基于快速检测技术的VOCs污染场地修复工艺优化

Optimization of VOCs Contaminated Site Remediation Process Based on Rapid Detection Technology

以上海某挥发性有机污染场地为例,通过选定测试期内基于单个抽提井点的群井快速监测和基于单排抽提井点出水快速监测这2种模式对修复过程施工工艺进行动态优化调整,并将工艺优化调整前后光离子化检测器测值与传统实验室检测值进行对比分析。结果表明:光离子化检测器测值与污染物浓度测值正相关性较高,测试期内一般污染区域地下水中污染物去除率为40%~70%,重点污染区域达到90%以上;因此快速检测技术可以作为修复过程中的实时检测工具,能够优化修复工艺流程,有效指导类似修复工程的施工。

Taking a VOCs contaminated site in Shanghai as a case, the remediation process will be adjusted dynamically based on the rapid water quality monitoring results Of a group of single pumping wells and a number of single rows, and the pho- toionization detector （PID）values were used to compare and verify the conventional laboratory values after the remediation op- timization.The results shows that the PtD values and contaminants concentrations values have a high positive correlation, the re- moval rate ofpolhitants in the general groundwater contaminated areas was 40%~70% and this value reached over 90% in heavy contaminated areas during the test period. So, rapid detection technology can be used as the real-time detection tools in the re- pair process, which can optimize the remediation process and effectively guide similar remediation projects.