Closed Recirculating Aquaculture Systems
Closed Recirculating Aquaculture Systems (CRAS) is a system that can be managed safely by high-technology and has no pollution to environment. It is mainly made of fish tank and recirculating water treatment system including microfilter, biofilter, ozone-protein stripper, pure oxygen injection equipment and other functional units. Compared with other systems, it has some characteristics, such as higher products (>60kg products/m3), high profit rate (30% profit rate yearly), saving water and no pollution. This system can be used to seawater and freshwater aquaculture, which can also be connected with the system that grow flowers and vegetables.