Simulations of reactive settling of activated sludge with a reduced biokinetic model
(2016) In Computers and Chemical Engineering 92. p.216-229- Abstract
Denitrification during the sedimentation process in secondary settlers in waste-water treatment plants has been reported to be still a significant problem. The modelling of such a process with the conservation of mass leads to a nonlinear convection–diffusion–reaction partial differential equation, which needs non-standard numerical methods to obtain reliable simulations. The purpose of this study is to provide a first extension of the Bürger–Diehl settler model, which models sedimentation without reactions, to include biological reactions. This is done with a reduced biokinetic model that contains only the relevant particulate and soluble components. Furthermore, the development is limited to batch settling. The final model describes... (More)
Denitrification during the sedimentation process in secondary settlers in waste-water treatment plants has been reported to be still a significant problem. The modelling of such a process with the conservation of mass leads to a nonlinear convection–diffusion–reaction partial differential equation, which needs non-standard numerical methods to obtain reliable simulations. The purpose of this study is to provide a first extension of the Bürger–Diehl settler model, which models sedimentation without reactions, to include biological reactions. This is done with a reduced biokinetic model that contains only the relevant particulate and soluble components. Furthermore, the development is limited to batch settling. The final model describes the last settling stage of a sequencing batch reactor with denitrification. The main result of the paper is a numerical scheme that is tested for simulations with several initial conditions.
(Less)
- author
- Bürger, Raimund ; Careaga, Julio ; Diehl, Stefan LU ; Mejías, Camilo ; Nopens, Ingmar ; Torfs, Elena and Vanrolleghem, Peter A.
- organization
- publishing date
- 2016-09-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Batch sedimentation, Degenerate parabolic PDE, Numerical scheme, Sequencing batch reactor
- in
- Computers and Chemical Engineering
- volume
- 92
- pages
- 14 pages
- publisher
- Elsevier
- external identifiers
-
- wos:000380513500017
- scopus:84975788840
- ISSN
- 0098-1354
- DOI
- 10.1016/j.compchemeng.2016.04.037
- language
- English
- LU publication?
- yes
- id
- 50a89f6b-cb57-4014-9c1c-3c3d5b9a48b0
- date added to LUP
- 2016-11-09 13:01:06
- date last changed
- 2024-04-05 09:57:40
@article{50a89f6b-cb57-4014-9c1c-3c3d5b9a48b0,
abstract = {{<p>Denitrification during the sedimentation process in secondary settlers in waste-water treatment plants has been reported to be still a significant problem. The modelling of such a process with the conservation of mass leads to a nonlinear convection–diffusion–reaction partial differential equation, which needs non-standard numerical methods to obtain reliable simulations. The purpose of this study is to provide a first extension of the Bürger–Diehl settler model, which models sedimentation without reactions, to include biological reactions. This is done with a reduced biokinetic model that contains only the relevant particulate and soluble components. Furthermore, the development is limited to batch settling. The final model describes the last settling stage of a sequencing batch reactor with denitrification. The main result of the paper is a numerical scheme that is tested for simulations with several initial conditions.</p>}},
author = {{Bürger, Raimund and Careaga, Julio and Diehl, Stefan and Mejías, Camilo and Nopens, Ingmar and Torfs, Elena and Vanrolleghem, Peter A.}},
issn = {{0098-1354}},
keywords = {{Batch sedimentation; Degenerate parabolic PDE; Numerical scheme; Sequencing batch reactor}},
language = {{eng}},
month = {{09}},
pages = {{216--229}},
publisher = {{Elsevier}},
series = {{Computers and Chemical Engineering}},
title = {{Simulations of reactive settling of activated sludge with a reduced biokinetic model}},
url = {{http://dx.doi.org/10.1016/j.compchemeng.2016.04.037}},
doi = {{10.1016/j.compchemeng.2016.04.037}},
volume = {{92}},
year = {{2016}},
}