Author(s): Pengjie Hu, Lingling Wang, Hongwu Tang
Linked Author(s): Pengjie Hu
Keywords: Sediment, contaminant, adsorption, diffusion, sedimentation
Abstract: Based on the complex mechanism of water-sediment-contaminant controlled by gates in plain rivers, this paper puts forward an idea of studying it from multiphase transformation in each interface of water, sediment and contaminant. Conclusions based on recent studies of the interface between sand and contaminant are introduced into the two-dimensional shallow water equations. Then six variable values are taken into account, which are the concentration of dissolved phosphorus in water, the concentration of adsorbed phosphorus in water, the concentration of suspended solids in water, the concentration of dissolved phosphorus in sediment, the concentration of dissolved phosphorus in sediment, the concentration of adsorbed phosphorus in sediment and the mass of sediment. The interaction processes between them, such as adsorption and desorption, sedimentation and resuspension, convection and diffusion are also simulated. By using the established mathematical model to study the rule how sediment and contaminant transport under the control of Bengbu gate in Huaihe river, the evolution processes of concentration of total phosphorus and sediment across the studying district under different hydrological conditions and scheduling methods are obtained
Year: 2017