Modeling of sediment and heavy metal transport in Taihu Lake, China  

作　　者：王超 申超 王沛芳 钱进 侯俊 刘佳佳 

机构地区：[1]Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education and College of Enviroment, Hohai University

出　　处：《Journal of Hydrodynamics》2013年第3期379-387,共9页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Key Basic Research Development Program of China (973 Program, Grant No.2010CB429006);the Basic Research Project of Jiangsu Provi-nce (Grant No. BK2012037);the Fundamental Research Funds for the Central Universities (Grant No. 2012B06314)

摘　　要：With the current rapid economic growth, heavy metal pollution has become one of the key issues in the Taihu Lake. Although heavy metal pollution levels and distributions of the Taihu Lake have previously been described, an effective model to describe the transport process of heavy metals between the water column and sediment bed for this lake is not available. It is known that heavy metals in the water column can be related to the resuspension of sediment in the lake bed. In this study, we set up a cou- pled model of relating hydrodynamics, sediment and heavy metals based on Environmental Fluid Dynamics Code （EFDC）, and app- lied it to Taihu Lake, China. For calibration and validation of the model, we employed two series of field sampling data taken all over Taihu Lake during April and July of 2009. The results show that the hydrodynamics simulations of the coupled model agree with the observations reasonably well and the sediment and heavy metal model shows similar variation trends during the simulation. Our results indicate that the model can be used for simulating the sediment and heavy metal transport process in the Taihu Lake and here we provide an effective tool for water quality management at small time scales.With the current rapid economic growth, heavy metal pollution has become one of the key issues in the Taihu Lake. Although heavy metal pollution levels and distributions of the Taihu Lake have previously been described, an effective model to describe the transport process of heavy metals between the water column and sediment bed for this lake is not available. It is known that heavy metals in the water column can be related to the resuspension of sediment in the lake bed. In this study, we set up a cou- pled model of relating hydrodynamics, sediment and heavy metals based on Environmental Fluid Dynamics Code （EFDC）, and app- lied it to Taihu Lake, China. For calibration and validation of the model, we employed two series of field sampling data taken all over Taihu Lake during April and July of 2009. The results show that the hydrodynamics simulations of the coupled model agree with the observations reasonably well and the sediment and heavy metal model shows similar variation trends during the simulation. Our results indicate that the model can be used for simulating the sediment and heavy metal transport process in the Taihu Lake and here we provide an effective tool for water quality management at small time scales.

关 键 词：SEDIMENT heavy metal Environmental Fluid Dynamics Code （EFDC） Taihu Lake 

分 类 号：X524[环境科学与工程—环境工程]