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Modeling of aerated upflowed fixed bed reactors for the nitrification
Citation Link: https://doi.org/10.15480/882.229
Publikationstyp
Journal Article
Date Issued
1998
Sprache
English
Author(s)
TORE-DOI
Journal
Volume
39
Issue
4
Start Page
85
End Page
92
Citation
Water Science & Technology, 39, (4), pp. 85-92
Publisher DOI
Publisher
IWA Publishing
A mathematical model for the nitrification in an aerated fixed bed reactor has been developed. This model is based on material balances in the bulk liquid, gas phase and in the biofilm area. The fixed bed is divided into a number of cells according to the reduced remixing behaviour. A fixed bed cell consists of 4 compartments: the support, the gas phase, the bulk liquid phase and the stagnant volume containing the biofilm. In the stagnant volume the biological transmutation of the ammonia is located. The transport phenomena are modelled with mass transfer formulations so that the balances could be formulated as an initial value problem. The results of the simulation and experiments are compared.
Subjects
biofilm systems
fixed bed reactor
wastewater treatment
nitrification
modelling
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