Nordlaks is a Norwegian fully built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has 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 largest of its type in Norway, with a particular concentrate on smolt welfare. The land-based facility has state-of-the-art tools for optimum biosecurity and sustainability. At the heart of the RAS process, all recirculation pumps had been supplied 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 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 five separate main sections. Each part is unbiased from the others and consists of its personal complete water therapy 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 removal of the primary suspended stable 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, 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 extremely depending on a continuing flow of water by way of the power. The reliability of the recirculation pumps is, therefore, of paramount significance.
High overall energy efficiency of the RAS plant means a better environmental footprint and lowered working costs. Consequently, the primary parts of the water treatment loops will have to have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term supplier of apparatus (pumps and turbines) to other Nordlaks plants, Sulzer was concerned at an early stage of the brand new project. In collaboration with the Momek Group, a big industrial service supplier in Scandinavia, the pumps had been carefully chosen, not solely to fulfil the necessities during the warranty period, but to run optimally and economically during the entire lifetime of the location. For the recirculation of the brackish water, fifty AHLSTAR and BE course of pumps in duplex material have now been put in and are working continuously. In addition, five VUPX submersible propeller pumps are used on intermittent responsibility when the fish tanks are emptied in the course of the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT
By choosing to work with a trusted partner, the consumer made certain to get fast and permanent technical support, in addition to the most effective merchandise. The recirculation pumps have the next main benefits:
Extremely excessive hydraulic efficiencies that by far exceed the strictest vitality laws for water pumps. This means big vitality financial savings over time and smaller whole value of ownership, responsibility points close to BEP (best effectivity points), low rotation speeds, and rigid baseplates grouted in concrete. spmk700 are working easily with minimized vibration levels. Superior-grade materials is used for all wetted parts. For the choice of pump material in touch with brackish water, the long-term perspective favored duplex chrome steel somewhat than 316SS. Duplex steels have higher design power than austenitic stainless steels, as nicely as greater corrosion, abrasion, and pitting resistance. In the tip, maintenance prices and the danger of downtime are decreased.
Sulzer is a recognized provider in the fish farm market, with progressive and proven pumping, mixing, and aeration solutions, and offers highly energy-efficient merchandise with low life-cycle costs and the smallest potential environmental footprint. As a material specialist in a variety of recent water, brackish water, seawater, and brine applications, we can offer pumps in forged iron, 316 chrome steel, duplex, super duplex, SMO, etc. .
Water remedy system process chart.
FOR MORE INFORMATION
For more info 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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