POLLUTED LAND DETOXIFICATION METHOD Russian patent published in 2007 - IPC B09C1/08 G21F9/28 

FIELD: environmental protection.

SUBSTANCE: invention concerns lands polluted with various organic and inorganic pollutants such as heavy metals, petroleum products an the like, and can be used for detoxification of various-type lands, e.g. in cases of man-caused pollution of lands, sewage disposal plant sediments etc. containing various types of pollutants in different concentrations. Method is implemented by adding glauconite-containing sorbent to land until specified concentration of polluting substance in the land is achieved. Prior to addition of sorbent, type of pollutant and its concentration K₀ in polluted land sample is determined, after which concentrations K₁, K₂, K₃, and K₄ of polluting substance are measured for land-to-sorbent ratios 1:1, 1:2, 1:3, and 1:4, respectively, after which mass m_s of the sorbent required to be mixed with land polluted with preliminarily determined pollutant in concentration K₀ is determined to achieve desired concentration of pollutant K₃ in terms of following equation: ms = m_L*K₁/[K₃*(K₀/K₁ + K₁/K₂ + K₂/K₃ + K₃/K₄)₄], where m_L is mass of land polluted with preliminarily determined pollutant in concentration K₀, and thereafter polluted land is moistened and calculated mass of sorbent is spread across the surface of polluted land while simultaneously being mixed with polluted land.

EFFECT: increased accuracy in determining mass of sorbent required and sufficient to achieve required norms of concentration of polluting substance in ground and so to reduce consumption of the sorbent.

5 cl, 3 ex