生态环境学报2012，Vol.21Issue(4)：733-736,4.
强化的零价铁PRB技术对PCBs污染地下水的修复
Enhanced Fe0 PRB technology for the remediation of PCBs contaminated groundwater
摘要
Abstract
In this paper, column experiments were conducted to enhance the performance of the Fe° based Permeable Reactive Barrier (PRB) technology by utilizing Fe°, Fe°/Zn° and Fe°/activated carbon as the reactive materials. Three laboratory columns were set up and operated under conditions simulating those anticipated in grouodwater to investigate the feasibility and efficiency of the enhanced Fe° PRB for the treatment of the PCBs contaminated groundwater. Operating under 10 °C and an effective porosity of 61% to 67% and infiltratioa velocity of groundwater of 0.7 to 0.8 m·d-1, the columns can accomplish 94%, 85% and 79% of PCBs removal, respectively, pH value raised to 8.78, 10.2, 7.93 and Eh value decreased to -135, -107 and -86.4 mV and the average iron concentration of effluent was 0.241, 0.129 and 0.201 mg·L-1, respectively, and the average dechlorination efficiency reached 49.6%, 72.6% and 58.6%, respectively. Comprehensive consideration suggested that Fe° based PRB technology is feasible for the remediation of PCBs contaminated groundwater.关键词
可渗透反应墙/多氯联苯/地下水修复/零价铁/原位处理Key words
permeable reactive barrier, polychlorinated biphenyls/ groundwater remediation/ Zero valent iron/ In situ treatment分类
资源环境引用本文复制引用
刘园园,高松,邱明英,吕春欣,张兰英..强化的零价铁PRB技术对PCBs污染地下水的修复[J].生态环境学报,2012,21(4):733-736,4.基金项目
国家自然科学基金项目(50879029/E090301) （50879029/E090301）
