Toxicity Assessment of Contaminated Soils of Solid Domestic Waste Landfill

18th International Scientific Symposium in Honour of Academician M. A. Usov: Problems of Geology and Subsurface Development

Pasko, O.A.^1 ; Mochalova, T.N.^1

Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Contaminated soils;    Domestic wastes;    Dynamic patterns;    Living organisms;    Operating periods;    Synergetic effect;    Toxicity assessment;    Waste landfill;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/21/1/012044/pdf
DOI  :  10.1088/1755-1315/21/1/012044

来源: IOP

【 摘 要 】

The paper delivers the analysis of an 18-year dynamic pattern of land pollutants concentration in the soils of a solid domestic waste landfill. It also presents the composition of the contaminated soils from different areas of the waste landfill during its operating period. The authors calculate the concentrations of the following pollutants: chrome, nickel, tin, vanadium, lead, cuprum, zinc, cobalt, beryllium, barium, yttrium, cadmium, arsenic, germanium, nitrate ions and petrochemicals and determine a consistent pattern of their spatial distribution within the waste landfill area as well as the dynamic pattern of their concentration. Test-objects are used in experiments to make an integral assessment of the polluted soil's impact on living organisms. It was discovered that the soil samples of an animal burial site are characterized by acute toxicity while the area of open waste dumping is the most dangerous in terms of a number of pollutants. This contradiction can be attributed to the synergetic effect of the polluted soil, which accounts for the regularities described by other researchers.