At the Heart of the Largest Smolt Facility in Norway

Nordlaks is a Norwegian fully integrated company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently accomplished the building of a brand new smolt facility for fish as much as 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the biggest of its type in Norway, with a special concentrate on smolt welfare. The land-based facility has state-of-the-art equipment for optimum biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps were equipped by Sulzer.
PROJECT DATA
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water treatment 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 feet of head) submersible propeller pumps (intermittent duty) for the emptying of fish tanks.
THE CHALLENGE
The Innhavet RAS plant has thirty-four fish tanks of various capacities (92,000 to 264,000 gallons) in 5 separate main sections. Each part is unbiased from the others and contains its own full water treatment 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 removing of the principle suspended strong particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) discount. 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, prior 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 extremely depending on a constant move of water through the facility. The reliability of the recirculation pumps is, due to this fact, of paramount importance.
High overall energy efficiency of the RAS plant means a greater environmental footprint and lowered operating costs. Consequently, the principle parts of the water therapy loops must have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term supplier of kit (pumps and turbines) to different Nordlaks plants, Sulzer was concerned at an early stage of the brand new project. In collaboration with the Momek Group, a large industrial service provider in Scandinavia, the pumps had been carefully selected, not only to fulfil the requirements in the course of the warranty interval, however to run optimally and economically throughout the entire lifetime of the location. 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 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 selecting to work with a trusted associate, the consumer made sure to get quick and permanent technical help, in addition to the most effective merchandise. The recirculation pumps have the following main advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest power rules for water pumps. This means large power savings over time and smaller whole price of ownership, duty factors close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump items are working smoothly with minimized vibration levels. Superior-grade material is used for all wetted elements. For Case study of pump material involved with brackish water, the long-term perspective favored duplex stainless steel quite than 316SS. Duplex steels have higher design power than austenitic stainless steels, as properly as higher corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the danger of downtime are decreased.
Sulzer is a recognized supplier in the fish farm market, with innovative and proven pumping, mixing, and aeration solutions, and supplies highly energy-efficient merchandise with low life-cycle costs and the smallest attainable environmental footprint. As a cloth specialist in a wide range of contemporary water, brackish water, seawater, and brine functions, we are able to supply pumps in cast iron, 316 stainless-steel, duplex, tremendous duplex, SMO, etc. .
Water therapy system process chart.
FOR MORE INFORMATION
For extra info 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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