A biological low-water-exchanging recirculating aquaculture system by swirling-skimmer filtering method

摘要

The present invention relates to a system and method for circulating low-return water using microorganisms, supplying aquaculture water containing foreign substances at a predetermined flow rate to create a vortex, and slowing the vortex to settle sedimented foreign substances to primaryly aquaculture water. A vortex filter to filter, and a skimmer filter to filter secondly by receiving the first filtered water from the vortex filter, and a secondly filtered cultured water from the skimmer filter to decompose foreign substances by using the biological action of microorganisms And a bio-filter to remove, and a grid-type water tank composed of a plurality of water tanks separated by a lattice to facilitate removal of organic matter at the bottom while being supplied with aquaculture water from which the foreign matter has been decomposed and removed by microorganisms. Sequential water vortex filter, skimmer filter, bio filter, sequential tank As may be operated in a low-exchange cycle system to supplement the lack of delivery due to evaporation in a water bath, and organic matter discharged while circulating.