Changes in rheological properties during anaerobic digestion of activated sludge
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Gdansk University of Technology
 
 
Publication date: 2010-01-01
 
 
Corresponding author
Robert Aranowski   

Department of Chemical Technology, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland
 
 
Physicochem. Probl. Miner. Process. 2010;44(1):13-22
 
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ABSTRACT
The measurements of rheological properties of activated sludge suspension after mechanical disintegration indicate a substantial decrease in viscosity of up to 60%. Together with the decrease of viscosity pseudoplastic properties increased and the flow limit dropped. Similarly, significant changes of rheological properties occurred in the sludge, subjected to methane fermentation. One can observe that the length of fermentation period influences the decrease in viscosity of the sewage sludge. It is postulated to use the measurement of viscosity for the estimation of excessive sludge disintegration ratio as this method is much faster than determination of COD.
eISSN:2084-4735
ISSN:1643-1049
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