Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Analyses of activated sludge processes consisting of a plug-flow reactor and a non-ideal settler

Carlsson, Bengt ; Diehl, Stefan LU and Zambrano, Jesús (2015) 9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
Abstract
An activated sludge process (ASP) consisting of a plug-flow reactor (PFR) and a non-ideal settler is modelled and analysed. One soluble substrate component and one particulate biomass are assumed. The biomass growth rate is described by a Monod function. The settler model includes hindered settling and compression. A model describing the steady-state behaviour of the ASP is derived which constrains the settler to work with a fixed sludge blanket height in the thickening zone. The model provides new understanding for these types of ASPs and may be used for novel design schemes. The numerical example suggests that the steady-state solutions of the ASP give a one-parameter family ofsolutions, where the parameter is the recycle ratio 푟.
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
activated sludge process, plug flow reactor, settler model
host publication
9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
pages
4 pages
conference name
9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
conference location
Gold Coast, Australia
conference dates
2015-06-14 - 2015-06-17
DOI
10.13140/RG.2.1.1939.4164
language
English
LU publication?
yes
id
3cc05ac9-c8a2-4231-9232-489fde22b697
alternative location
http://www.awmc.uq.edu.au/filething/get/4847/P05_Carlsson_WTMTX15.pdf
date added to LUP
2019-06-13 11:39:59
date last changed
2019-07-11 00:55:44
@inproceedings{3cc05ac9-c8a2-4231-9232-489fde22b697,
  abstract     = {{An activated sludge process (ASP) consisting of a plug-flow reactor (PFR) and a non-ideal settler is modelled and analysed. One soluble substrate component and one particulate biomass are assumed. The biomass growth rate is described by a Monod function. The settler model includes hindered settling and compression. A model describing the steady-state behaviour of the ASP is derived which constrains the settler to work with a fixed sludge blanket height in the thickening zone. The model provides new understanding for these types of ASPs and may be used for novel design schemes. The numerical example suggests that the steady-state solutions of the ASP give a one-parameter family ofsolutions, where the parameter is the recycle ratio 푟.}},
  author       = {{Carlsson, Bengt and Diehl, Stefan and Zambrano, Jesús}},
  booktitle    = {{9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)}},
  keywords     = {{activated sludge process; plug flow reactor; settler model}},
  language     = {{eng}},
  title        = {{Analyses of activated sludge processes consisting of a plug-flow reactor and a non-ideal settler}},
  url          = {{http://dx.doi.org/10.13140/RG.2.1.1939.4164}},
  doi          = {{10.13140/RG.2.1.1939.4164}},
  year         = {{2015}},
}