METHOD FOR DETOXIFICATION OF SOIL CONTAMINATED WITH OIL AND OIL PRODUCTS Russian patent published in 2014 - IPC B09C1/10 C12N1/00 A62D3/00 

FIELD: ecology.

SUBSTANCE: soil contaminated with oil products is detoxified by adding a natural sorbent with a biopreparation until a given concentration of the contaminant in the soil is achieved. The sorbent used is glauconite and the biopreparation used is polyculture. Before adding the sorbent with the biopreparation, concentration of the contaminant is measured, the volume of sorbent is determined and a shielding intermediate layer of biohumus is placed at the boundary where the contaminant penetrates the soil in the lower part of the contaminated layer. Concentration of the contaminant is determined layer-by-layer. The number of layers of contaminated soil with concentration of the contaminant in the layer differing from each other by at least double is not less than two. The contaminated soil is moistened after distributing the volume of sorbent with the biopreparation, effective microorganisms and fermented compost on the surface of the contaminated soil while simultaneously mixing. A water-swelling polymer is also added to the contaminated soil. Temperature conditions for activating biological processes are maintained by adding organic materials to the soil, wherein the volume of said organic materials in the shielding intermediate layer should be at least double that in the contaminated soil.

EFFECT: high efficiency and faster detoxification.

1 tbl