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A Simplified Control-Oriented Model of the Activated Sludge Process

Jeppsson, Ulf LU (1995) In Mathematical and Computer Modelling of Dynamical Systems 1(1). p.3-16
Abstract (Swedish)
Automatic control systems rely on models to predict the near future and identification algorithms to adapt the models to changing process behaviour. The traditionally highly complex models of the activated sludge process developed for scientific purposes cannot be identified from on-line measurements and are not suited for process control purposes in their present form. Model decoupling based on the different time scales of the dynamic processes is one possible way of attacking this problem. It allows the implementation of more simple and realistically applicable controllers in combination with predictions based on simplified models in hierarchical control structure. This paper discusses these concepts and presents a reduced order model... (More)
Automatic control systems rely on models to predict the near future and identification algorithms to adapt the models to changing process behaviour. The traditionally highly complex models of the activated sludge process developed for scientific purposes cannot be identified from on-line measurements and are not suited for process control purposes in their present form. Model decoupling based on the different time scales of the dynamic processes is one possible way of attacking this problem. It allows the implementation of more simple and realistically applicable controllers in combination with predictions based on simplified models in hierarchical control structure. This paper discusses these concepts and presents a reduced order model describing carbonaceous removal, nitrification, and denitrification in a medium time scale (several hours/days). The model parameters are identifiable from available on-line measurements and the dynamic behaviour is verified against computer simulations of the IAWQ activated sludge model no. 1. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
activated sludge, automatic control, dynamic modelling, model complexity, model identification, model reduction, wastewater treament
in
Mathematical and Computer Modelling of Dynamical Systems
volume
1
issue
1
pages
3 - 16
publisher
Taylor & Francis
ISSN
1387-3954
DOI
10.1080/13873959508837003
language
English
LU publication?
yes
id
e2732d5b-38b2-44ae-b16a-c65fadd504f7 (old id 4389954)
alternative location
http://www.tandfonline.com/doi/pdf/10.1080/13873959508837003
date added to LUP
2014-04-07 13:21:12
date last changed
2016-04-16 06:43:49
@article{e2732d5b-38b2-44ae-b16a-c65fadd504f7,
  abstract     = {Automatic control systems rely on models to predict the near future and identification algorithms to adapt the models to changing process behaviour. The traditionally highly complex models of the activated sludge process developed for scientific purposes cannot be identified from on-line measurements and are not suited for process control purposes in their present form. Model decoupling based on the different time scales of the dynamic processes is one possible way of attacking this problem. It allows the implementation of more simple and realistically applicable controllers in combination with predictions based on simplified models in hierarchical control structure. This paper discusses these concepts and presents a reduced order model describing carbonaceous removal, nitrification, and denitrification in a medium time scale (several hours/days). The model parameters are identifiable from available on-line measurements and the dynamic behaviour is verified against computer simulations of the IAWQ activated sludge model no. 1.},
  author       = {Jeppsson, Ulf},
  issn         = {1387-3954},
  keyword      = {activated sludge,automatic control,dynamic modelling,model complexity,model identification,model reduction,wastewater treament},
  language     = {eng},
  number       = {1},
  pages        = {3--16},
  publisher    = {Taylor & Francis},
  series       = {Mathematical and Computer Modelling of Dynamical Systems},
  title        = {A Simplified Control-Oriented Model of the Activated Sludge Process},
  url          = {http://dx.doi.org/10.1080/13873959508837003},
  volume       = {1},
  year         = {1995},
}