Nordlaks is a Norwegian absolutely integrated company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently accomplished 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 biggest of its sort in Norway, with a particular concentrate on smolt welfare. The land-based facility has state-of-the-art tools for optimal biosecurity and sustainability. At the center of the RAS course of, all recirculation pumps had been provided by Sulzer.
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 Innhavet RAS plant has thirty-four fish tanks of various capacities (92,000 to 264,000 gallons) in five separate primary sections. Each part is independent from the others and contains its personal full water treatment system in a semi-closed loop (98 percent recirculation plus 2 percent make-up water). The brackish water from the fish tanks first flows by gravity to a rotating drum filter for the removal of the main suspended strong particles. เครื่องมือที่ใช้วัดความดันคือ falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) discount. After passing through a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the handled water is lastly pumped to some head tanks, previous 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 relentless circulate of water by way of the ability. The reliability of the recirculation pumps is, subsequently, of paramount significance.
High overall energy efficiency of the RAS plant means a greater environmental footprint and lowered working costs. Consequently, the main components of the water treatment loops should have top-class efficiencies, significantly the recirculation pumps.
As a long-term supplier of equipment (pumps and turbines) to different Nordlaks plants, Sulzer was concerned at an early stage of the new project. In collaboration with the Momek Group, a big industrial service supplier in Scandinavia, the pumps had been fastidiously chosen, not solely to fulfil the necessities through the guarantee period, but to run optimally and economically throughout the whole lifetime of the positioning. For the recirculation of the brackish water, fifty AHLSTAR and BE process pumps in duplex material have now been put in and are operating constantly. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied during the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By choosing to work with a trusted associate, the client made sure to get quick and everlasting technical assist, in addition to one of the best merchandise. The recirculation pumps have the next major advantages:
Extremely high hydraulic efficiencies that by far exceed the strictest power laws for water pumps. This means huge energy financial savings over time and smaller complete cost of possession, duty factors close to BEP (best efficiency points), low rotation speeds, and rigid baseplates grouted in concrete. The pump items are working easily with minimized vibration levels. Superior-grade materials is used for all wetted components. For the choice of pump material in touch with brackish water, the long-term perspective favored duplex chrome steel quite than 316SS. Duplex steels have higher design energy than austenitic stainless steels, in addition to larger corrosion, abrasion, and pitting resistance. In the end, upkeep prices and the chance of downtime are decreased.
Sulzer is a acknowledged supplier within the fish farm market, with progressive and confirmed pumping, mixing, and aeration solutions, and provides extremely energy-efficient merchandise with low life-cycle prices and the smallest possible environmental footprint. As a fabric specialist in a variety of recent water, brackish water, seawater, and brine purposes, we will offer pumps in cast iron, 316 stainless steel, duplex, super duplex, SMO, etc. .
Water treatment system process chart.
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