LrgpV1, PubMed, Checkpoint, bibRecord, 000175

Influence of geometrical and operational parameters on the axial dispersion in an aerated channel reactor.

Identifieur interne : 000175 ( PubMed/Checkpoint ); précédent : 000174; suivant : 000176

Influence of geometrical and operational parameters on the axial dispersion in an aerated channel reactor.

Auteurs : Olivier Potier [France] ; Jean-Pierre Leclerc ; Marie-Noëlle Pons [France]

Source :

Water research [ 0043-1354 ] ; 2005.

RBID : pubmed:16219333

Descripteurs français

KwdFr :
- Bioréacteurs, Cinétique, Conception d'appareillage, Eau (), Eaux d'égout, Modèles théoriques, Purification de l'eau (), Purification de l'eau (instrumentation).
MESH :
- Bioréacteurs, Cinétique, Conception d'appareillage, Eau, Eaux d'égout, Modèles théoriques, Purification de l'eau.

English descriptors

KwdEn :
- Bioreactors, Equipment Design, Kinetics, Models, Theoretical, Sewage, Water (chemistry), Water Purification (instrumentation), Water Purification (methods).
MESH :
- chemical , chemistry : Water.
- chemical : Sewage.
- instrumentation : Water Purification.
- methods : Water Purification.
- Bioreactors, Equipment Design, Kinetics, Models, Theoretical.

Abstract

Residence time distribution experiments have been performed on an activated sludge 3000 m3 channel reactor aerated by gas diffusion (for different liquid flowrates under constant aeration rate and constant water depth) and on a bench-scale channel reactor aerated from the bottom (for different liquid and gas flowrates and water depths) in order to characterize their hydrodynamics. Both units can be modeled as plug flow reactors with axial dispersion. A general correlation has been obtained to predict the axial dispersion coefficient as a function of the gas and liquid velocities and the geometrical parameters of the full-scale and bench-scale reactors. Finally, to facilitate the simulation of biological reactions in transient state, an equivalent model based on tanks-in-series with variable back-mixing flowrate is proposed.

DOI: 10.1016/j.watres.2005.08.024
PubMed: 16219333

Affiliations:

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pubmed:16219333

Le document en format XML

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<front><div type="abstract" xml:lang="en">Residence time distribution experiments have been performed on an activated sludge 3000 m3 channel reactor aerated by gas diffusion (for different liquid flowrates under constant aeration rate and constant water depth) and on a bench-scale channel reactor aerated from the bottom (for different liquid and gas flowrates and water depths) in order to characterize their hydrodynamics. Both units can be modeled as plug flow reactors with axial dispersion. A general correlation has been obtained to predict the axial dispersion coefficient as a function of the gas and liquid velocities and the geometrical parameters of the full-scale and bench-scale reactors. Finally, to facilitate the simulation of biological reactions in transient state, an equivalent model based on tanks-in-series with variable back-mixing flowrate is proposed.</div>
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Influence of geometrical and operational parameters on the axial dispersion in an aerated channel reactor.

Influence of geometrical and operational parameters on the axial dispersion in an aerated channel reactor.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki