| 摘要 |
A fish breeding apparatus provided with a water circulation equipment comprises a catch unit composed of a particulate trap (2) for catching leftovers of bait and excrements contained in water, a precipitate trap (6) for accumulating a precipitate in a breeding tank to separate the precipitate and water from each other, a bait leftovers detecting sensor (5) provided on a pipe (4) for allowing communication between the particulate trap (2) and the precipitate trap (6), and a micro screen filter (7); an ammonia processing unit composed of a denitrification device (12) for denitrification of a nitrogen compound dissolved in water, a bubble surfacing device (11) for supplying air and/or ozone to generate bubbles to catch the bubbles for removal of surface-active substances in the water, an ultraviolet bactericidal device (13) for sterilization of the circulating water for breeding, a non-immersion processing unit (14) and an immersion processing unit (15), the ammonia processing unit having a function for decomposing ammonia in the water; and an aeration unit (21) for dissolving oxygen in the water. The denitrification device (12) is disposed upstream of the bubble surfacing device (11) and is provided with a branching bypass pipe (10). A combination of reasonable equipment provides a breeding apparatus which can be subjected to water quality control at low cost. <IMAGE> |
