某地块土壤氧化和淋洗修复工程案例分析

Case Study of Soil Oxidation and Washing Remediation Project in a Contaminated Site

以上海市某地块土壤修复工程为实例,采取适用于地块施工特点的相应针对性施工部署和相关措施,通过现场中试确定污染土壤氧化和淋洗修复的药剂量、固液比等工艺参数并应用于工程实施,在保证施工过程基坑开挖安全和有效落实二次污染防控措施的前提下,修复后土壤检测结果均符合效果评估要求并且对周边环境未造成不良影响。该应用案例对涉及较深基坑开挖、周边敏感目标集中的人口密集区域地块开展土壤修复施工的总体部署、工艺研究以及工程应用具有指导意义。

Taking a soil remediation project of a certain block in Shanghai as an example,this paper adopts the corresponding construction deployment and relevant suitable measures for the characteristics of the block.Determined by oxidation of contaminated soil and leaching repair on site pilot dose of medicine and solid-liquid ratio of process parameters,under the premise of ensuring the safety and effective implementation of secondary pollution prevention and control measures during the construction process of foundation pit excavation,the soil test results after the restoration can meet the requirements of effect evaluation without adverse impact on the surrounding environment.The application case has guiding significance for the overall deployment,process research and engineering application of soil remediation construction in densely populated areas which involving deep foundation pit excavation and surrounding sensitive targets.