The RAS (Recirculated Aquaculture Systems) recirculation systems are aquaculture plants built on land that reuse water by passing it through an articulated system of mechanical and biological filters that allow the removal of organic substances. The highly sustainable nature of these operations reduces the amount of water and space needed for aquaculture.

Already in the 1980s, the University of Udine had a number of facilities for research in aquaculture, built with the knowledge and technology available at the time.
A continuous process of evolution has led today to an increasingly sustainable aquaculture, which aims to meet the growing demand that fishing can no longer cover, through recirculation systems RAS with low environmental impact,

In these plants, the purification and reuse of water not only reduces the consumption of water resources but, by reducing the release of wastewater into the environment, minimizes the environmental impact.
The filtration plant and in particular the biological filter are the fundamental fulcrum of water purification because, if well designed, they can obtain purification yields that are close to 95-96%, allowing the aerobic oxidation of nitrogenous catabolisms such as ammonium and ammonia, to nitrates.

The RAS (Recirculated Aquaculture Systems) recirculation systems are aquaculture plants built on land that reuse water by passing it through an articulated system of mechanical and biological filters that allow the removal of organic substances. The highly sustainable nature of these operations reduces the amount of water and space needed for aquaculture.
The number of RAS plants has grown exponentially year after year worldwide. The increase in RAS represents a substantial change for aquaculture as they are becoming the standard, not only for the early stages of freshwater, but also for the entire life cycle of many marine species.

RAS is a fully controlled system that offers a number of advantages and opportunities. First, it allows plants to be built close to the places where the products are consumed, at zero kilometers. Secondly, the overall health and growth of the species can be improved as the quality of the water is closely monitored to ensure optimal conditions. Some of the parameters regularly monitored include oxygen, carbon dioxide, pH, temperature, nitrite, nitrate and ammonia. Finally, RAS systems require very little water and space, which makes them much more sustainable than traditional methods.

Scubla has invested a lot of research resources in the RAS to improve their performance and the sustainability of the aquaculture sector.
We have built numerous RAS research facilities throughout Italy and the world, each of which has a unique focus.
Thanks to these consolidated experiences, the University of Udine has entrusted us with the task of designing and modernising one of their existing research facilities and equipping it with a recirculating filtration system made with state-of-the-art components and technologies.
These include: innovative filter materials, constant flow pumps, UV sterilizers, protein skimmers, ozone generators, water conditioning with titanium exchangers, mobile bed biological filters, monitoring and control panels.

The system we built in the practical tests was judged very satisfactory from all points of view, technical, aesthetic and functional.

Main advantages of our closed recirculation plants:

  • they do not require much water or space
  • they can be built almost everywhere
  • production is close to big markets
  • they reduce waste to a minimum and facilitate reuse of waste water
  • they allow to reduce labour costs
  • they provide a better control over the farming environment
  • they eliminate the risk of introducing pollutants and diseases
  • they offer protection against the elements and predators
  • they are ideal also for innovative species

Over the years, a large number of plants have become obsolete as a result of rapid technological progress and changed market needs.
With the aim of improving work conditions, hygiene, human and animal health, product quality and to limit adverse effects and enhance positive impacts on the environment, SCUBLA designs and carries out renovation works; as a matter of fact, simple actions can often lead to significant technical and economical improvements.
Whether it’s freshwater or seawater, hatchery or fattening, SCUBLA has the expertise to offer customized, eco-sustainable and high-income solutions.
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