On the modelling and simulation of a bnr activated sludge process based on distributed parameter approach

A computational algorithm, based on an orthogonal collocation approach is developed to simulate a BNR activated sludge process consisting of anaerobic, anoxic and aerobic zones in a back-to-back scheme. The hydraulic model employed in this study considers backmixing or intermixing, which can represe...

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Bibliographic Details
Published in:Water science and technology Vol. 39; no. 6; pp. 79 - 88
Main Authors: LEE, T. T, WANG, F. Y, NEWELL, R. B
Format: Journal Article Conference Proceeding
Language:English
Published: Oxford Pergamon Press 01.01.1999
IWA Publishing
Subjects:
Activated sludge
Activated sludge process
Algorithms
Anaerobic processes
Anoxia
Applied sciences
Back mixing
Bioaccumulation
Biological and medical sciences
Biological treatment of waters
Bioreactors
Biotechnology
Collocation methods
Computation
Computer applications
Computer simulation
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
Hydraulic models
Industrial applications and implications. Economical aspects
Mathematical models
Modelling
Parameter uncertainty
Phosphorus
Pollution
Process parameters
Sludge
Wastewaters
Water quality
Water treatment and pollution
Water treatment plants
Activated sludge
Elimination
Nutrient
Numerical simulation
Waste water purification
Modeling
Distributed parameter system
Biological purification
ISBN:0080436463, 9780080436463
ISSN:0273-1223, 1996-9732
Online Access:Get full text
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Summary:A computational algorithm, based on an orthogonal collocation approach is developed to simulate a BNR activated sludge process consisting of anaerobic, anoxic and aerobic zones in a back-to-back scheme. The hydraulic model employed in this study considers backmixing or intermixing, which can represent the actual process more accurately than the idealised flow schemes commonly employed for modelling and/or design of the activated sludge bioreactor. The kinetic model of the International Association on Water Quality (IAWQ) - Activated Sludge Model No. 2 (ASM No. 2) was reduced to submodels representing the anaerobic, anoxic and aerobic zones. Validation of simulated results against pilot-scale experimental data suggested that the new computational algorithm is able to predict the behaviour of components of interest reasonably well despite uncertainties with processes and parameters related to phosphorus accumulating organisms. Predicted transient properties may be gainfully employed for improvement to the operation and control of the process.
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ISBN:0080436463
9780080436463
ISSN:0273-1223
1996-9732
DOI:10.1016/S0273-1223(99)00125-0