Submitted to: International Sustainable Marine Fish Culture Conference and Workshop Book of Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 9/15/2007
Publication Date: 10/15/2007
Citation: Hearn, R.A., Pfeiffer, T.J., Malone, R.F. 2007. Flow, aeration, and carbon dioxide transfer rates for airlifts used in recirculating aquaculture systems [abstract]. International Sustainable Marine Fish Culture Conference and Workshop Book of Abstracts. p. 24.
Technical Abstract: Airlift pumping systems reduce the electrical costs of moving water in a recirculating aquaculture system and can be concurrently designed to aerate water and remove carbon dioxide. This study determined the water flow, oxygen transfer, and CO2 removal rates for water using airlift technology in a 10.2 to 20.3 cm diameter pipes. Water flow ranged from 170 to 490 Lpm and oxygen transfer rates ranged from 0.05 to 0.19 kg O2/hr depending on pipe diameters, water flow rates, and air to liquid flow ratios. The values are sufficient to support brood stock system but must be complemented by in-tank aeration for heavier loaded systems.