At the Heart of the Largest Smolt Facility in Norway

Nordlaks is a Norwegian fully built-in company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently completed the building of a model new smolt facility for fish as much as 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the most important of its sort in Norway, with a particular concentrate on smolt welfare. The land-based facility has state-of-the-art tools for optimal biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps were equipped by Sulzer.
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water treatment loops. The dry-installed single-stage overhung pumps are outfitted with semi-open impellers and single mechanical seals.
Five VUPX-0402 (602,312 gallons per hour at 10 feet 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 5 separate main sections. Each section is impartial from the others and consists of its personal complete water remedy system in a semi-closed loop (98 % 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 elimination of the primary suspended solid 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, prior to oxygenation and return to the fish tanks.
In each fish tank, the water is fully renewed each half an hour. The well-being of the smolts is very dependent on a constant move of water through the ability. ที่วัดแรงดันน้ำ of the recirculation pumps is, due to this fact, of paramount importance.
High general vitality efficiency of the RAS plant means a better environmental footprint and decreased working costs. Consequently, the principle elements of the water therapy loops must have top-class efficiencies, notably the recirculation pumps.
As a long-term supplier of kit (pumps and turbines) to other Nordlaks vegetation, Sulzer was concerned at an early stage of the new venture. In collaboration with the Momek Group, a big industrial service provider in Scandinavia, the pumps were carefully selected, not only to fulfil the requirements through the warranty period, however to run optimally and economically during the whole lifetime of the positioning. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex material have now been put in and are operating constantly. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied through the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By choosing to work with a trusted associate, the client made positive to get quick and everlasting technical support, in addition to the best merchandise. The recirculation pumps have the following major advantages:
Extremely high hydraulic efficiencies that by far exceed the strictest power rules for water pumps. This means huge vitality savings over time and smaller whole cost of possession, duty factors near BEP (best efficiency points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump models are working easily with minimized vibration levels. Superior-grade material is used for all wetted parts. For the choice of pump materials involved with brackish water, the long-term perspective favored duplex stainless-steel somewhat than 316SS. Duplex steels have higher design strength than austenitic stainless steels, as properly as larger corrosion, abrasion, and pitting resistance. In the tip, upkeep costs and the chance of downtime are lowered.
Sulzer is a recognized supplier within the fish farm market, with innovative and proven pumping, mixing, and aeration solutions, and offers extremely energy-efficient merchandise with low life-cycle prices and the smallest potential environmental footprint. As a fabric specialist in a variety of recent water, brackish water, seawater, and brine functions, we can provide pumps in forged iron, 316 chrome steel, duplex, tremendous duplex, SMO, and so forth. .
Water treatment system course of chart.
For extra information on Oerlikon Balzers and their household of DLC floor options, please visit

Scroll to Top