Production of Gas Supersaturation by Aeration
- 1 May 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 111 (3) , 342-360
- https://doi.org/10.1577/1548-8659(1982)111<342:pogsba>2.0.co;2
Abstract
The use of submerged aerators in hatcheries can produce lethal concentrations of dissolved gases. Because the mass-transfer relationships for oxygen, nitrogen, and argon are similar, the aerators with the highest oxygen transfer efficiencies also produce the highest concentration of total dissolved gas. The dissolved-gas concentrations produced by aeration depend on ΔS∞, the percent gas supersaturation in the aeration basin after a long period of aeration divided by the depth of the aeration basin; N0, the standard transfer efficiency; the depth of the aeration basin; and the number of aerators used in series. The effect of these parameters on dissolved-gas concentrations are presented for conditions typical of trout and salmon hatcheries. The prevention of lethal and sublethal gas concentrations will result in a significant decrease in the efficiency of submerged aeration systems for oxygen transfer in aquaculture.Keywords
This publication has 2 references indexed in Scilit:
- Feasibility of Siphons for Degassing WaterTransactions of the American Fisheries Society, 1980
- Rational Design of Hatcheries for Intensive Salmonid Culture, Based on Metabolic CharacteristicsThe Progressive Fish-Culturist, 1977