Application and Discussion of Unidimensional Mathematical Model for Water Quality and Sediment in Lower Yellow River

It is aimed at the sandy characteristics in lower Yellow River, the physical process of sedimentation and resuspension has absorption and. resolution role to contamination in water body. It is necessary to put the sediment of source leak as one main term. So this model separates sediment from source leak term, accedes sediment source leak term to unidimensional water quality mathematical simulation. The data gettting at the hydrology condition, is similar to runoff steadily, riverway well proportioned and lab background. The data is coherent. The result of the calculation has little error compare with measurement data. It should take discrete role into account for complex hydrology condition riverway, check out the coefficients K-1, K-s . It should validate the role of sedimentation and resuspend to coefficients K-1, K-s.