One-dimension mathematical model for oil pollution transport in silt-laden stream(II):Desorption model

Two different processes of oil pollution happened to silt-laden stream in hilly area,northwest China,are studied and corresponding mathematical models are established.The first one is namely one dimensional adsorption model.In the model the interaction between sedimentation and oil and the dispersion effect of flow on oil are taken into account.The Laplace transform is adopted to deduce the analytical solution of the model.The parameters of the model are obtained from the model test carried out in laboratory and the effects of the major parameters on simulation result are studied.It is predicted that the length of polluted river section will be 500-600m in 15min if pollution is happened.