Contaminant Release from Bottom Sediment Under Different Hydrodynamic Conditions

More and more attention has been attached to the study on releasing characteristic of polluted sediment in estuary area. In this paper the bottom sediment of Suzhou creek is selected as a sample to conduct experiment. The effect of sediment contaminant on upper water quality (CODCr) is analyzed by flume experiment under the different hydrodynamic conditions. A numerical model is established by analyzing the characteristics of the flow field and the concentration field in this paper. Through numerical simulation, the concentration distribution and its variation with time was obtained. The concentration distribution and its variation with time was obtained by the numerical simulation, which agree well with the experiment data.