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Billund Aquaculture Norway builds RAS-facility for Mowi

Monday, November 9, 2020

Billund Aquaculture Norway, a part of the worldwide RAS-provider Billund Aquaculture, inked a deal with fish farming giant, Mowi, for a new RAS investment that will increase the smolt production at Mowi’s Haukå outside Florø, Western Norway. Billund Aquaculture Norway will fulfill the contract in cooperation with the civil contractor Veidekke, a major player in the Norwegian market. The delivery from the two partners includes a complete plant. “This is a milestone in our history. It will be the largest task since our Norwegian based company´s inception in 2017,” director/CTO, Marius Hægh, said.

Mowi engaged Billund Aquaculture Norway first last year to install a new RAS facility for fry production at their Haukå plant. This project is now in its final stages and the newer, far larger, supply agreement includes RAS, piping, electrical, energy plant, feed system, etc. This next step at Haukå will contain two equal production lines, each with a fish tank volume of approximately 5,000 m³ and a feed capacity of 4,400 kg. Both production lines will use moving bed biofilm reactors (MBBR) for treating process water.

Mowi’s freshwater production manager for the region, John-Ivar Sætre said that “the choice of biological treatment method depends on several factors such as the consumption of water and experiences from other facilities and more. And here, in our judgment, we are best served by MBBR – also in terms of continuity associated with existing installations.” The new facility is also being built to use brackish water with salinity up to 20 per L. “It’s not applicable now,” Sætre explained. “But in the long term, it may be desirable to use seawater. And then we have to take into account, among other things, materials that can withstand salt water.”

The permit covers the production of 7.5 million fish annually. This results in an increase from about 400 tons to 1,500 tons of fish a year. An increase in the weight of the smolt up to 300 grams before it leaves a land-based facility means a shorter stay in the sea. This significantly reduces the risk of sea lice.

Construction of this phase 2 began in September. The projects’ groundwork and underground piping are in full swing, and the facilities start-up is scheduled for March 2022.

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