METHOD OF BIOLOGICAL RECLAIMING OF SOILS POLLUTED BY OIL AND OIL PRODUCTS Russian patent published in 2008 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: invention concerns environmental technologies and can be applied in reclaiming of soil fertility. The method involves double fertilisation of a polluted landsite, soil loosening and application of water solution of oil decomposing bacteria. Manure with humidity of 60% and over is used as the fertiliser at the ratio of 30-40 tons per hectare. It is introduced first during subsurface loosening at the depth of 27-30 cm, and next over 5-7 days. The composition is produced by composting sapropel, manure and unpolluted soil; before application it is mixed with shred bird feathers. Feathers are preliminarily treated in water solution of electric activated water for at least 30 minutes. Rhodococcus sp. MFN bacterium strain, cultivated in nutrient solution, is used as oil decomposing bacterium. It identifies hydrocarbons of oil at the polluted landsite as a source of carbon. Water solution of Rhodococcus sp.MFN bacteria is introduced at latest in 48 hours after the composition. In 1.5-2 months the site is tilled with backset to the depth of 25-27 cm, the surface is leveled with heavy harrows, and annual or perennial grass is sown.

EFFECT: enables biological reclaiming of soils by sapropel utilisation.

7 cl, 2 ex