Nordlaks is a Norwegian totally built-in company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently completed the building 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 particular focus on smolt welfare. The land-based facility has state-of-the-art gear for optimum biosecurity and sustainability. At Nest egg of the RAS course of, all recirculation pumps had been provided by Sulzer.
PROJECT DATA
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 CHALLENGE
The Innhavet RAS plant has thirty-four fish tanks of various capacities (92,000 to 264,000 gallons) in five separate major sections. Each part is independent from the others and consists of its personal full 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 elimination of the main suspended solid 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 treated water is finally pumped to some head tanks, previous to oxygenation and return to the fish tanks.
In every fish tank, the water is totally renewed each half an hour. Best -being of the smolts is very dependent on a constant move of water by way of the facility. The reliability of the recirculation pumps is, subsequently, of paramount importance.
High overall power performance of the RAS plant means a greater environmental footprint and decreased working costs. Consequently, the primary elements of the water treatment loops should have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term supplier of kit (pumps and turbines) to other Nordlaks crops, 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 have been carefully selected, not only to fulfil the requirements in the course of the warranty period, but to run optimally and economically throughout the entire lifetime of the site. For the recirculation of the brackish water, fifty AHLSTAR and BE course of pumps in duplex materials have now been installed and are operating constantly. In addition, five VUPX submersible propeller pumps are used on intermittent responsibility 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 consumer made sure to get quick and everlasting technical help, along with the most effective merchandise. The recirculation pumps have the next main advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest vitality rules for water pumps. This means huge vitality savings over time and smaller total value of possession, responsibility factors close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump models are working smoothly with minimized vibration levels. Superior-grade materials is used for all wetted elements. For the selection of pump materials in touch with brackish water, the long-term perspective favored duplex stainless steel quite than 316SS. Duplex steels have better design strength than austenitic stainless steels, in addition to greater corrosion, abrasion, and pitting resistance. In the top, upkeep prices and the risk of downtime are reduced.
Sulzer is a acknowledged supplier in the fish farm market, with progressive and confirmed pumping, mixing, and aeration options, and offers extremely energy-efficient products with low life-cycle costs and the smallest possible environmental footprint. As a material specialist in a broad range of contemporary water, brackish water, seawater, and brine applications, we will offer pumps in forged iron, 316 stainless steel, duplex, super duplex, SMO, etc. .
Water therapy system course of chart.
FOR MORE INFORMATION
For extra information on Oerlikon Balzers and their family of DLC floor solutions, please visit https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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