Approach to a Problem of Bioremediation Oil-polluted Raised Bogs in the Western Siberia (Russia)

摘要

This paper has described cleaning of an impassable raised bog polluted with oil in the Northern part of the Western Siberia (Russia) with the oil-oxidizing bacterial preparation Rhoder and has shown that obtained results lead us to the development of a new bioremediation technology for such bogs with the use of aerobic-anaerobic microbial processes there. Huge raised oligotrofic bogs of the Western Siberia hold very important ecological function, supporting a biodiversity of all inhabitants of such bogs and having influence on a climate and quality of surface water. Application of traditional remediation technologies there often causes irreparable damage to such bogs, furthermore these technologies (milling, introduction a lot of lime and fertilizers) are impossible and technically and economically unprofitable. In 2011, bioaugmentation technology with the use of the Rhoder was applied in the Western Siberia for the restoration of an impassable bog accidentally polluted with crude oil because of corrosion of pipe line. Oil was partially gathered by a pump for silts and then the Rhoder was applied three times without milling and with the application of fertilizers and lime only. As a result, the level of oil pollution in the soil was decreased by 32%-98% depending on initial concentration of HC and a depth of oil penetration into the moss. It was observed that indigenous anaerobic microorganisms took part in decontamination of oil pollution in the impassable bog. The obtained results have served as incentive to development of a new bioremediation technology with the application of electron acceptors for intensification of oil degradation in the depth of the polluted layer of moss.