Experimental Study on Influencing Factors of Soil Vapor Extraction in Toluene-Contaminated Sandy Soils
Soil vapor extraction(SVE)has been one of the most widely used technologies for remediation of volatile organic compound contaminated sites.However,it is found that various environment factors may have quite different influence on the final remediation effect.In order to learn the influencing factors which affect the removal efficiency of toluene-contaminated sandy soils by SVE method,a series of one-dimensional SVE column tests were conducted.The factors such as grain size,air flow rate and water content were investigated separately.The results indicate that:(1)grain size has a great influence on toluene removal efficiency.The finer the sand is,the lower the removal rate will be;(2)increasing the vapor flow rate will lead to higher contaminant removal efficiency,but the increment of remediation efficiency was not significant at higher flow rate levels;(3)At low water content level,the increase of water content will lead to the decrease of contaminant removal efficiency.
Soil vapor extraction Grain size Air flow rate Water content
Bai-Yang Mao Zhi-bin Liu Song-Yu Liu Qi-Bing Wei
Institute of Geotechnical Engineering,Southeast University,Nanjing 210096,China;Jiangsu Key Laborato Institute of Geotechnical Engineering,Southeast University,Nanjing 210096,China;Jiangsu Key Laborato
国际会议
The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)
杭州
英文
874-881
2018-10-28（万方平台首次上网日期，不代表论文的发表时间）