Title: Practical design and application of airlift technology for aquaculture reuse systems Authors
|Malone, Ronald - LSU|
Submitted to: Book of Abstracts Aquaculture America
Publication Type: Abstract Only
Publication Acceptance Date: December 15, 2006
Publication Date: February 26, 2007
Citation: Pfeiffer, T.J., Malone, R.F. 2007. Practical design and application of airlift technology for aquaculture reuse systems [abstract]. Book of Abstracts Aquaculture America. p. 710. Technical Abstract: Air-lift technology to support water movement in low-head water treatment units for recirculating aquacultures systems provides an energy efficient alternative to the use of centrifugal pumps. The benefits of air-lift are further realized when electrical requirements for aeration, CO2 degassing, and foam fractionation are considered in the overall design criteria. Implementation of airlift technology lowers capital costs, simplifies operational design, and allows for decentralized biosecurity considerations. A simplified rule of design criteria for utilizing airlift technology includes: 1. An air to liquid flow ratio of 2 to 1; 2. Approach water flow velocity of at least 2 fps; 3. A water flow velocity of at least 1 fps in the lift pipe; 4. A submergence to lift ratio of 5:1; and 6. Less than 12 inches of dynamic head loss.