Module type aquaculture tank having stepwise recirculating aquaculture system

Abstract

A module type aquaculture tank having a stepwise recirculating aquaculture system according to the present disclosure may include a main fish breeding water tank including first, second, third, and fourth edges and having a square plane, an intermediate fish breeding water tank disposed adjacent to the first edge of the main fish breeding water tank, a plurality of recirculating filtration tanks arranged adjacent to each other along the third edge opposite to the first edge of the main fish breeding water tank, and an air lifting Venturi apparatus including a plurality of Venturi pipes arranged along the edges of an inside of the main fish breeding water tank and an air guide obliquely extending from an upper end of each of the plurality of Venturi pipes upward in an air spray direction.

Dependencies are inferred from the claim text.