河流底泥沉积态重金属污染风险预测模型的建立  

Construction of prediction model of heavy metal pollution risk in river sediment

作　　者：刘鑫垚[1] 冼萍[1] 李小明[1] 莫创荣[1] 徐英博[1] 唐铭[1] 邓国龙[1] 

机构地区：[1]广西大学环境学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2014年第3期586-590,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：广西自然科学基金资助项目(2010GXNSFA013004)

摘　　要：鉴于水体突发性重金属污染事故发生时底泥存在重金属污染风险不明的问题,以河流底泥中重金属浓度为研究对象,建立底泥重金属一维稳态迁移转化模型,并以广西龙江河镉污染事故底泥重金属污染风险为例进行模拟预测。结果表明:随着底泥向下游迁移,龙江河底泥镉浓度逐渐升高,距离污染源14 km处的拉浪水电站底泥镉浓度升高了55%,说明一维稳态模拟条件下龙江河镉污染事故造成的底泥重金属污染存在较重的风险。When the sudden heavy metal water pollution accident happened,the risk of heavy metal pollution in sediment is unclear. Research on the concentration of heavy metal in sediment of river was carried out. One-dimensional steady-state migration and transformation model of heavy metal in sediment was built and Guangxi Longjiang River cadmium pollution accident was used as an example to predict the risk. Results showed that concentration of cadmium in sediment of Longjiang river increased gradually with sediment migrated to downstream. Concentration of cadmium in sediment of Lalang hydropower station increased by 55%,where is 14 km far from pollution source. It indicated that sediment heavy metal pollution caused by Long River cadmium pollution incident exists high risk under one-dimensional steady-state simulated condition.

关 键 词：重金属 迁移转化 模型 底泥 

分 类 号：X522[环境科学与工程—环境工程]