Development of model equation for estimating the turbidity reduction in sediment-laden stormwater by a synthetic fiber fence

Abstract

In this paper, a model equation for predicting the reduction efficiency of turbidity matters in a synthetic fiber fence was presented. This model is developed on the assumption that the collection efficiency of a single collector is contributed by three individual transport mechanisms including diffusion, interception and sedimentation. In consideration of the complex internal structure of fiber media, the simulation was also conducted in Happel’s sphere-in-cell porous media model. In the process of modeling work, the dimensionless parameters governing particle deposition were calculated based on the operational and theoretical parameters, and the equation was subsequently obtained by multiple linear regression. The predicted removal efficacy is in a good agreement with the experimental data over a broad range of values using developed equations, indicating that the resulting equation was applicable to the high-speed filtration condition and highly porous filter media. Hence, the developed model may serve as an alternative for the development of turbid runoff treatment technologies.