空气吹脱法模拟去除地下水中三氯乙烯研究  

Study on Simulated Removal of Trichloroethylene from Groundwater by Air Stripping

作　　者：吴金红 WU Jin-hong(Shanghai Yaxin Urban Construction Co.,Ltd.,Shanghai 200436,China)

机构地区：[1]上海亚新城市建设有限公司,上海200436

出　　处：《广州化工》2023年第10期108-111,共4页GuangZhou Chemical Industry

基　　金：上海市科委科技创新行动计划(项目编号:18DZ1204400)。

摘　　要：三氯乙烯(TCE)是地下水中的典型有机污染物,其有效治理技术的开发一直是环境领域热点。本文研究了四种曝气流量和三种曝气模式下空气吹脱法对溶液中TCE的去除效果,以及空气吹脱结合热修复法去除TCE时三种因素曝气流量、溶液浓度和温度的影响程度。结果表明:0.5 L/min是最佳的曝气流量,同一流量下浓度越高的溶液中TCE去除速率越大,脉冲曝气模式比连续曝气模式对溶液中TCE的去除效率更高,曝气流量是最重要的影响因素。论文研究结果为后续开展空气吹脱在实际地下水污染场地的应用提供了基础数据和技术支持。Trichloroethylene(TCE)is a typical organic pollutant in groundwater,and the development of effective treatment technology has been a hot topic in environmental field.In the present study,the effects of air stripping on TCE removal in the solution under four aeration flows and three aeration modes were explored,as well as the impacts of three factors(i.e.,aeration flow,solution concentration and temperature)when air stripping combined with thermal repair was used to remove TCE.The results showed that 0.5 L/min was the best aeration flow rate,the higher the concentration of the solution at the same flow rate,the faster the TCE removal rate,pulse aeration mode facilitated that TCE removal efficiency more than continuous aeration mode,and aeration flow was the most important factor.The research results of this paper would provide basic data and technical support for the subsequent application of air stripping in actual groundwater contaminated sites.

关 键 词：三氯乙烯 地下水 空气吹脱 影响因素 

分 类 号：X53[环境科学与工程—环境工程]