What is a Recirculating Aquaculture System?

Recirculating Aquaculture System (RAS) is a technology developed for the land-based production of sea and freshwater species. It provides high biomass production while reducing resource usage and maximizing control of operational parameters.

Optimizing control and management of water treatment in RAS is paramount for productivity, animal health, production conditions, environmental benefits, and sustainability.

OPTIRAS will significantly improve technology and protocols for land-based farming of sole and Atlantic codfish.

Main Goals

• Investigate the changes in water chemical parameters, microbiome and physiology of fish in RAS induced by different water treatment processes as well as microorganisms balance in the different steps of water cycle.

• Develop and deploy online monitoring systems for water chemical parameters relevant for the control of the water quality and the ozone demand.

• Test the adequacy and impact of alternative water treatment processes on fish welfare status and water quality.

• Demonstrate a novel water quality control system developed in RAS pilots and improved cultivation protocols for diverse fish farming stages and species.

• Transference of know-how and technologies in RAS between Norwegian and Portuguese companies in order to increase the sector competences, innovation and sustainability.

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