METHOD OF PURIFICATION OF SOILS FROM UNDERGROUND POLLUTION BY PHENOLS Russian patent published in 2004 - IPC

FIELD: biological purification of soils. SUBSTANCE: the invention presents a method of purification of soil from underground pollution by phenols, that provides for irrigation of a soil surface over the center of the underground pollution by a suspension, containing a microorganism-biodestructor and biogenic elements, infiltration of the suspension in the soil and extraction of the underground pollutions by it, a liquid pumping-out from a water-bearing bed through the special wells and following purification from pollutions using an aeration filter and aeration by air (the pumped out air is purified from vapors of pollutions by the air filter). In the capacity of a microorganism - biodestructor in the irrigation liquid, in the aeration filter and the air filter the strain of bacteria - Aureobacterium saperdae 6-204 is used, and the nozzle of the aeration filter with a porosity of 0.4-0.9 is made out of inert materials (excelsior, peat). The method allows for 65 days to purify the soil from the underground pollution by phenols by more than 99 % without any overburden operations and excavation of the polluted underground soil up to the surface. EFFECT: the method allows within rather short period of time to purify phenol polluted soils by 99 % without any overburden or excavation operations. 5 tbl, 2 dwg