Multivariable control of nutrient-removing activated sludge systems

Steffens, M. A. and Lant, P. A. (1999) Multivariable control of nutrient-removing activated sludge systems. Water Research, 33 12: 2864-2878. doi:10.1016/S0043-1354(98)00521-1

Author Steffens, M. A.
Lant, P. A.
Title Multivariable control of nutrient-removing activated sludge systems
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 1999-08
Sub-type Article (original research)
DOI 10.1016/S0043-1354(98)00521-1
Volume 33
Issue 12
Start page 2864
End page 2878
Total pages 15
Place of publication Oxford, U.K.
Publisher Pergamon Press
Collection year 2000
Language eng
Subject C1
770502 Land and water management
291104 Environmental Technologies
710201 Waste management
Formatted abstract
The aim of this paper is to evaluate several multivariable model-based control algorithms for controlling nitrogen removal in activated sludge processes. We contend that the control of nutrient removal in activated sludge systems is a multivariable control problem, rather than a multiloop problem. The work is a simulation study of a predenitrification activated sludge plant. Several model-based controllers are evaluated and compared against a base-case and multiloop controller. We introduce a quantitative measure to aid in controller evaluation. Model based control algorithms are shown to be able to provide tight control of N removal, thereby offering significant benefits in terms of deferred capital expenditure. This is in return for increased operating costs.
© 1999 Elsevier Science Ltd. All rights reserved
Keyword Engineering, Environmental
Environmental Sciences
Water Resources
Biological Nutrient Removal
Model Based Control
Predictive Control
Model Control
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Advanced Water Management Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 30 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 39 times in Scopus Article | Citations
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Created: Tue, 10 Jun 2008, 12:57:39 EST