Nordlaks is a Norwegian totally built-in company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has just lately completed the constructing of a 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 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 were supplied by Sulzer.
PROJECT DATA
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water therapy 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 CHALLENGE
The Innhavet RAS plant has thirty-four fish tanks of different capacities (92,000 to 264,000 gallons) in five separate major sections. Each part is impartial from the others and includes its personal full water remedy 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 removal of the principle suspended stable particles. เกจวัดแรงดันน้ำ4หุน falls into an MBBR (moving bed biofilm reactor) for TAN (total ammonium nitrogen) reduction. After passing through a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the handled water is finally pumped to some head tanks, prior to oxygenation and return to the fish tanks.
In each fish tank, the water is absolutely renewed every half an hour. The well-being of the smolts is highly dependent on a continuing circulate of water via the ability. The reliability of the recirculation pumps is, subsequently, of paramount significance.
High overall energy efficiency of the RAS plant means a greater environmental footprint and decreased working costs. Consequently, the main parts of the water therapy loops will need to have top-class efficiencies, significantly the recirculation pumps.
THE SOLUTION
As a long-term supplier of kit (pumps and turbines) to other Nordlaks crops, Sulzer was involved at an early stage of the new challenge. In collaboration with the Momek Group, a big industrial service supplier in Scandinavia, the pumps had been carefully selected, 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 course of pumps in duplex material have now been installed and are working constantly. In addition, 5 VUPX submersible propeller pumps are used on intermittent obligation when the fish tanks are emptied during the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT
By choosing to work with a trusted associate, the client made positive to get fast and everlasting technical assist, in addition to one of the best products. The recirculation pumps have the following main advantages:
Extremely high hydraulic efficiencies that by far exceed the strictest power laws for water pumps. This means big vitality financial savings over time and smaller complete value of possession, obligation factors close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump items are working easily with minimized vibration levels. Superior-grade materials is used for all wetted parts. For the selection of pump materials in contact with brackish water, the long-term perspective favored duplex chrome steel somewhat than 316SS. Duplex steels have better design energy than austenitic stainless steels, as well as larger corrosion, abrasion, and pitting resistance. In the end, maintenance costs and the risk of downtime are decreased.
Sulzer is a acknowledged supplier within the fish farm market, with progressive and proven pumping, mixing, and aeration solutions, and supplies extremely energy-efficient products with low life-cycle costs and the smallest possible environmental footprint. As a fabric specialist in a extensive range of fresh water, brackish water, seawater, and brine functions, we will supply pumps in cast iron, 316 stainless steel, duplex, tremendous duplex, SMO, etc. .
Water remedy system process chart.
FOR MORE INFORMATION
For more information on Oerlikon Balzers and their family of DLC floor solutions, please visit https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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