CIRCULATION TYPE LAND CULTURE SYSTEM

To provide a circulation type land culture system capable of removing such a risk that growth of aquatic organisms is inhibited.SOLUTION: A circulation type land culture system 100 includes a bottomed cylindrical water tank 10 for storing breeding water A inside, a nanobubble supply device 20 for supplying nanobubbles of oxygen or air into the breeding water A, and a photocatalyst device 30 for irradiating the breeding water A taken from the water tank 10 with ultraviolet light in the presence of a photocatalyst, and thereafter returning the breeding water A into the water tank 10.SELECTED DRAWING: Figure 2 【課題】水生生物の生育が阻害されるおそれの解消を図ることが可能な循環式陸上養殖システムを提供する。【解決手段】循環式陸上養殖システム１００は、有底円筒形状であって、内部に飼育水Ａを収容する水槽１０と、飼育水１０に酸素又は空気のナノバブルを供給するナノバブル供給装置２０と、水槽１０から取水した飼育水Ａを光触媒の存在下において紫外線を照射した後に、水槽１０内に戻す光触媒装置３０とを備える。【選択図】図２