A 'Recirculating Aquaculture System' (RAS) is an advanced form of modern aquaculture that offers extensive control over the rearing environment. This is achieved as water is recirculated within the system with minimal water losses. As such, RAS farming may consume a factor of 10 less water than conventional terrestrial animal farming.
Waste products accumulating in the water are cleaned in several functional compartments. This ensures both ideal rearing conditions and a low environmental impact. Solid waste is sieved away by mechanical filtration while the toxic ammonia produced by fish is removed or converted by biofiltration. Our project performs experiments in modern RAS facilities located at Aarhus University (Zoophysiology) and Sashimi Royal in Denmark and at Nofima in Norway.