Intensification of Bioventilation of Deep Soil Contamination with Oil Products

Classification of in-situ methods of remediation of deep soil contamination with oil products is presented. The optimal calculation scheme for designing a bioventilation system was developed, which boils down to determining the radius of the aerobic influence of the injection well, taking into account the porosity of the soil, the oil pollution rate and the flow rate of the supplied air. The technology of the injection well arrangement for bioventilation was considered. The methods of intensification of bioventilation was proposed: for the territories deeply polluted simultaneously with oil products and heavy metals – preliminary treatment with solutions of humic-mineral complexes; in conditions of low oildestructive potential of native microorganisms – introduction of activated forms of biopreparations; in case of pollution at a depth of more than 20 m – equipping injection wells with turbodeflectors (in the non-vegetation period) to activate degassing of volatile organic compounds.