| 摘要 |
<p>PROBLEM TO BE SOLVED: To decompose organic metter such as parasites, bacteria, feces or the like in seawater or fresh water by cavitation action and making the decomposed substance adhere to froth to remove them. SOLUTION: A pump unit 5 pumps up seawater from the bottom of a breeding tank 7 to supply the same to a cavitation generator 4 under pressure. The cavitation generator 4 decomposes parasites, feces, leavings of feed or the like in seawater along with air to emit them to make froth. An inclined plate 10 is arranged in front of the cavitation generator 4 and the froth gets on the inclined surface 12 of the inclined plate to rise while seawater is removed. Only a concentrated pollutant is discharged from a pollutant discharge port 11 and the discharge of the froth is accelerated by a blower 14.</p> |
