METHOD FOR DETERMINING MAXIMUM GEOCHEMICAL CAPACITY OF SOIL AND GROUND WHEN COMPACTED AT LANDFILL SITES Russian patent published in 2021 - IPC G01N33/24 

FIELD: ecology.

SUBSTANCE: invention relates to environmental protection. It can be used for assessment of environmental state of soil and grounds on landfills with subsequent prediction of change of potential of geo-accumulation of heavy metals in compaction of soil and grounds. Described is a method of determining maximum geochemical capacity of soil and grounds during compaction thereof at landfill sites, comprising determining the quantitative distribution of contaminants in the soil profile or wastes taking into account density of separate layers, characterized by that specific weight of solid phase of soil, density of soil is determined, then volumetric potential contamination is determined as difference between content of pollutant in cubic meter of solid phase of soil and in the same volume of natural additions taking into account pore space due to soil dehydration, which enables to determine which maximum possible amount of pollutant when compacted in kg/ha in a meter layer of soil or wastes can be additionally placed in a given volume of soil or wastes at known contaminant content, by formula V_l = (Sw−DS)*Ts*10⁴ C/10³, where l is potential volume contamination, in kg/ha in layer (0–100 cm); Sw is specific weight of soil (t), t/m³; DS is density of soil (ground), t/m³; Ts is thickness of soil or ground layer, m, 10⁴ is number of square meters per 1 hectare, C is concentration of contaminant, g/t of soil, 10³ is conversion coefficient of pollutant mass in kg.

EFFECT: quantitative assessment of actual contamination with heavy metals of a given volume of soil and ground, as well as a quantitative prediction of the potential maximum content (location) of contaminants using a relatively stable for a particular soil and ground parameter - specific weight.

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