AN APPRAISAL OF SUSPENDED SEDIMENT TRANSPORT MODELING METHODS FOR AN INTERCEPTOR SEWER

The data from a two and a half year field study were used to assess th e performance of various suspended sediment transport modelling method s. The models selected for this purpose were those proposed by Ackers- White and by Sonnen and these have been assessed following site specif ic calibrations. A modified version of the Ackers-white model and a ra ting curve based on a regressional analysis of flowrate versus total s uspended solids were also tried. The calibrated verion of the Ackers-W hite model was selected as giving the best overall accuracy for storm and dry weather conditions. A validation of the selected model using f urther data for the same site gave approximately 69% of predicted conc entrations between 1/2 and 2 times the observed values.