Enhanced Oxygen Volumetric Mass Transfer in a Geometrically Constrained Vortex

Luewton L. F. Agostinho; Rene Pecnik; Jakob Woisetschläger; Esther de Kroon; Nicolae Siscanu; Maarten V van de Griend; Willibald Loiskandl; Elmar C. Fuchs

doi:10.3390/w14050771

Enhanced Oxygen Volumetric Mass Transfer in a Geometrically Constrained Vortex

Luewton L. F. Agostinho, Rene Pecnik, Jakob Woisetschläger, Esther de Kroon, Nicolae Siscanu, Maarten V van de Griend, Willibald Loiskandl, Elmar C. Fuchs^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Aeration is one of the most cost intensive steps in water and wastewater treatment due to the large energy requirement for the creation of large surfaces for sufficient gas exchange as well as for providing efficient liquid transport in order to exchange saturated liquid elements at the surface with unsaturated ones from the bulk. In this work we show that geometrically constrained vortices in a hyperbolic funnel are a promising aeration technique as they meet these criteria and allow oxygen transfer coefficients up to 50 h−1, a number significantly higher than that of comparable methods like air jets or impellers (<10 h−1)

Original language	English
Article number	771
Number of pages	8
Journal	Water (Switzerland)
Volume	14
Issue number	5
DOIs	https://doi.org/10.3390/w14050771
Publication status	Published - 1 Mar 2022

Keywords

Aeration systems
Hyperbolic funnel
Oxygen diffusion
Vortex

ASJC Scopus subject areas

Water Science and Technology
Geography, Planning and Development
Aquatic Science
Biochemistry

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10.3390/w14050771Licence: CC BY 4.0

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title = "Enhanced Oxygen Volumetric Mass Transfer in a Geometrically Constrained Vortex",

abstract = "Aeration is one of the most cost intensive steps in water and wastewater treatment due to the large energy requirement for the creation of large surfaces for sufficient gas exchange as well as for providing efficient liquid transport in order to exchange saturated liquid elements at the surface with unsaturated ones from the bulk. In this work we show that geometrically constrained vortices in a hyperbolic funnel are a promising aeration technique as they meet these criteria and allow oxygen transfer coefficients up to 50 h−1, a number significantly higher than that of comparable methods like air jets or impellers (<10 h−1)",

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AU - Agostinho, Luewton L. F.

AU - Pecnik, Rene

AU - Woisetschläger, Jakob

AU - de Kroon, Esther

AU - Siscanu, Nicolae

AU - van de Griend, Maarten V

AU - Loiskandl, Willibald

AU - Fuchs, Elmar C.

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Y1 - 2022/3/1

N2 - Aeration is one of the most cost intensive steps in water and wastewater treatment due to the large energy requirement for the creation of large surfaces for sufficient gas exchange as well as for providing efficient liquid transport in order to exchange saturated liquid elements at the surface with unsaturated ones from the bulk. In this work we show that geometrically constrained vortices in a hyperbolic funnel are a promising aeration technique as they meet these criteria and allow oxygen transfer coefficients up to 50 h−1, a number significantly higher than that of comparable methods like air jets or impellers (<10 h−1)

AB - Aeration is one of the most cost intensive steps in water and wastewater treatment due to the large energy requirement for the creation of large surfaces for sufficient gas exchange as well as for providing efficient liquid transport in order to exchange saturated liquid elements at the surface with unsaturated ones from the bulk. In this work we show that geometrically constrained vortices in a hyperbolic funnel are a promising aeration technique as they meet these criteria and allow oxygen transfer coefficients up to 50 h−1, a number significantly higher than that of comparable methods like air jets or impellers (<10 h−1)

KW - aeration systems

KW - vortex

KW - oxygen diffusion

KW - hyperbolic funnel

KW - Aeration systems

KW - Hyperbolic funnel

KW - Oxygen diffusion

KW - Vortex

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JF - Water (Switzerland)

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Enhanced Oxygen Volumetric Mass Transfer in a Geometrically Constrained Vortex

Abstract

Keywords

ASJC Scopus subject areas

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