文献类型：期刊文献

中文题名：三氯乙烯重质非水相液体聚结分离的实验研究

英文题名：Experimental study on coalescence and separation of trichloroethylene dense nonaqueous phase liquid

作者：赵玮[1];李剑平[2];李诗豪[1];遆王强[1];曾贵禄[3];杨雪晶[2];吕树光[3]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]华东理工大学资源与环境工程学院,高浓度难降解有机废水处理技术国家工程实验室,上海200237;[3]华东理工大学资源与环境工程学院,国家环境保护化工过程环境风险评估与控制重点实验室,上海200237

年份：2021

卷号：43

期号：11

起止页码：1383

中文期刊名：环境污染与防治

外文期刊名：Environmental Pollution & Control

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家重点研发计划项目(No.2018YFC1802505)。

语种：中文

中文关键词：重质非水相液体;聚结;分离;影响因素

外文关键词：dense nonaqueous phase liquid;coalescence;separation;influencing factors

摘要：以三氯乙烯(TCE)为模拟污染物,配置非均质介质TCE重质非水相液体(DNAPL),搭建DNAPL聚结分离器,通过实验研究网状和颗粒状材料润湿性、流量、编织孔径、床层厚度及TCE浓度等重要参数对分离性能的影响规律。结果表明:(1)网状材料润湿性越强,聚结分离器的分离效率越高,相应水相出口TCE浓度越少。应选择亲分散相纤维作为聚结介质,网状聚四氟乙烯具有最高的分离效率(96.71%),是填充聚结分离器的优选材料。(2)填充材料的分离效率随流量的变化曲线呈抛物线,流量为80 L/h时聚结分离器具有最高的分离效率。(3)分离效率随编织孔径的减小、床层厚度的增大、TCE浓度的减小而升高。
Trichloroethylene(TCE)was used as the simulated pollutant,the heterogeneous medium TCE dense nonaqueous phase liquid(DNAPL)was configured to build a DNAPL coalescence separator.The effects of important parameters such as wettability,flow,braided pore size,bed thickness and TCE concentration of reticular and granular materials on the separation performance were studied experimentally.The results showed that:(1)the stronger the wettability of the network material,the higher the separation efficiency of the coalescence separator and the less the TCE concentration at the outlet of the corresponding aqueous phase.The hydrophilic dispersed phase fiber should be selected as the coalescence medium.Mesh polytetrafluoroethylene had the highest separation efficiency(96.71%),and was the preferred material for filling the coalescence separator.(2)The variation curve of the separation efficiency of the filling material with the flow was parabolic.When the flow was 80 L/h,the coalescence separator had the highest separation efficiency.(3)The separation efficiency increased with the decrease of braided pore size,the increase of bed thickness and the decrease of TCE concentration.