Ma Jie, Li Hai-Ming, Gu Xiao-Ming, Li Yun
Laboratory of Coastal Groundwater Utilization & Protection, Tianjin University of Science & Technology, Tianjin 300457, China.
Huan Jing Ke Xue. 2011 Mar;32(3):908-12.
Simulation tank experiment was conducted to elucidate the temporal-spatial variability of Iron and Manganese in leachate pollution plumes of water-bearing media. Colloid effects on transport and transformation of Fe and Mn in water-bearing media were determined emphatically. Moreover, the mechanism of Fe and Mn transport and transformation were discussed by the convection-dispersion, dissolution and transport-deposition of colloid. The results show that the total Fe and Mn in leachate pollution plume was 2.82 times and 7.51 times of infiltration leachate due to the dissolution of water-bearing medium. Along the flow direction, Fe and Mn pollution plumes spread, and the central region of plumes gradually widened by the convection-dispersion and dissolution. In the presence of colloid, the average transport velocity of Fe and Mn plumes central axis from 1.17 cm/d and 1.75 cm/d increased to 1.83 cm/d and 2.5 cm/d respectively, colloid had obvious facilitation to the migration of Fe and Mn.
开展模拟水槽实验以阐明含水层介质渗滤液污染羽中铁和锰的时空变异性。着重确定了胶体对含水层介质中铁和锰迁移转化的影响。此外，通过对流弥散、胶体溶解及输运沉积探讨了铁和锰的迁移转化机制。结果表明，由于含水层介质的溶解作用，渗滤液污染羽中的总铁和总锰分别是入渗渗滤液的2.82倍和7.51倍。沿水流方向，铁和锰污染羽扩散，羽状体中心区域因对流弥散和溶解作用逐渐变宽。在有胶体存在的情况下，铁和锰羽状体中轴线的平均运移速度分别从1.17 cm/d和1.75 cm/d增至1.83 cm/d和2.5 cm/d，胶体对铁和锰的迁移有明显促进作用。
