堆制技术对土壤中石油烃的降解研究  

Bioremediation of Petroleum Contaminated Soil by Composting

作　　者：王震宇[1] 许颖[1] 高冬梅[1] 李锋民[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《环境科学与技术》2010年第9期1-5,43,共6页Environmental Science & Technology

基　　金：国家科技支撑项目(2006BAC01A13);国家海洋局海洋溢油鉴别与损害评估技术重点实验室开放基金(200701)

摘　　要：土壤的石油污染已成为黄河三角洲地区严重的环境问题。研究利用静态堆制技术比较了不同辅料添加量对原油污染土壤中石油烃降解效率的影响,分析了堆制过程中微生物数量和活性的差异,建立了最佳堆制配比及堆制条件。试验结果表明,污染土壤与辅料的体积比为1∶3时的处理效果最好。在堆制第3天至第18天,堆体温度维持在40～50℃、pH值7.5左右、C∶N约为15∶1,此时最适于石油烃降解菌的生长,土壤中石油烃的降解速率最快。60天后,土壤中总石油烃的降解率可达80%,远高于没有添加辅料及营养的对照堆体的降解率(约为40%)。Petroleum-contaminated soil has become a serious environmental problem in Yellow River Delta. Composting of oil-contaminated soil was investigated using different amendments and ratios. Number of microbes in the soil and microbial activity were determined. The best amendment ratio and conditions were established. Results showed that the optimal volume ratio of soil to amendment additives was 1 to 3. Between 3rd and 18th day after composting,the microbial activity was the highest,which resulted in a high rem...

关 键 词：堆制 石油烃 污染土壤 降解菌 降解率 

分 类 号：X53[环境科学与工程—环境工程]