Simulation of pollutants-moving trajectory in the Changjiang Estuary

There are more and more pollutants drained in the basin of Changjiang River and the pollutants movement processes affected by the terrain and water are extremely complex.For the protection of water quality in coastal water environment,the research on pollutants movement needs to be carried out based on the study of the hydrodynamics in these regions.Based on the 3D ECOMSED model and the Lagrangian particle tracking technology,the trajectories of pollutants at the Shidongkou,Zhuyuan,Bailonggang in the Changjiang Estuary were simulated by tracking the movement of single particle and particle swarm these areas.The pollutants movement characteristics and influence scope in the surface,middle and bottom of water were analyzed and some suggestions for the sewage water setup in these areas were provided based on the movement of pollutants.