A model simulating the transport of dissolved and particulate copper in the Seine river

Micropollutants such as heavy metals may have a great affinity for fine particles, which can deposit in specific areas of a riverine system. Therefore, an assessment of the pollutant transport requires a model simulating hydraulic, sedimentological and chemical processes. In this study, the conceptual model TELEMAC 2D-SUBIEF-MICROPOL was used. This paper describes a methodology aiming at determining all the sedimentological and chemical parameters that have to be introduced in the model:• lation suspended matter (SM)-flow rate, allowing to determine the concentrations of SM which can interact with micropollutants; ttling velocity of particles; itical deposition shear stress, which is a coefficient to be included in the equation simulating the deposition flux; netics coefficients describing the sorption and release of the pollutant between water and particles. all the parameters were determined, the model was used to simulate the transport of copper in the Seine river downstream of the Nogent nuclear power plant. Some applications of the model are shown in this paper: influence of flow rate on deposition; localisation of deposition zones; accumulation of copper in bed sediment at the end of a low flow rate period.