TY - JOUR
T1 - Multi-scale modeling of activated sludge floc structure formation in wastewater bioreactors
AU - Oilghux, Irina D.
AU - Bellucci, Micol
AU - Lavric, Vasile
AU - Picioreanu, Cristian
AU - Curtis, Thomas P.
PY - 2011
Y1 - 2011
N2 - A multi-scale computational model was created for the formation of activated sludge floc structure. The model couples mass balances for substrates and biomass at reactor scale with an individual-based approach for the floc morphology, shape and microcolony development. Among the novel model processes included are the group attachment of micro-flocs to the core structure and the clustering of nitrifiers. Simulation results qualitatively describe the formation of globular colonies of ammonia and nitrite oxidizers in the extracellular polymeric substance produced by heterotrophic microorganisms, as also observed in fluorescence in situ hybridization images. These results are the first step towards a multi-scale model of the activated sludge wastewater treatment systems, which could also be extended to other engineered biological systems.
AB - A multi-scale computational model was created for the formation of activated sludge floc structure. The model couples mass balances for substrates and biomass at reactor scale with an individual-based approach for the floc morphology, shape and microcolony development. Among the novel model processes included are the group attachment of micro-flocs to the core structure and the clustering of nitrifiers. Simulation results qualitatively describe the formation of globular colonies of ammonia and nitrite oxidizers in the extracellular polymeric substance produced by heterotrophic microorganisms, as also observed in fluorescence in situ hybridization images. These results are the first step towards a multi-scale model of the activated sludge wastewater treatment systems, which could also be extended to other engineered biological systems.
KW - Activated sludge floc
KW - Colony size
KW - Individual-based model
KW - Nitrification
UR - http://www.scopus.com/inward/record.url?scp=79958773876&partnerID=8YFLogxK
U2 - 10.1016/B978-0-444-53711-9.50020-1
DO - 10.1016/B978-0-444-53711-9.50020-1
M3 - Article
AN - SCOPUS:79958773876
SN - 1570-7946
VL - 29
SP - 96
EP - 100
JO - Computer Aided Chemical Engineering
JF - Computer Aided Chemical Engineering
ER -