school and the central street of the city below a hill, and the kindergarten on the opposite hill. Due to the easy availability of atmospheric oxidizing factors, the material of the bulk dumps changes very quickly, and, of course, seeps into the hill. Two types of streams interact with the material of the Berikul bulk dumps: infiltration water that seeps through the wastes and then flows to their foot, and seasonal surface streams that wash away the crust of efflorescence from their slopes. Infiltration drainage solutions are brown-red, strongly acidic salt (mineralization up to 40 g/L) sulfate-arsenate iron-zinc waters. The gas concentrations in the surface air layer at the Komsomolsk tailing dump were measured in early summer 2019. These measurements were taken after abnormal gas concentrations were detected at the school and kindergarten sites. In the 2000s and 2010s numerous cases of syncope among students were reported at the school. Which, however, no one attached importance. It turned out that the concentrations of CS2 and ?2?6S in these territories are very high, significantly higher than the maximum permissible concentrations in the air of the living area (MPC). Particularly noteworthy are the concentrations of carbon disulfide, a highly toxic gas of the second hazard class. Since the school is located at the foot of the log, which contains the tailing dump, and the kindergarten is located on the opposite slope of the valley, the substance from the tailing dump could be demolished by wind currents with the formation of anomalies. The article examines in detail the analytics of emanated gases at different points in the urban village Komsomolsk, as well as soil samples from vegetable gardens of local residents. Relations with the number of childhood diseases are determined.

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DOI resolver: doi.org/10.5593/sgem2020/5.1/s20.008

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