Sterner in collaboration with Eyvi, has designed and developed a treatment process to recycle all the sludge from Hima Seafood’s land-based salmon farm.
Hima Seafood, in the process of constructing the world’s largest land-based trout aquaculture facility in Rjukan, Norway, has signed a deal with water treatment company Sterner for the processing of waste from the facility.
The Oslo-based treatment company, in collaboration with Eyvi, has designed and developed a treatment process to recycle all the sludge from Hima Seafood’s aquaculture facility, the company announced on Wednesday.
This facility, designed to produce 9,000 metric tons of fish annually, operates on the principles of Recirculating Aquaculture System (RAS), purifying and recycling water to minimize its environmental impact.
Sterner’s technology dries the sludge removed from the fish farm, resulting in a high-quality product that can be reused as organic fertilizer in agriculture.
Daniel Persen, project manager at Sterner, highlighted the unique method used in the process. “We dry and sanitize the sludge in a single process to meet fertilizer product regulations,” he said.
“There are many years of experience and high competence behind the design of this complex facility, ensuring that performance requirements are met. Additionally, the residual heat from sludge treatment at Hima Seafood will be used to heat the building, making this an extremely energy-efficient facility.”
Karl Levinsen, project manager at Eyvi, the main contractor on the project, is enthusiastic about the technology managing the sludge.
“Traditionally, such sludge has been considered waste, but technological advancements in recent years have opened the door to more sustainable management,” said Levinsen.
“This will have significant value, not only for Hima Seafood but also for promoting the circular economy and protecting our environment.”