Fundamental dewatering properties of wastewater treatment sludges from filtration and sedimentation testing
Anthony D Stickland, Casey Burgess, David R Dixon, Peter J Harbour, Peter J Scales, Lindsay J Studer, Shane P Usher
CHEMICAL ENGINEERING SCIENCE | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2008
The prediction and optimisation of the performance of dewatering devices such as filters and thickeners requires the laboratory measurement of fundamental material characteristics. This work presents the application of recently developed methods for the extraction of meaningful phenomenological properties from filtration and sedimentation testing of wastewater sludges, which has previously been limited due to theoretical and experimental constraints. The results for a sample of digested wastewater treatment sludge described a material with weak network strength that was quite permeable at low solids concentrations and the gel point was about 1 v/v%. The sample compressed to high solids conce..View full abstract
The authors wish to acknowledge the financial support of the Particulate Fluids Processing Centre (a Special Research Centre of the Australian Research Council) and industrial sponsorship from United Utilities PLC, UK and Yorkshire Water Services Ltd, UK.