Abstract:The removal effect of aqueous-phase 2,4-DNT by zero-valent iron and the degradation kinetics parameters were investigated by laboratory tests. Visual Modflow was used to simulate the removal effect of 2,4-DNT in groundwater by using permeable reactive barrier (PRB) technology with zero-valent iron(ZVI-Fe0) as reactive material and estimate its feasibility at a hypothetical site. The results showed that the pollution plume was effectively controlled and reduced by the technology. 8.76×104 kg ZVI should be consumed to remove 1.46×104kg 2,4-DNT after four years’ contamination. The simulation also showed that as the increasing of the hydraulic conductivity, more pollutant flowed downstream due to the insufficiency contact of 2,4-DNT and ZVI. Numerical simulation is a effective approach to evaluate the remediation efficiency of PRB and determine the parameters of PRB.
马志飞, 廉新颖, 张进保, 姜永海, 杨鹊平, 吕凤春, 席北斗, 杨昱. 零价铁PRB修复2,4-DNT污染地下水模拟研究[J]. 中国环境科学, 2013, 33(5): 814-820.
MA Zhi-Fei, LIAN Xin-Ying, ZHANG Jin-Bao, JIANG Yong-Hai, YANG Que-Ping, 吕Feng-Chun , XI Bei-Dou, YANG Yu. Simulation on remediation of 2,4-DNT in groundwater by zero-valent iron. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(5): 814-820.