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Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Rheology of a primary and secondary sewage sludge mixture: dependency on temperature and solid concentration
Saeid Baroutian1, Nicky Eshtiaghi, Daniel J Gapes
1SCION, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand. Saeid.Baroutian@scionresearch.com
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%.
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