Regeneration systems have appeared as a supplement to conventional flow-through technology. As the water supplied was increasingly taxed, fish farm operators were often dependent on being able to reduce their water consumption in order to optimize their production. However, reducing the water supply often causes problems linked to high levels of carbon dioxide in the tanks. Installing CO2 aeration systems transforms the technology from flow-through (FTS) to regeneration (FTS-R).
Three main principles:
A standard energy system is used to heat the water
Today’s CO2 aerators are much more efficient; when they are dimensioned correctly, they can maintain the level of carbon dioxide at the appropriate level as regards fish health conditions and meeting requirements from the authorities.
Water consumption in a reuse system is normally dimensioned such that the raw water requirement is 40% of that in a flow-through plant.
Water savings in FTS-R compared to FTS are approx. 60%