Self-regulating PHA technology offers denitrification for marine aquaculture systems
Polyhydroxyalkanotes, or PHA, biodegradable biopolymers produced from sugar fermentation, offer a potential low-maintenance denitrification method for RAS.
Heat recovery: Countercurrent approach provides greater efficiency
Increasing the heat recovery efficiency of a system can save both capital and operational costs. Contain water and keep exchangers clean.
Cavitation, the ‘pump disease’
Cavitation occurs in a centrifugal pump when the effects of low internal water pressure lead to impeller damage. Proper design and installation of pumping systems can help.
Pilot recirculation system supports lobster-farming development in Norway
An intensive-culture recirculation system for farming European lobsters has been developed, with a pilot installation in Norway.
Offshore cages survive hurricanes
Emerging offshore aquaculture projects are proving they can endure hurricane-force winds, strong waves and high currents associated with major storms.
Nursery trial compares filtration system performance in intensive raceways
The performance of Pacific white shrimp was evaluated using three filtration systems: bead filtration, foam fractionation and pressurized sand filtration.
Mixed-cell raceways offer best of two water worlds
One solution to the problems with raceways is to convert them into a series of counter-rotating mixed cells that act as hydraulically separated round tanks.
ACFK: Cobia fingerling update
After years of mutton snapper research Aquaculture Center of the Florida Keys supplied commercial operations in Puerto Rico 15,000 cobia fingerlings.
Netherlands farms tune recirculation systems to production of varied species
Because of the diversity of its recirculation systems, the Netherlands offers an opportunity to study differences in species-specific system designs.
Sustainable and profitable shrimp farming in Saudi Arabia
A team of engineers and specialists has built an intensive shrimp farm in Saudi Arabia, proving sustainability doesn’t have to adversely affect profitability.
First commercial inland farm in Florida uses zero discharge in low-salinity
OceanBoy Farms is developing a commercial inland farm for shrimp that includes a greenhouse-enclosed nursery with HDPE-lined raceways.
Super intensive recirculating eel culture systems in Taiwan
Continuous innovation of production systems can make eel culture sustainable, environmentally friendly and economically viable.
Intensive fish culture in recirculation systems in Germany
In Germany, known for its pond culture of carp and trout, closed recirculation systems are getting commercial fish farmers' attention.