Use of an Industrial Continuous Flow Centrifuge to Capture and Concentrate Finfish Effluent, a Platform Technology Suitable for Many Aquaculture Production Systems

Summary:
Agrimarine Industries Inc. develops and operates solid-walled floating closed-containment finfish aquaculture systems for salmon and other species. Agrimarine closed-containment enclosures incorporate a dual-drain solid waste recovery feature which removes over 80% of feces and uneaten feed from the culture water prior to discharge into the marine environment. Separation is driven by a constant 20 liter per second pumped flow (the primary stream), resulting in a maximum of 1% solids. The primary stream is too dilute and massive for direct land application, and must be further dewatered and rinsed prior to composting. The project developed methods and equipment for dewatering and partially desalinating the primary stream by means of semi-batch filter centrifugation, resulting in a solid cake suitable for direct land application. Cost recovery from sales or other profitable use of the dewatered solids is possible, and will be investigated when sufficient material is available.

Project Lead: AgriMarine Industries Inc.

Total Project Cost: $177,400
           
DFO-AIMAP Contribution: $73,400

Other Financial Support:

• Recipient: AgriMarine Industries Inc

For more information please contact the regional coordinator.

Pacific Region: Sean.Irvine@dfo-mpo.gc.ca