西北黄土区石油污染土壤原位微生物生态修复试验研究

Experimental Study of in-situ Microbial Ecological Remediation for Oil Contaminated Soil in Northwestern Loess Region

通过对西北黄土石油开采区石油污染土壤生物强化原位微生物生态修复方法的试验研究,充分利用强化原位微生物菌群辅以物理和化学方法与土壤环境相结合的微生物生态技术,进行了土壤中石油的降解与修复试验研究,试验结果显示,土壤中平均石油含量在2754mg/kg时,经过11d～32d强化原位微生物生态修复技术的修复,土壤中石油含量降解可达40.92%～80.37%,验证了微生物生态修复技术在西北黄土区土壤石油污染修复的有效性,探索了推广应用的可行性。

The experimental study of in-situ enhanced microbial ecological remediation for oil contaminated loess soil was carded out in oil production areas of North Shaanxi Province. In the experiments, the microbial ecological techniques of in-situ microbial communities combined with the physical and chemical meth- ods as well as soil environment were used for the oil degradation and contaminated soil remediation. The results of the experiment showed that can degradation rate of oil can be up to 40.92% to 80.37% under oil average contents of 2754 mg/kg in the contaminated soil after the in-situ enhanced microbial ecological remediation for 11 to 32 days, which demonstrated the effectiveness of the in-situ microbial ecological remediation methods for oil contaminated soil in northwestern loess region. In addition, it was discussed for feasibility of extend application of the technique.