Nordlaks is a Norwegian fully built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently completed the building of a brand new smolt facility for fish up to 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the biggest of its kind in Norway, with a special focus on smolt welfare. The land-based facility has state-of-the-art gear for optimum biosecurity and sustainability. At the guts of the RAS process, all recirculation pumps were provided by Sulzer.
PROJECT DATA
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water remedy 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 various capacities (92,000 to 264,000 gallons) in 5 separate primary sections. Each part is impartial from the others and includes its personal full water treatment system in a semi-closed loop (98 p.c recirculation plus 2 % make-up water). The brackish water from the fish tanks first flows by gravity to a rotating drum filter for the removing of the main suspended solid particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) reduction. After passing by way of a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the treated water is finally pumped to some head tanks, prior to oxygenation and return to the fish tanks.
In every fish tank, the water is absolutely renewed every half an hour. The well-being of the smolts is very depending on a constant move of water via the facility. The reliability of the recirculation pumps is, subsequently, of paramount importance.
High total power efficiency of the RAS plant means a better environmental footprint and decreased working prices. Consequently, the primary parts of the water remedy loops must have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term provider of apparatus (pumps and turbines) to different Nordlaks plants, Sulzer was concerned at an early stage of the new venture. In collaboration with the Momek Group, a large industrial service supplier in Scandinavia, the pumps had been carefully selected, not only to fulfil the requirements in the course of the warranty period, however 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 working constantly. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied in the course of the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
ร้านซ่อมเครื่องวัดความดัน
By choosing to work with a trusted associate, the client made sure to get quick and everlasting technical help, along with one of the best merchandise. The recirculation pumps have the next main benefits:
Extremely high hydraulic efficiencies that by far exceed the strictest power laws for water pumps. This means large vitality savings over time and smaller total value of possession, duty points close to BEP (best efficiency points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump items are working easily with minimized vibration ranges. Superior-grade material is used for all wetted components. For the choice of pump material in contact with brackish water, the long-term perspective favored duplex chrome steel quite than 316SS. Duplex steels have better design strength than austenitic stainless steels, as nicely as larger corrosion, abrasion, and pitting resistance. In the end, upkeep costs and the danger of downtime are lowered.
Sulzer is a recognized supplier in the fish farm market, with revolutionary and proven pumping, mixing, and aeration solutions, and provides highly energy-efficient merchandise with low life-cycle prices and the smallest attainable environmental footprint. As a material specialist in a variety of fresh water, brackish water, seawater, and brine purposes, we will offer pumps in cast iron, 316 stainless-steel, duplex, super duplex, SMO, and so forth. .
Water treatment system course of chart.
FOR MORE INFORMATION
For extra information on Oerlikon Balzers and their household of DLC floor options, please go to https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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