【摘要】 通过土壤含水率、温度、矿化垃圾的质量分数以及翻耕频率4组单因素试验分析不同修复条件对矿化垃圾强化微生物修复石油污染土壤的影响,对比了不同修复条件下石油污染物的去除率和土壤FDA水解酶活性的差异。结果表明:土壤含水率、修复温度和矿化垃圾的质量分数对矿化垃圾强化微生物修复石油污染土壤的效果影响较大,而翻耕频率的影响很小。确定最佳修复条件为:土壤含水率为15%;环境温度为25℃;矿化垃圾的质量分数为50%;修复过程中不需要采取翻耕措施。该研究可为矿化垃圾应用于石油污染土壤原位修复提供技术撑。更多还原

【Abstract】 Four ingle-factor trials were implemented to analyze the impact of remediation conditions, including soil water content, temperature, mass fraction of aged refuse and tillage frequency, on the enhanced bioremediation of oil-contaminated soil by aged refuse. The difference of oil contaminants removal rate and soil FDA hydrolase activity were compared under different remediation conditions during ingle-factor trials. The results demonstrated that soil moisture content, temperature and the mass fraction of aged refuse had a significant influence on enhanced bioremediation efficacy, while the influence of tillage frequency on it was negligible. The optimum remediation conditions of enhanced bioremediation by aged refuse was 15% soil moisture content, 25 ℃ environment temperature, 50% aged refuse mass fraction, and tillage was not recommended during bioremediation. These findings could provide a technical support for the application of aged refuse to in-situ bioremediation of petroleum-contaminated soil.更多还原