| 摘要 |
A system for treating ballast water in ballast tanks (1) onboard vessels, said system (20) comprising: one or more ballast tanks (1), a circulation pump (22) circulating or recirculating, via a tubing, ballast water from and to the one or more ballast tanks (1); a nitrogen and/or carbon dioxide generator (21) which is connected to the tubing (22) on the delivery side of the recirculation pump (22) in such a manner that nitrogen and/or carbon dioxide can be supplied to the ballast water; and one or more nozzle heads (28) that are functionally connected to the tubing and is/are arranged in one or more ballast tanks (1), said one or more nozzle heads comprising at least one nozzle (34) for injection of the gas-containing water into the one or more ballast tanks (1); and wherein at least one nozzle (34) is configured for powered rotation about both a first and a second axis which is perpendicular or not perpendicular to the first axis to the effect that a three-dimensional mixer pattern is produced.
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