ИСТИНА

In Western Siberia, Khanty-Mansi Autonomous Okrug-Yugra, Nizhnevartovsk, the geotube remediation technology has been applied for the first time on lake sediments polluted with oil. Forty four geotubes were filled with the pulp of sediments from three lakes and laid so for two years. After 2 years, the research showed that the concentrations of total petroleum hydrocarbons (TPH), aromatic hydrocarbons and resins-asphaltenes in the soil from the geotubes decreased by 80.6%-97.5%, 64.6%-92.5%, and 45.2%-77.1%, respectively, compared to the initial pollution in lake sediments (807.4±44.9g/kg DM). The soils from the geotubes contain a lot of oil-oxidizing bacteria, heterotrophic and autotrophic microorganisms and have a high biological activity and no phytotoxicity.