Journal of the Environmental Engineering Division · 1974 · 27 citations · 0 references
EngineeringEnvironmental EngineeringWater Resources ManagementSediment TransportWastewater TreatmentWater TreatmentSediment DepositionSediment Transport ModelingDiffusion EquationDiffusion Equation ModelsDispersion CoefficientDispersion ModelLongitudinal DispersionResuspensionSediment Transport EquationsSedimentation Basin Design
Scouring of deposits is one of the major factors in designing sedimentation basins for water and wastewater treatment systems. To express the degree of deposit resuspension a scouring parameter is introduced into a dispersion model. The parameter is taken into account in one of the boundary conditions of two-dimensional diffusion equation, which is simplified into a one-dimensional dispersion model. The scouring parameter is related to the longitudinal dispersion coefficient by a model experiment. On the basis of the mathematical expression developed, the existence of the optimum depth of a rectangular settling basin has been theoretically and has been experimentally verified.