Nordlaks is a Norwegian absolutely built-in firm that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has just lately 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 most important of its type in Norway, with a particular give consideration to 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 had been equipped by Sulzer.
PROJECT DATA
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water therapy loops. The dry-installed single-stage overhung pumps are equipped 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 5 separate major sections. Each section is independent from the others and includes its personal full water therapy system in a semi-closed loop (98 % 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 primary 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 each fish tank, the water is absolutely renewed every half an hour. The well-being of the smolts is highly dependent on a constant circulate of water through the power. The reliability of the recirculation pumps is, due to this fact, of paramount importance.
High overall vitality efficiency of the RAS plant means a greater environmental footprint and reduced operating costs. Consequently, the main components of the water treatment loops must have top-class efficiencies, particularly the recirculation pumps.
THE SOLUTION
As a long-term supplier of equipment (pumps and turbines) to other Nordlaks plants, Sulzer was involved at an early stage of the new venture. In collaboration with the Momek Group, a big industrial service provider in Scandinavia, the pumps had been fastidiously chosen, not solely to fulfil the requirements through the warranty interval, but to run optimally and economically throughout the whole 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, 5 VUPX submersible propeller pumps are used on intermittent obligation when the fish tanks are emptied during the switch of smolts.
New Nordlaks fish farm in Innhavet, Norway.
pressure gauge น้ำมัน
By selecting to work with a trusted partner, the client made sure to get quick and permanent technical help, in addition to the most effective merchandise. The recirculation pumps have the following main advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest vitality regulations for water pumps. This means big vitality financial savings over time and smaller whole cost of possession, duty factors near BEP (best efficiency points), low rotation speeds, and inflexible baseplates grouted in concrete. The pump units are working easily 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 rather than 316SS. Duplex steels have better design energy than austenitic stainless steels, in addition to higher corrosion, abrasion, and pitting resistance. In the end, upkeep costs and the risk of downtime are lowered.
Sulzer is a acknowledged provider within the fish farm market, with revolutionary and proven pumping, mixing, and aeration solutions, and provides extremely energy-efficient merchandise with low life-cycle costs and the smallest possible environmental footprint. As a material specialist in a variety of recent water, brackish water, seawater, and brine functions, we are in a position to provide pumps in cast iron, 316 stainless-steel, duplex, super duplex, SMO, and so forth. .
Water remedy system process chart.
FOR MORE INFORMATION
For extra information on Oerlikon Balzers and their family of DLC surface options, please visit https://www.oerlikon.com/balzers/us/en/portfolio/balzers-surface-solutions/.
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