环境工程学报2012，Vol.6Issue(2)：653-657,5.
生物通风技术修复柴油污染土壤的土柱模拟实验
Soil column simulation experiment of remediating soil contaminated by diesel using bioventing technology
摘要
Abstract
Bioventing is an in situ forced oxidative soil remediation technology which combines soil vapor extraction with biodegradation.It has broad application prospects of soil contamination caused by underground storage tank leakage.In this paper,soil column experiment,which was used to simulate diesel contamination,was conducted.The law of balance distribution of residual TPH at different times and the change of diesel quantity in soil at different depths,together with total diesel quantity of the whole column were analyzed.The results showed that：（1） The profile distribution difference of residual TPH was influenced largerly by the initial loading conditions of soil column.（2） The diesel in soil was removed mainly by volatilization and biological degradation for the column which the balance distribution curves of residual TPH was bimodal.（3） Volatilization was mainly influenced by pore volume number during soil venting and soil moisture content,and gravity was mainly influenced by initial diesel concentration,soil moisture content and the ratio of carbon,nitrogen and phosphate.In addition to venting mode,the other factors affect the biodegradation.（4） For the soil column 8 and 11,which the initial diesel concentration were higher and the soil moisture content were both less,the biodegradation was the most significant and the removal effect of diesel in soil column was the best.The results could provide a theoretical basis for the enhancement of bioventing process.关键词
生物通风/柴油污染土壤/残余TPH/衰减Key words
bioventing/diesel contaminated soil/residual TPH/attenuation分类
资源环境引用本文复制引用
杨金凤,陈鸿汉,王春艳,杨正礼..生物通风技术修复柴油污染土壤的土柱模拟实验[J].环境工程学报,2012,6(2):653-657,5.基金项目
科技部国际科技合作项目 （）
