地下水修复技术及止水帷幕技术在污染场地项目中的运用  

作　　者：王啟华 黄文涛 陈建 成德久 

机构地区：[1]安徽省通源环境节能股份有限公司,安徽合肥230000

出　　处：《科技创新与应用》2022年第1期178-180,183,共4页Technology Innovation and Application

摘　　要：文章介绍了抽出-异位处理技术在某化工股份有限公司进行地下水有机污染羽修复的案例。该案例通过多级水泵将地下污染羽区内多相态污染介质及NAPL抽提至水面,采用日处理3000t的小型移动式一体化污水处理装置和垂直止水帷幕的设立对地下水进行异位无害化处理。过程中为防止污染羽和洁净地下水不同浓度梯度下的基质对流,在遭受污染的地下水环境中采用常用的膨润土等材料设置半永久性止水帷幕,同时梳理了污水处理工艺和止水帷幕施工流程,总结了止水帷幕在项目中应用的优点,并对地下水修复技术的发展趋势和应用前景进行了展望。A case of extraction-ectopic treatment technology in the remediation of organic pollution plume of groundwater in a chemical plant is introduced.In this case,the multiphase pollution medium and NAPL in the underground pollution plume are extracted to the water surface by a multi-stage pump,and the groundwater is treated innocuously by using a small integrated sewage treatment device with a daily treatment of 3000t and the establishment of a vertical water stop curtain.In order to prevent matrix convection under different concentration gradients of pollution plume and clean groundwater,commonly used bentonite and other materials such as bentonite are used to set up semi-permanent waterproof curtain in the polluted groundwater environment.At the same time,the sewage treatment technology and the construction process of waterproof curtain are combed,the application advantages of waterproof curtain in the project are summarized,and the development trend and application prospect of groundwater remediation technology are prospected.

关 键 词：异位 有机污染羽 地下水修复 止水帷幕 

分 类 号：TU753[建筑科学—建筑技术科学]