At the Heart of the Largest Smolt Facility in Norway

Nordlaks is a Norwegian absolutely built-in company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has just lately accomplished the building of a model new smolt facility for fish up to 1 pound at Innhavet in Hamarøy municipality. Classified (recirculating aquaculture system) fish farm is the most important of its type in Norway, with a special concentrate on smolt welfare. The land-based facility has state-of-the-art gear for optimum biosecurity and sustainability. At the center of the RAS course of, all recirculation pumps have been provided 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 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 primary sections. Each section is independent from the others and contains its own complete water remedy 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 elimination of the primary suspended stable particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) reduction. After passing via a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the treated water is finally pumped to some head tanks, previous to oxygenation and return to the fish tanks.
In each fish tank, the water is totally renewed each half an hour. The well-being of the smolts is extremely dependent on a continuing move of water via the facility. The reliability of the recirculation pumps is, therefore, of paramount significance.
High overall vitality performance of the RAS plant means a better environmental footprint and reduced operating prices. Consequently, the principle parts of the water treatment loops will must have top-class efficiencies, significantly the recirculation pumps.
As a long-term provider of kit (pumps and turbines) to other Nordlaks crops, Sulzer was concerned at an early stage of the new challenge. In collaboration with the Momek Group, a large industrial service provider in Scandinavia, the pumps were carefully chosen, not only to fulfil the requirements in the course of the guarantee interval, but to run optimally and economically during the whole lifetime of the positioning. For the recirculation of the brackish water, fifty AHLSTAR and BE course of pumps in duplex materials have now been installed and are operating continuously. In addition, 5 VUPX submersible propeller pumps are used on intermittent responsibility when the fish tanks are emptied during the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By selecting to work with a trusted associate, the shopper made certain to get quick and everlasting technical support, in addition to the most effective merchandise. The recirculation pumps have the following main benefits:
Extremely high hydraulic efficiencies that by far exceed the strictest vitality laws for water pumps. This means big energy financial savings over time and smaller whole value of possession, duty factors close to BEP (best effectivity points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump models are working smoothly with minimized vibration ranges. Superior-grade materials is used for all wetted parts. For the selection of pump material involved with brackish water, the long-term perspective favored duplex stainless steel somewhat than 316SS. Duplex steels have better design energy than austenitic stainless steels, as properly as larger corrosion, abrasion, and pitting resistance. In the top, maintenance costs and the risk of downtime are reduced.
Sulzer is a recognized supplier within the fish farm market, with progressive and proven pumping, mixing, and aeration solutions, and offers extremely energy-efficient merchandise with low life-cycle prices and the smallest possible environmental footprint. As a cloth specialist in a extensive range of recent water, brackish water, seawater, and brine functions, we can supply pumps in cast iron, 316 stainless-steel, duplex, super duplex, SMO, etc. .
Water remedy system process chart.
For more data on Oerlikon Balzers and their family of DLC surface options, please visit

Leave a Comment