ABOUT THE CLIENT
SALMON RAS IN SWITZERLAND
The Swiss Alpine Fish is a salmon production company based in Switzerland, being one of the most modern sustainable fish farms in the world, due to their Recirculating Aquaculture System (RAS).
As one of the most modern water treatment plants for fish farms in the world, their complex RAS system is able to reduce the need for fresh water to 6.5% per day through constant water recirculation. This makes the Swiss Alpine Fish able of producing an impressive 400 tons of salmon per year under excellent sustainable conditions.
WHAT THE CLIENT NEEDED
EXTENSIVE BACTERIA CONTROL
The client needed a solution to mitigate the proliferation of unwished bacteria in their system – Pseudomonas fluorescens, while maintaining the extensive sustainability focus. This aligned perfectly with the utilization of UV technology, having numerous advantages for complex RAS systems. ULTRAAQUA has extensive experience in the aquaculture industry, and especially with UV systems for RAS.
THE SOLUTION
CORROSION-FREE UV SYSTEMS
To accommodate the bacteria issue, utilizing chemical-free UV technology was a perfect fit. This led to the installation of a MR4-220PP unit, which is able to ensure excellent protection against harmful microorganisms. The UV system is made from Polypropylene (PP) material which is optimized for RAS systems due to its excellent corrosion-resistant qualities.
After installing the UV unit, the correct bacterial flora was found after 2 months, with the fish now being protected properly with clean disinfected water. This made it possible to reduce the mortality rate drastically, while also increasing the average weight of the fish. A fantastic combination to create an increase in the production of total salmon, inevitably increasing the overall yield.
