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Recirculating aquaculture systems (RAS) recycle water from the fish tanks so it can be reused. Suited to fish such as salmon, sea bass and sea bream, but also freshwater fish such as trout, this aquaculture model dramatically reduces the amount of water required to produce large volumes of fish.To maintain water quality in RAS farms, the water must be treated in a number of steps. These include the initial removal of solids, BOD and ammonia, carbon dioxide degassing and oxygenation. In raceways, for instance, the challenge lies in ensuring that the additional oxygen is evenly distributed throughout the entire raceway – and is not just concentrated at the water inlet, as this results in unhealthy fish densities at that point.
Managing variations in oxygen levels
Maintaining water quality in recycled systems
Support and expertise at all stages of the solution lifecycle
In many cases, RAS farmers rely on our application expertise to explore how SOLVOX® can impact system design in general. SOLVOX® has the potential to lower energy costs as it operates at low pressure and to reduce design effort overall by helping to displace dissolved nitrogen. In addition, we can help design downstream gas injection systems for water treatment or ozone disinfection.To suit individual needs, we offer the full range of oxygen supply modes – from cylinder to bulk deliveries, complementing these with professional services tailored to the needs of aquaculture farmers. We support our customers with end-to-end, fully engineered solutions extending from consulting through turnkey SOLVOX® installations to ongoing maintenance and support.