表层土壤轻质油污染的原位通风去除  

In-Situ Venting Remediation of Light Oil Polluted Surface Soil

作　　者：吴丹[1] 李鑫钢[1] 黄国强[1] 杨乐巍[1] 

机构地区：[1]天津大学化工学院精馏技术国家工程研究中心,天津300072

出　　处：《化学工业与工程》2008年第1期61-64,共4页Chemical Industry and Engineering

摘　　要：选取天津滨海地区某地为现场通风试验场址,通过中试试验研究了轻质油污染通风修复方法在该地类型土壤中应用的可行性。在分析了现场通风抽提能力的基础上,以轻质油代表物正己烷为模拟污染物,对抽提过程中抽提尾气正己烷浓度监测,研究了该中试方法去除土壤中轻质油污染物的效果。结果显示,当模拟污染现场抽提过程正己烷初始质量浓度为452.04 mg/m3时,经过89 h通风抽提试验后,正己烷质量浓度下降到6.28 mg/m3,抽提后期有较长的拖尾阶段。研究表明该类型土壤使用原位通风法去除轻质油污染效果良好。A place located in Binhai District of Tianjin City was chosen as pilot venting experiment location to research the feasibility of pilot in-situ venting method applied to typical soil in Binhai area. The capabilities of site venting and extraction of site experiment were analyzed. In this paper, n-hexane, as a typical substance of light .petroleum, was chosen to be the model contamination. During the extraction process, concentration of n-hexane emitted was detected to study the effect of removing light petroleum waste by using pilot in-situ venting system. According to the result, the concentration of n-hexane during extraction was decreased from 452.04 mg/m^3 to 6.28 mg/m^3 by 89 h venting, with a long tailing stage. The results show that in-situ venting method works well on this kind of soil.

关 键 词：土壤修复 油污染 正己烷 原位通风 

分 类 号：X53[环境科学与工程—环境工程]