At the Heart of the Largest Smolt Facility in Norway

Nordlaks is a Norwegian totally integrated firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has lately completed the building of a new smolt facility for fish as a lot as 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the largest of its sort in Norway, with a particular give consideration to smolt welfare. The land-based facility has state-of-the-art equipment for optimal biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps had been supplied by Sulzer.

Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water therapy loops. The dry-installed single-stage overhung pumps are geared up with semi-open impellers and single mechanical seals.
Five VUPX-0402 (602,312 gallons per hour at 10 toes of head) submersible propeller pumps (intermittent duty) for the emptying of fish tanks.

The Innhavet RAS plant has thirty-four fish tanks of different capacities (92,000 to 264,000 gallons) in five separate primary sections. Each part is impartial from the others and consists of its personal full water remedy system in a semi-closed loop (98 p.c recirculation plus 2 percent make-up water). The brackish water from the fish tanks first flows by gravity to a rotating drum filter for the removing of the principle suspended stable particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) discount. After passing through a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the handled water is lastly pumped to some head tanks, previous to oxygenation and return to the fish tanks.
In every fish tank, the water is fully renewed every half an hour. The well-being of the smolts is very depending on a relentless circulate of water by way of the power. The reliability of the recirculation pumps is, due to this fact, of paramount significance.
High overall power efficiency of the RAS plant means a greater environmental footprint and decreased operating prices. Consequently, the principle elements of the water treatment loops will must have top-class efficiencies, significantly the recirculation pumps.

As a long-term supplier of equipment (pumps and turbines) to different Nordlaks vegetation, Sulzer was concerned at an early stage of the brand new project. In collaboration with the Momek Group, a large industrial service supplier in Scandinavia, the pumps were carefully selected, not only to fulfil the requirements in the course of the warranty interval, but to run optimally and economically during the whole lifetime of the location. For the recirculation of the brackish water, fifty AHLSTAR and BE course of pumps in duplex materials have now been put in and are operating repeatedly. In addition, five VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied during the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.

By choosing to work with a trusted partner, the consumer made sure to get fast and permanent technical help, in addition to one of the best products. The recirculation pumps have the next major advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest energy laws for water pumps. This means huge power savings over time and smaller total cost of ownership, duty factors close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump units are working easily with minimized vibration ranges. Superior-grade material is used for all wetted components. For the choice of pump material involved with brackish water, the long-term perspective favored duplex chrome steel rather than 316SS. digital pressure gauge have higher design power than austenitic stainless steels, in addition to larger corrosion, abrasion, and pitting resistance. In the top, upkeep costs and the chance of downtime are reduced.
Sulzer is a acknowledged supplier within the fish farm market, with revolutionary and confirmed pumping, mixing, and aeration solutions, and offers highly energy-efficient products with low life-cycle prices and the smallest attainable environmental footprint. As a material specialist in a variety of contemporary water, brackish water, seawater, and brine purposes, we are in a position to supply pumps in cast iron, 316 stainless-steel, duplex, super duplex, SMO, etc. .
Water remedy system process chart.

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