Modelling Hindered Batch Settling with Applications to Activated Sludge andCalcium Carbonate Slurry

摘要

The phenomenon of hindered settling during batch settling is studied. Theelementary aim of this study which summarizes six earlier publications, is to develop a new model for describing batch settling process. The work utilizes the apparent fact that by modelling one property of the settling of particles other properties can be modelled with simple assumptions. Conventionally sludge settleability is assessed from batch settling test using part or points of settling curve. The study proposes a model for describing the whole settling curve and offers a method to compress the information of solids settling. The parameters of the model can be used as settleability indexes. The examination of the model showed that the model is practically and structurally identifiable under experimentation.