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Nordlaks is a Norwegian totally integrated 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 largest of its kind 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 course of, all recirculation pumps have been provided 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 various capacities (92,000 to 264,000 gallons) in 5 separate main sections. Each section is impartial from the others and consists of its own 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 elimination of the primary suspended stable particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) reduction. After passing through 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 fully renewed each half an hour. The well-being of the smolts is very depending on a relentless move of water via the power. The reliability of the recirculation pumps is, therefore, of paramount importance.
High general power performance of the RAS plant means a better environmental footprint and reduced operating prices. Consequently, the principle components of the water remedy loops should have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term provider of equipment (pumps and turbines) to different Nordlaks plants, Sulzer was involved at an early stage of the brand new project. In pressure gauge หลักการ ทํา งาน with the Momek Group, a large industrial service provider in Scandinavia, the pumps had been rigorously selected, not solely to fulfil the requirements during the guarantee period, however to run optimally and economically throughout the whole lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex materials have now been put in and are operating constantly. In addition, five VUPX submersible propeller pumps are used on intermittent obligation when the fish tanks are emptied through the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
CUSTOMER BENEFIT
By choosing to work with a trusted companion, the client made positive to get fast and permanent technical support, in addition to the most effective products. The recirculation pumps have the next major benefits:
Extremely high hydraulic efficiencies that by far exceed the strictest energy rules for water pumps. This means large energy financial savings over time and smaller whole cost of possession, obligation factors close to BEP (best effectivity points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump units are working easily with minimized vibration levels. Superior-grade material is used for all wetted elements. For the selection of pump materials in touch with brackish water, the long-term perspective favored duplex chrome steel somewhat than 316SS. Duplex steels have better design strength than austenitic stainless steels, in addition to higher corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the danger of downtime are decreased.
Sulzer is a acknowledged supplier in the fish farm market, with revolutionary and confirmed pumping, mixing, and aeration options, and supplies highly energy-efficient products with low life-cycle prices and the smallest possible environmental footprint. As a fabric specialist in a variety of fresh water, brackish water, seawater, and brine applications, we are in a position to provide pumps in cast iron, 316 stainless steel, duplex, super duplex, SMO, and so forth. .
Water treatment system process chart.
FOR MORE INFORMATION
For extra data on Oerlikon Balzers and their family of DLC floor solutions, please go to https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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