FluoRAS Sensor - Online organic matter for optimising recirculating aquaculture systems

Adam Hambly*, Colin Stedmon

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

504 Downloads (Pure)


FluorRAS will develop a sensor that can save recycled fish farms 30% per year in water and energy consumption for water treatment, as well as optimize nitrogen removal. The sensor will be developed in a partnership between engineers (Krüger A / S) and researchers (DTU), and the product will be made available to the entire sector through Danish Aquaculture. Global aquaculture production is expected to double within the next 15 years. Recycling technology has a great potential for supporting environmentally and economically sustainable production. However, the technology has some challenges in balancing both the maintenance of necessary water quality and water treatment costs. Loss of production due to poor water quality is expensive and can be avoided with correct sensor systems. Accumulation of dissolved organic matter and nutrients in the water reduce the effectiveness of UV treatment, is a source of nutrition for opportunistic pathogens, and reduces the effectiveness of the biofilter's removing ammonia. Modern recycling systems are therefore dependent on a network of online sensors that monitor and respond to changes in water quality, but currently there is a need for a sensor to monitor the accumulation of organic matter. FluoRAS aims to fill this gap in technology by developing an online fluorescence sensor. The sensor is based on non-destructive, online optical technology that does not require chemicals and can run continuously.
Original languageEnglish
Article numbere23957
JournalResearch Ideas and Outcomes
Publication statusPublished - 2018


  • Recirculating Aquaculture System
  • sensors
  • nitr
  • Science
  • Q

Cite this