Recirculating Aquaculture System

Recirculating aquaculture systems (RAS) are used in most of the homes, and in fish cultivation where there is limited water supply. For ammonia toxicity reduction, biofilters are used. RAS depends on biofiltration for the conversion of ammonia (NH4+ and NH3) into nitrate , which is excreted by fish. In addition to liquid waste removal of solid waste is also treated by concentrating the waste and flushing it out of the system. To obtain high production densities, the water in the system has to be reoxygenated. Oxygen is required by the fish to metabolize food and growth, so do the bacteria communities in the biofilter. pH control has to be carefully monitored and controlled. Initial step of nitrification in the biofilter consumes alkalinity and the pH of the system gets lowered. Temperature also has to be in controlled because each fish species have a preferred temperature which when altered causes negative health effects and kills the fish.

  • Track 1-1 Biofiltration
  • Track 2-2 Solids removal
  • Track 3-3 Oxygenation
  • Track 4-4 pH control
  • Track 5-5 Biosecurity

Related Conference of Agri and Aqua