Title

Use of oxygen-filled enclosures for aeration and degassing

Publication Date

1991

Notes

ISBN 0-913235-72-5

Publication Title

Fisheries Bioengineering Symposium: American Fisheries Society Symposium 10

Start Page

459

End Page

464

Editors

Colt J;White RJ;

Publication Place

Bethesda, MD

Publisher

American Fisheries Society

Abstract

Surface aerators are used as temporary and permanent systems to add oxygen to and remove nitrogen gas from hatchery waters. Rates of gas transfer across a water-gas boundary are greater for an oxygen-enriched atmosphere than for air. We compared an enclosed agitator, a pumped spray, and diffusers (airstones) with respect to oxygen absorption efficiency and nitrogen stripping over a range of influent gas (oxygen or air) flow rates. Results indicate the enclosed agitator, receiving oxygen, can be used as a low-cost, portable oxygenation and degassing system.

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