Patent ID: 7381326
Filing Date: 2008-06-03
Classification: A01K

Abstract:
1. An aerated recirculated aquaculture system comprising: (a) a culture tank for housing live a aquaculture, said culture tank having a barrier, wherein said barrier defines a first flow path: and (b) an aeration tank including an aeration and circulation system including an aeration device configured to aerate water, said aeration tank defining a second flow path, said first flow pat and said second flow path at least partially defining a substantially closed flow path sequentially passing through said culture tank and said aeration tank, said aeration and circulation system being configured to circulate the water around said substantially closed flow path; wherein said barrier is situated in said culture tank substantially perpendicular to a common adjoining side of said culture tank and said aeration tank, said barrier situated so as to ensure that a lowest oxygenated water and a highest carbon-dioxide-saturated water, in said first flow path, returns to said aeration tank; and wherein said aeration device includes an airlift pump having a dispensing arrangement and a conduit, said conduit having a top opening and a bottom opening, said dispensing arrangement having a plurality of holes configured for enabling injection of air into the water causing a plurality of bubbles to form in said conduit, said holes substantially covering a majority of said dispensing arrangement, said dispensing arrangement having at least one opening configured to allow passage of the water through said dispensing arrangement, such that a majority of the water flowing in said second flow path passes through said dispensing arrangement between a majority of said holes.