两种装置模拟处理三氯乙烯污染地下水研究  

作　　者：吴金红 

机构地区：[1]上海亚新城市建设有限公司,上海200436

出　　处：《科技创新与应用》2023年第34期89-94,共6页Technology Innovation and Application

基　　金：上海市科委科技创新行动计划(18DZ1204400)。

摘　　要：三氯乙烯(TCE)是分布最广泛的地下水污染物之一。该文设计两种装置模拟处理TCE污染地下水,主要研究两种石英砂对TCE吸附的模型,通过红外光谱仪推测TCE加热处理后的产物,采用正交试验探究温度、曝气流量和曝气模式对TCE去除效果的影响,最后针对空气吹脱对实际场地其他特征污染物去除效果开展室内模拟验证。结果表明,Linear和Temkin两个平衡吸附模型均能很好拟合TCE的吸附行为,加热产物中可能有COCl_(2)、CO_(2)、HCl和少量水生成,曝气量和温度是影响吹脱效果的主要因素,对实际场地其他特征污染物也有较好的去除效果。该文研究结果为开展TCE污染地下水修复提供基础数据和技术支持。Trichloroethylene(TCE)is one of the most widely distributed contaminants in the groundwater.In the present study two devices were designed to simulate the treatment of TCE-contaminated groundwater.First,the adsorption models of TCE by two kinds of quartz sand were determined.Second,the products after heating treatment of TCE were explored by the infrared spectrometer.Third,the effects of temperature,aeration flow rate and aeration mode on the removal effects of TCE were investigated by the orthogonal test.Finally,the simulation verification of air blowing to the removal of other characteristic pollutants in the actual polluted site was carried out in the laboratory.The results show that both Linear and Temkin equilibrium adsorption models can well fit the adsorption behavior of TCE,and there may be COCl_(2),CO_(2),HCl and a small amount of water generated in the heating products.Aeration rate and temperature are the main factors affecting the stripping effect,and have a good removal effect on other characteristic pollutants in the actual site.The results of this paper provide basic data and technical support for the remediation of TCE contaminated groundwater.

关 键 词：三氯乙烯 地下水 空气吹脱 加热处理 箱形装置 

分 类 号：X53[环境科学与工程—环境工程]