南水北调与水利科技2012，Vol.10Issue(3)：82-86,5.DOI:10.3724/SP.J.1201.2012.03082
滨海平原水库底质对铬的吸附作用
Adsorption of Chromium at the Bottom Sediment of Coastal Plain Reservoir
摘要
Abstract
The sediments in different locations of the bottom of the Beidagang reservoir in the coastal area of Tianjin City were collected and performed laboratory soil-column experiments to investigate the dynamic characteristics of chromium adsorption occurring at these sediments,which can help understand the adsorption mechanisms of chromium at the sediments. The results showed that the abilities to absorb chromium of the sediments vary with different positions of the reservoir bottom. The adsorption capacity of chromium was easy to reach the saturation status for the sediments at the entrance of the reservoir,and the residual chromium in the sediments can be released to the water after the adsorption saturation. The chromium adsorption capacity was strong and not easy to reach the saturation status for the sediments at the outlet and center of the reservoir, which therefore can decrease the content of chromium in the water. The accumulative quantity of chromium adsorption at the bottom sediments were in a linear relationship with the pore volumes. Furthermore, the adsorption capacity of chromium at the bottom sediments was related to the particle size,cation exchange capacity,and salinity of the sediments.关键词
滨海水库/重金属铬/底质/吸附Key words
coastal reservoir/ heavy metal chromium) sediments adsorption分类
建筑与水利引用本文复制引用
李子琛,李海明,赵雪,马斌,李群..滨海平原水库底质对铬的吸附作用[J].南水北调与水利科技,2012,10(3):82-86,5.基金项目
天津市自然科学基金重点项目(11JCZDJC24700) （11JCZDJC24700）
国家自然科学基金项目(40872156) （40872156）
国家水体污染控制与治理科技重大专项(2009ZX07212-003). （2009ZX07212-003）
