Nordlaks is a Norwegian fully integrated company that produces, processes, and sells Atlantic salmon and rainbow trout worldwide. It has recently completed the constructing of a model new smolt facility for fish as much as 1 pound at Innhavet in Hamarøy municipality. This RAS (recirculating aquaculture system) fish farm is the biggest of its kind in Norway, with a particular concentrate on smolt welfare. The land-based facility has state-of-the-art equipment for optimal biosecurity and sustainability. At the heart of the RAS course of, all recirculation pumps have been provided by Sulzer.
Fifty AHLSTAR and BE recirculation pumps (continuous duty) in water therapy loops. The dry-installed single-stage overhung pumps are geared up with semi-open impellers and single mechanical seals.
Five VUPX-0402 (602,312 gallons per hour at 10 ft of head) submersible propeller pumps (intermittent duty) for the emptying of fish tanks.
The Innhavet RAS plant has thirty-four fish tanks of different capacities (92,000 to 264,000 gallons) in five separate primary sections. Each section is unbiased from the others and consists of its personal complete 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 removing of the main suspended stable particles. It then falls into an MBBR (moving mattress biofilm reactor) for TAN (total ammonium nitrogen) discount. After passing by way of a countercurrent degasser for the stripping of nitrogen and carbon dioxide, the treated water is lastly 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 highly dependent on a continuing flow of water via the ability. เกจวัดแรงดันco2 of the recirculation pumps is, subsequently, of paramount importance.
High general vitality efficiency of the RAS plant means a greater environmental footprint and lowered working costs. Consequently, the primary components of the water therapy loops must have top-class efficiencies, notably the recirculation pumps.
As a long-term provider of apparatus (pumps and turbines) to other Nordlaks crops, Sulzer was concerned at an early stage of the new challenge. In collaboration with the Momek Group, a big industrial service supplier in Scandinavia, the pumps have been fastidiously chosen, not only to fulfil the requirements through 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 process pumps in duplex materials have now been put in and are operating repeatedly. In addition, 5 VUPX submersible propeller pumps are used on intermittent duty when the fish tanks are emptied through the transfer of smolts.
New Nordlaks fish farm in Innhavet, Norway.
By choosing to work with a trusted companion, the consumer made sure to get quick and everlasting technical assist, along with the best merchandise. The recirculation pumps have the following main advantages:
Extremely excessive hydraulic efficiencies that by far exceed the strictest energy rules for water pumps. This means large vitality financial savings over time and smaller whole price of possession, duty points close to BEP (best effectivity points), low rotation speeds, and rigid baseplates grouted in concrete. The pump units are working easily with minimized vibration levels. Superior-grade material is used for all wetted components. For the selection of pump material in touch with brackish water, the long-term perspective favored duplex stainless steel quite than 316SS. Duplex steels have better design power than austenitic stainless steels, as nicely as larger corrosion, abrasion, and pitting resistance. In the end, maintenance prices and the chance of downtime are reduced.
Sulzer is a recognized supplier in the fish farm market, with revolutionary and proven pumping, mixing, and aeration options, and offers extremely energy-efficient merchandise with low life-cycle costs and the smallest possible environmental footprint. As a material specialist in a wide range of recent water, brackish water, seawater, and brine purposes, we will offer pumps in cast iron, 316 stainless steel, duplex, super duplex, SMO, and so forth. .
Water treatment system process chart.
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