Peculiarities of Recultivating the Ash Dump of Power Station-1 in the City of Khabarovsk

Abstract:

The article presents the results of the research work on the peculiarities of recultivation of the ash dumps of power station No1 (PS1) in the city of Khabarovsk. The research showed that the climatic conditions of the region promote the dust dispersal of toxic agents from the surface of the ash dump. The pollution of the air basin here can be attributed to the extremely high level of pollution (EHP), the priority pollutant is the dust containing heightened concentrations of heavy metals (Pb, Mn, Cu, Cr, Co, Ni, Cd). As a result it leads to the deterioration of the population’s health, especially to the high level of respiratory organs diseases. The research of the sprouting of the herbaceous plants (mixture of timothy-grass, clover and mustard) on prepared model soils showed their healthy growth. The ash chemical composition was studied. It showed high concentration of toxic chemical elements (Hg, Be, Sr, Cd, V, Th, 40K, Cr, Mb, AS, Sb,Se, Te, Pb, Ni, Co). The migration intensity of heavy metals ions into the plants was analyzed. On the basis of the experimental research the optimum composition of the substrate was revealed and recommended for recultivating the ash dump of PS1, namely: soil+sand+ash. Climatic conditions of the Khabarovsk Krai do not permit to recommend the sand+ash substrate for recultivation because of strong winds.

• Periodical: Advanced Materials Research (Volume 1051)
• Pages: 444-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1051.444
• Online since: October 2014
• Authors: A.A. Suprunova, L.T. Krupskaya, T.G. Borzenkova
• Keywords: Ash Dump, Heavy Metal, Migration, Recultivation, Substrate, Toxic Chemical Elements

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