A generalised procedure for modelling and simulation of activated sludge plant using lumped-parameter approach

Lee T.T., Wang F.Y. and Newell R.B. (1997) A generalised procedure for modelling and simulation of activated sludge plant using lumped-parameter approach. Journal of Environmental Science and Health - Part A Environmental Science and Engineering and Toxic and Hazardous Substance Control, 32 1: 83-104.

Author Lee T.T.
Wang F.Y.
Newell R.B.
Title A generalised procedure for modelling and simulation of activated sludge plant using lumped-parameter approach
Journal name Journal of Environmental Science and Health - Part A Environmental Science and Engineering and Toxic and Hazardous Substance Control   Check publisher's open access policy
ISSN 1077-1204
Publication date 1997-01-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 32
Issue 1
Start page 83
End page 104
Total pages 22
Language eng
Subject 2310 Pollution
2300 Environmental Science
2304 Environmental Chemistry
2305 Environmental Engineering
Abstract Design, operation, control and derating of modern activated sludge plant require good modelling effort. The completely-mixed tank in series (CSTR-in-series) concept has been widely used to represent nonideal flow in the actual activated sludge process. However there appears to be lack of a generalised approach to model the process using this concept. In this paper, a systematic procedure to model the process using the CSTR-in-series concept is developed. Using equi-sized CSTRs, the number of CSTR-in-series to represent the actual process may be determined through investigation of the steady-state and dynamic responses of the continuous process. This procedure is proven to be simple and the process can be modelled with reasonable accuracy. Based on simulation results and validation of model with pilot-scale experimental data, it is recommended that two CSTR-in-series model should be employed to adequately represent the activated sludge process for carbon removal of a typical municipal wastewater plant to a satisfactory effluent quality. The transient behaviour of biomass, substrate and dissolved oxygen concentration at various spatial positions along the reactor represented by the serial number of the CSTR's may also be usefully predicted.
Keyword Activated sludge
CSTR-in-series
Modelling
Procedure
Simulation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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