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An evaluation of a dynamic model of the secondary clarifier

Jeppsson, Ulf LU and Diehl, Stefan LU (1996) In Water Science and Technology 34(5). p.19-26
Abstract
The main objective of the paper is to support and illustrate recent theoretical results on the mathematical modelling of the secondary clarifier. A new settler model is compared with a traditional layer model by means of numerical simulations. Emphasis is put on the numerical solution's ability to approximate the analytical solution of the conservation law written as a non-linear partial differential equation. The new settler model is consistent in this respect. Another important conclusion is that a layer model dividing the settler into only ten layers (normally used in settler models) is too crude an approximation to capture the detailed dynamic behaviour of the settler. All simulations presented are performed with the settler models... (More)
The main objective of the paper is to support and illustrate recent theoretical results on the mathematical modelling of the secondary clarifier. A new settler model is compared with a traditional layer model by means of numerical simulations. Emphasis is put on the numerical solution's ability to approximate the analytical solution of the conservation law written as a non-linear partial differential equation. The new settler model is consistent in this respect. Another important conclusion is that a layer model dividing the settler into only ten layers (normally used in settler models) is too crude an approximation to capture the detailed dynamic behaviour of the settler. All simulations presented are performed with the settler models coupled to 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
secondary clarifier, one-dimensional model, mathematical modelling, clarification, Activated sludge, thickening, solids flux, settler, simulation
in
Water Science and Technology
volume
34
issue
5
pages
19 - 26
publisher
IWA Publishing
external identifiers
  • scopus:0029859439
ISSN
0273-1223
DOI
10.1016/0273-1223(96)00624-5
language
English
LU publication?
yes
id
2f13afb0-828b-40bb-9157-d7582353dc00 (old id 792881)
alternative location
http://www.iwaponline.com/wst/03405/0019/034050019.pdf
date added to LUP
2008-02-04 16:48:51
date last changed
2017-02-13 13:14:10
@article{2f13afb0-828b-40bb-9157-d7582353dc00,
  abstract     = {The main objective of the paper is to support and illustrate recent theoretical results on the mathematical modelling of the secondary clarifier. A new settler model is compared with a traditional layer model by means of numerical simulations. Emphasis is put on the numerical solution's ability to approximate the analytical solution of the conservation law written as a non-linear partial differential equation. The new settler model is consistent in this respect. Another important conclusion is that a layer model dividing the settler into only ten layers (normally used in settler models) is too crude an approximation to capture the detailed dynamic behaviour of the settler. All simulations presented are performed with the settler models coupled to the IAWQ Activated Sludge Model No. 1.},
  author       = {Jeppsson, Ulf and Diehl, Stefan},
  issn         = {0273-1223},
  keyword      = {secondary clarifier,one-dimensional model,mathematical modelling,clarification,Activated sludge,thickening,solids flux,settler,simulation},
  language     = {eng},
  number       = {5},
  pages        = {19--26},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {An evaluation of a dynamic model of the secondary clarifier},
  url          = {http://dx.doi.org/10.1016/0273-1223(96)00624-5},
  volume       = {34},
  year         = {1996},
}