At the Heart of the Largest Smolt Facility in Norway

Nordlaks is a Norwegian absolutely built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has lately accomplished the building of a new smolt facility for fish up to 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the biggest of its kind in Norway, with a special concentrate on smolt welfare. The land-based facility has state-of-the-art gear for optimal biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps were supplied by Sulzer.
PROJECT DATA

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 ft of head) submersible propeller pumps (intermittent duty) for the emptying of fish tanks.
THE CHALLENGE

เพรสเชอร์เกจ has thirty-four fish tanks of different capacities (92,000 to 264,000 gallons) in 5 separate main sections. Each section is impartial from the others and includes its own full water therapy system in a semi-closed loop (98 p.c recirculation plus 2 p.c make-up water). The brackish water from the fish tanks first flows by gravity to a rotating drum filter for the removal of the main suspended solid particles. It then falls into an MBBR (moving bed biofilm reactor) for TAN (total ammonium nitrogen) reduction. After passing by way of 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 each fish tank, the water is fully renewed every half an hour. The well-being of the smolts is very depending on a constant circulate of water by way of the ability. The reliability of the recirculation pumps is, therefore, of paramount significance.
High overall vitality efficiency of the RAS plant means a better environmental footprint and reduced working costs. Consequently, the main components of the water treatment loops should have top-class efficiencies, notably the recirculation pumps.
THE SOLUTION

As a long-term provider of kit (pumps and turbines) to different Nordlaks plants, Sulzer was concerned at an early stage of the brand new venture. In collaboration with the Momek Group, a large industrial service supplier in Scandinavia, the pumps have been fastidiously chosen, not only to fulfil the requirements through the warranty period, however to run optimally and economically throughout the whole lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE course of pumps in duplex materials have now been installed and are working constantly. In addition, five VUPX submersible propeller pumps are used on intermittent responsibility when the fish tanks are emptied in the course of the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT

By choosing to work with a trusted companion, the shopper made sure to get fast and everlasting technical assist, in addition to the most effective merchandise. The recirculation pumps have the following major advantages:
Extremely high hydraulic efficiencies that by far exceed the strictest energy rules for water pumps. This means big vitality savings over time and smaller complete price of possession, responsibility factors close to BEP (best effectivity points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump items are working easily with minimized vibration ranges. Superior-grade materials is used for all wetted parts. For the selection of pump materials in touch with brackish water, the long-term perspective favored duplex stainless-steel rather than 316SS. Duplex steels have better design power than austenitic stainless steels, as nicely as greater corrosion, abrasion, and pitting resistance. In the end, maintenance costs and the chance of downtime are reduced.
Sulzer is a acknowledged supplier within the fish farm market, with innovative and confirmed pumping, mixing, and aeration options, and provides highly energy-efficient merchandise with low life-cycle prices and the smallest potential environmental footprint. As a material specialist in a broad range of recent water, brackish water, seawater, and brine functions, we will provide pumps in forged iron, 316 chrome steel, duplex, tremendous duplex, SMO, etc. .
Water remedy system course of chart.
FOR MORE INFORMATION

For more information on Oerlikon Balzers and their household of DLC floor solutions, please go to https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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