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 recently completed 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 largest of its kind in Norway, with a particular concentrate on smolt welfare. The land-based facility has state-of-the-art gear for optimum biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps have been equipped by Sulzer.
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water remedy loops. The dry-installed single-stage overhung pumps are equipped 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 various capacities (92,000 to 264,000 gallons) in 5 separate major sections. Each part is impartial from the others and consists of its personal complete water remedy system in a semi-closed loop (98 percent 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 elimination of the principle suspended stable particles. It then falls into an MBBR (moving mattress 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 treated water is finally pumped to some head tanks, prior to oxygenation and return to the fish tanks.
In every fish tank, the water is totally renewed every half an hour. The well-being of the smolts is extremely depending on a relentless move of water via the power. The reliability of the recirculation pumps is, due to this fact, of paramount significance.
High total power efficiency of the RAS plant means a better environmental footprint and reduced working prices. Consequently, the principle components of the water remedy loops will must have top-class efficiencies, notably the recirculation pumps.
As a long-term supplier of apparatus (pumps and turbines) to other Nordlaks vegetation, Sulzer was concerned at an early stage of the new project. In collaboration with the Momek Group, a big industrial service provider in Scandinavia, the pumps had been carefully selected, not only to fulfil the requirements in the course of the warranty interval, but to run optimally and economically throughout the entire lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex materials have now been put in and are working continuously. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied in the course of the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By selecting to work with a trusted associate, the shopper made sure to get fast and permanent technical assist, in addition to one of the best products. pressure gauge แบบ น้ำมัน have the following main benefits:
Extremely excessive hydraulic efficiencies that by far exceed the strictest energy laws for water pumps. This means huge power savings over time and smaller whole cost of ownership, responsibility points near BEP (best efficiency points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump units are working easily with minimized vibration ranges. Superior-grade materials is used for all wetted parts. For the choice of pump materials in touch with brackish water, the long-term perspective favored duplex stainless-steel rather than 316SS. Duplex steels have higher design energy than austenitic stainless steels, in addition to larger corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the chance of downtime are reduced.
Sulzer is a acknowledged supplier in the fish farm market, with progressive and confirmed pumping, mixing, and aeration solutions, and offers highly energy-efficient products with low life-cycle costs and the smallest potential environmental footprint. As a cloth specialist in a variety of fresh water, brackish water, seawater, and brine purposes, we will provide pumps in forged iron, 316 stainless steel, duplex, tremendous duplex, SMO, and so forth. .
Water remedy system process chart.
For extra information on Oerlikon Balzers and their family of DLC surface options, please go to

Leave a Comment