title: Rheology of a primary and secondary sewage sludge mixture: dependency on temperature and solid concentration.
abstract: The main objective of this study was to investigate the rheology of mixed primary and secondary sludge and its dependency on solid content and temperature. Results of this study showed that the temperature and solid concentration are critical parameters affecting the mixed sludge rheology. It was found that the yield stress increases with an increase in the sludge solid content and decreases with increasing temperature. The rheological behaviour of sludges was modelled using the Herschel-Bulkley model. The results of the model showed a good agreement with experimental data. Depending on the total solid content, the average error varied between 3.25% and 6.22%.
authors.affiliation: SCION, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand. Saeid.Baroutian@scionresearch.com
authors.forename: Saeid
authors.initials: S
authors.lastname: Baroutian
authors.forename: Nicky
authors.initials: N
authors.lastname: Eshtiaghi
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Gapes
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D015233:Models, Statistical; D012212:Rheology; D012722:Sewage / Q000737:chemistry*; D062611:Solid Waste; D013242:Sterilization; D013696:Temperature; D014783:Viscosity
chemical_list: D012722:Sewage; D062611:Solid Waste