Nordlaks is a Norwegian totally built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has lately accomplished 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 give attention to smolt welfare. The land-based facility has state-of-the-art gear for optimal biosecurity and sustainability. At the guts of the RAS process, all recirculation pumps were supplied by Sulzer.
PROJECT DATA

Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water treatment loops. เกจวัดแรงดัน -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 toes 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 5 separate main sections. Each section is unbiased from the others and includes its own complete water treatment system in a semi-closed loop (98 percent 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 main suspended stable particles. It then falls into an MBBR (moving bed biofilm reactor) for TAN (total ammonium nitrogen) discount. After passing via a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the handled water is finally pumped to some head tanks, previous 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 highly depending on a constant circulate of water through the ability. The reliability of the recirculation pumps is, subsequently, of paramount importance.
High overall power performance of the RAS plant means a better environmental footprint and reduced working prices. Consequently, the primary components of the water remedy loops will have to have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION

As a long-term provider of equipment (pumps and turbines) to different Nordlaks crops, Sulzer was concerned at an early stage of the new project. In collaboration with the Momek Group, a large industrial service provider in Scandinavia, the pumps had been fastidiously selected, not only to fulfil the necessities in the course of the guarantee interval, but to run optimally and economically during the whole lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex material have now been installed and are operating repeatedly. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied during the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT

By choosing to work with a trusted companion, the shopper made positive to get fast and permanent technical assist, along with the most effective merchandise. The recirculation pumps have the following major benefits:
Extremely excessive hydraulic efficiencies that by far exceed the strictest vitality regulations for water pumps. This means huge power savings over time and smaller total price of possession, obligation factors near BEP (best efficiency points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump units are working smoothly with minimized vibration ranges. Superior-grade materials is used for all wetted components. For the choice of pump materials involved with brackish water, the long-term perspective favored duplex chrome steel quite than 316SS. Duplex steels have better design power than austenitic stainless steels, in addition to greater corrosion, abrasion, and pitting resistance. In the top, upkeep costs and the risk of downtime are lowered.
Sulzer is a acknowledged supplier within the fish farm market, with innovative and confirmed pumping, mixing, and aeration solutions, and offers highly energy-efficient merchandise with low life-cycle costs and the smallest possible environmental footprint. As a fabric specialist in a broad range of recent water, brackish water, seawater, and brine purposes, we are in a position to provide pumps in cast iron, 316 stainless-steel, duplex, super duplex, SMO, and so forth. .
Water therapy system process chart.
FOR MORE INFORMATION

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