石油污染土壤生物修复的最佳生态条件研究

通过正交试验得出了生物修复的最佳降解生态条件。结果表明 :微生物的数量是影响石油降解效率的重要因素 ;石油浓度在一定范围内对石油的降解效率并没有影响 ;石油污染土壤生物修复的最佳生态条件为营养物质C∶N =60 ,电子受体H2 O2 的累计加入量为 1 2mg/ g ,含水量为 50 % ,表面活性剂为阴离子表面活性剂十二烷基苯磺酸钠 ;因素的主次关系排列为含水量、表面活性剂、营养物质和电子受体。

Optimum Ecological Condition for Bioremediation of Petroleum-contaminated Soil

The best biological degradation ecological condition was obtained through orthogonality experiment. Results showed that microorganism quantity was the important factor of affecting petroleum degradation efficiency, and petroleum density in certain scope had no influence. Petroleum-contaminated soil was bioremediated under the best ecological condition of nutrition material C∶N=60, accumulated inputting of electron receiver H_2O_2 12mg/g, water content 50%, and 12 alkyl benzene sodium sulphonate as anion surface activator. Water content, surface activator, nutrition material and electron receiver were ranked as the primary and secondary factors.