黄土地区石油污染土壤生物修复室内模拟试验研究

Laboratory Study on Bioremediation of Petroleum-Contaminated Soil in Loess Region of China

利用实验室筛选的邻单胞菌属SY23菌株,在实验室模拟条件下,对黄土地区石油污染土壤进行了石油污染土壤在加生物菌剂翻耕、加生物菌剂不翻耕、不加生物菌剂翻耕、不加生物菌剂不翻耕4种不同条件下的强化修复试验。结果表明,生物菌剂对石油污染土壤有着良好的降解效果,翻耕对于提高生物制剂对石油的分解能力有很大的促进作用。加生物菌剂翻耕试验组的石油去除率为84.8%,而不加生物菌剂不翻耕试验的石油去除率仅为24.0%。

The bioremediation effect of four different methods on petroleum-contaminated soil, by using of strain A c inetobacter sp. SY23 isolated in laboratory, was studied under laboratory simulative conditions. All these methods were implemented by certain treatment on the contaminated soil, including： （1）bacteria strain inoculums and ploughing（2）only bacteria strain inoculums（3）only ploughing（4）natural condition （without strain inoculums as well as ploughing）. The results showed that prominent degradation effects were available when microorganisms agent were used to treat the contaminated soil, and ploughing has a great contribution to improve the petroleum-degradation capability of bacteria agent. The removing efficiency of the method using strain inoeulums and plough was 84.8%, while that of natural condition was only 24.0%.