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 lately accomplished the constructing of a new smolt facility for fish up to 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the largest of its kind in Norway, with a special give attention to smolt welfare. The land-based facility has state-of-the-art tools for optimum biosecurity and sustainability. At the guts of the RAS process, all recirculation pumps were 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 different capacities (92,000 to 264,000 gallons) in five separate primary sections. เครื่องมือความดัน is independent from the others and contains its personal complete water remedy 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 primary suspended solid 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 fully renewed each half an hour. The well-being of the smolts is highly depending on a continuing circulate of water through the power. 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 lowered operating prices. Consequently, the principle parts of the water therapy loops must have top-class efficiencies, notably the recirculation pumps.
As a long-term supplier of apparatus (pumps and turbines) to different Nordlaks crops, Sulzer was involved at an early stage of the brand new venture. In collaboration with the Momek Group, a big industrial service supplier in Scandinavia, the pumps have been fastidiously selected, not only to fulfil the requirements in the course of the warranty interval, but to run optimally and economically throughout the entire lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex materials 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 through the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By selecting to work with a trusted partner, the client made positive to get quick and everlasting technical support, in addition to the most effective merchandise. The recirculation pumps have the following major advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest energy rules for water pumps. This means large energy savings over time and smaller complete price of ownership, duty factors close to BEP (best effectivity points), low rotation speeds, and rigid 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 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 power than austenitic stainless steels, in addition to greater corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the risk of downtime are reduced.
Sulzer is a recognized supplier in the fish farm market, with revolutionary and confirmed pumping, mixing, and aeration solutions, and provides extremely energy-efficient products with low life-cycle prices and the smallest attainable environmental footprint. As a fabric specialist in a wide range of fresh water, brackish water, seawater, and brine applications, we can provide pumps in forged iron, 316 stainless steel, duplex, tremendous duplex, SMO, and so forth. .
Water treatment system process chart.
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