Nordlaks is a Norwegian totally built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has just lately accomplished the building of a new smolt facility for fish as a lot as 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the biggest of its kind in Norway, with a particular focus on smolt welfare. The land-based facility has state-of-the-art tools for optimum biosecurity and sustainability. At the guts of the RAS course of, all recirculation pumps were supplied by Sulzer.
diaphragm seal 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 ft 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 five separate primary sections. Each part is independent from the others and contains its own full water treatment system in a semi-closed loop (98 % recirculation plus 2 % make-up water). The brackish water from the fish tanks first flows by gravity to a rotating drum filter for the elimination of the main suspended solid 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 absolutely renewed each half an hour. The well-being of the smolts is very depending on a relentless circulate of water via the power. The reliability of the recirculation pumps is, subsequently, of paramount importance.
High overall energy efficiency of the RAS plant means a better environmental footprint and decreased operating costs. Consequently, the primary parts of the water remedy loops must have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION

As a long-term supplier of equipment (pumps and turbines) to other Nordlaks crops, Sulzer was involved at an early stage of the model new challenge. In collaboration with the Momek Group, a large industrial service supplier in Scandinavia, the pumps had been rigorously chosen, not solely to fulfil the necessities in the course of the warranty interval, however to run optimally and economically during the whole lifetime of the location. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex materials have now been installed and are operating continuously. In addition, five VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied through the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT

By selecting to work with a trusted partner, the shopper made positive to get quick and everlasting technical support, in addition to the best products. The recirculation pumps have the next main advantages:
Extremely high hydraulic efficiencies that by far exceed the strictest vitality laws for water pumps. This means big vitality financial savings over time and smaller whole cost of ownership, obligation points close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump models are working smoothly with minimized vibration levels. Superior-grade materials is used for all wetted components. For the selection of pump materials in touch with brackish water, the long-term perspective favored duplex stainless steel quite than 316SS. Duplex steels have higher design energy than austenitic stainless steels, as nicely as larger corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the danger of downtime are reduced.
Sulzer is a acknowledged provider within the fish farm market, with innovative and proven pumping, mixing, and aeration options, and provides extremely energy-efficient products with low life-cycle costs and the smallest possible environmental footprint. As a cloth specialist in a variety of fresh water, brackish water, seawater, and brine applications, we will supply pumps in cast iron, 316 chrome steel, duplex, tremendous duplex, SMO, etc. .
Water therapy system process chart.
FOR MORE INFORMATION

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