Title
Use of oxygen-filled enclosures for aeration and degassing
Publication Date
1991
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.
Notes
ISBN 0-913235-72-5