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Blue Ocean Technologies signs RAS water treatment contract with Hima Seafood

September 20, 2022  By  Nestor Arellano

Hima Seafood planned land-based trout farm in Rjukan, Norway. (Image: Hima Seafood)

Norway-based sludge and water treatment company Blue Ocean Technology has landed a US$3 million contract to service recirculating aquaculture system (RAS) facility of what has been billed as the world’s largest land-based trout farm.

Blue Ocean Technologies chief executive officer Hans Runshaug said his company will deliver complete sludge treatment with dewatering and drying of fish sludge at the Rjukan, Norway facility of Hima Seafood. The facility which will be  fully operational in 2023, is expected to produced 9,000 tons of trout annually.

“We are proud to have won yet another major sludge treatment contract,” said Runshaug. “The technology scores on low energy consumption, compact area requirements and high dry matter levels. All this provides cost savings and a better ESG accounting for the fish farmers.


The agreement includes Bluehouse systems belt filters BF5000 and Bluehouse systems screw presses S-750 – with complete setup including washing and disinfection systems, complete piping systems, all electrical and control systems.

There is also an option for the eversludgeTM system for complete maintenance, operation and 24/7 remote monitoring of the plant.

The Rjukan facility is is designed to operate with reduce energy consumption and carbon footprint.

Earlier Hima entered into an agreement with Norway colocation company Green Mountain to reuse of waste heat from the data center in the trout farm.



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