Open AccessRheology of Activated Sludge in Membrane Bioreactors
Author(s) -
Rosenberger S.,
Kubin K.,
Kraume M.
Publication year - 2002
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/1618-2863(20020910)2:9<269::aid-elsc269>3.0.co;2-v
Subject(s) - rheology , shear thinning , activated sludge , bioreactor , membrane bioreactor , membrane , apparent viscosity , shear rate , viscosity , chemical engineering , particle (ecology) , chemistry , materials science , chromatography , environmental engineering , sewage treatment , environmental science , biochemistry , composite material , engineering , biology , organic chemistry , ecology
Activated sludge rheology plays a major part in the design of membrane bioreactors (MBR). In this paper, the rheological behavior of activated sludge samples taken from nine different MBR was investigated. All samples showed strongly pseudoplastic behavior. The apparent viscosity was found to be dependent on the applied shear rate and, further, on the particle concentration. Two mathematical approaches, the Ostwald equation and the Hershel‐Bulkley equation, were compared to model the rheological behavior of the investigated sludges.