Journal ArticleDOI
Applying fine bubble aeration to small aeration tanks
Ph. Duchène,E. Cotteux,S. Capela +2 more
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TLDR
Clean water tests performed at 38 wastewater treatment plants are presented, finding that small open channels can meet sufficient SAE values but fail to meet in this range of tank volumes those of total floor coverage cylindrical tanks.About:
This article is published in Water Science and Technology.The article was published on 2001-07-01. It has received 25 citations till now. The article focuses on the topics: Aeration & Diffuser (sewage).read more
Citations
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Journal ArticleDOI
Predicting oxygen transfer of fine bubble diffused aeration systems—model issued from dimensional analysis
TL;DR: The standard oxygenation performances of fine bubble diffused aeration systems in clean water, measured in 12 cylindrical tanks, were analysed using dimensional analysis and evidences the superiority of the total floor coverage over an arrangement whereby the diffusers are placed on separate grids.
Journal ArticleDOI
Effects of aeration patterns on the flow field in wastewater aeration tanks
TL;DR: CFD enhanced with a biokinetic model and full scale validation using velocity and reactive tracer measurements with high temporal and spatial resolution shows that small changes in the diffuser arrangement drastically change the overall flow field.
Standard Guidelines for In-Process Oxygen Transfer Testing
TL;DR: The standard guidelines for in-process oxygen transfer testing as discussed by the authors describes several proven techniques for measuring oxygen transfer under process conditions Nonsteady state, offgas and inert gas tracer methods are detailed in this standard, followed by a brief discussion comparing the methods.
Journal ArticleDOI
Reduction of aeration costs by tuning a multi-set point on/off controller: A case study
TL;DR: In this article, the optimal set point values should allow the attainment of a good quality of effluent wastewater and minimise the operational costs related to the aeration process, and a more stable system was obtained.
Journal ArticleDOI
Compartmental models for continuous flow reactors derived from CFD simulations.
TL;DR: This paper provides research and practice with a methodology designed to automatically reduce the complexity of such a high-dimensional flow model to a compartmental model, which is fast, easy to use, and open for process modeling with yet unknown compounds.
References
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Measurement of Oxygen Transfer in Clean Water
TL;DR: In this paper, a 5.25-in floppy disk intended to work on hardware/software configurations in existence when the book was published in 1993 is described. But it is not available anymore.
Journal Article
Oxygen transfer efficiency measurements in mixed liquor using off-gas techniques
TL;DR: It has been reported that approximately 1.75 million hp of aeration equipment is currently in place on the North American continent, in both municipal and in dustrial treatment facilities.
Journal ArticleDOI
Effect of horizontal flow on oxygen transfer in clean water and in clean water with surfactants
TL;DR: In this paper, the effect of horizontal flow on bubble size and oxygen transfer was examined in a 400-L pilot of oxidation ditch in clean water, the oxygen transfer increased by 38% when applying a horizontal velocity of 044m s −1, although bubble diameter was increased by 24%.
Standard Guidelines for In-Process Oxygen Transfer Testing
TL;DR: The standard guidelines for in-process oxygen transfer testing as discussed by the authors describes several proven techniques for measuring oxygen transfer under process conditions Nonsteady state, offgas and inert gas tracer methods are detailed in this standard, followed by a brief discussion comparing the methods.
Dissertation
Influence des facteurs de conception et des conditions de fonctionnement des stations d'epuration en boues activees sur le transfert d'oxygene
TL;DR: In this article, a partir de 88 mesures de reoxygenation d'eau claire realisees sur 31 stations and a l'aide de l'analyse dimensionnelle, deux relations permettant de predire le transfert d'oxygene ont ete developpees en fonction des parametres du systeme (debit d'air, densite de diffuseurs, hauteur d-eau, avec ou sans vitesse horizontale du liquide).