METHOD FOR BIOLOGICAL SOILS RECLAMATION Russian patent published in 2017 - IPC A01B79/02 

FIELD: ecology.

SUBSTANCE: method consists in application of ground clay according to the invention, the clay is preliminary analyzed for toxicity, and according to its results, clay waste is uniformly mixed with a peat-sand mixture in the proportion (40-60):(60-40)%, mineral fertilizers and seeds of perennial frost-resistant herbs, for example ryegrass, and applied to the surface as a layer of 8 to 10 cm on the planned drained area after snow cover melting in spring. Gray dense clays with interlayers of Upper Kotlin subsuite sandstones are used as clay. When using this method, ecological clean waste of excavation works for laying deep underground tunnels is used.

EFFECT: costs of the biological stage of reclamation are lowered, the protective properties of the reclaimed surfaces are increased from the physical impact and a stable fertile soil layer is created.

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