Shear and solid-liquid separation behaviour of anaerobic digested sludge across a broad range of solids concentrations

T Das; SP Usher; DJ Batstone; CA Rees; AD Stickland; N Eshtiaghi

Journal article

Shear and solid-liquid separation behaviour of anaerobic digested sludge across a broad range of solids concentrations

T Das, SP Usher, DJ Batstone, CA Rees, AD Stickland, N Eshtiaghi

Water Research | Published : 2022

DOI: 10.1016/j.watres.2022.118903

Abstract

Due to the non-homogeneous and multiphase nature of anaerobic lagoon constituents, CFD modelling for process optimisation requires continuous functions for shear and solid-liquid separation properties across a large range of solids concentrations. Unfortunately, measurement of existing material properties of anaerobic sludges is limited to only shear or solid-liquid separation, or to a limited solids concentration. In this work, the shear properties of an anaerobic sludge were measured from 0.4 to 12.5 vol%, which corresponds to the solids concentrations seen in lagoons. The sludge showed Newtonian behaviour at 0.4 vol% and Herschel-Bulkley yield stress fluid behaviour for higher concentrati..

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University of Melbourne Researchers

Shane Usher Author

Anthony Stickland Author

Related Projects (1)

BIOSOLID FLOW, SEPARATION AND ACTIVITY IN ANAEROBIC LAGOONS

This project aims to develop a fundamental model of the complex, non-steady state flow behaviour in anaerobic lagoons. The project will dev..

Grants

Awarded by Australian Government

Funding Acknowledgements

Tanmoy Das acknowledges the receipt of Research Scholarship from RMIT University and ARC Linkage project (LP170100257) funded by the Australian Government through the Australian Research Council. The authors thank Dr Judy Blackbeard for grammar corrections, and Peter Wardrop and the Melbourne Water Corporation for providing the sludge