Abstract
In this paper, problems created by the discharge of ship ballast water and the worldwide movement to address these problems are presented, and various methods of ballast water treatment are introduced. The treatment principle and an application example of JFE BallastAce®, which consists of a filter, an active substance and Venturi tubes, as well as injection control of active substance are described. The methods and results of both land based tests and onboard tests, which are required to gain the type approval, are introduced. A brief introduction of the first commercial application of JFE BallastAce® is also presented. Above stated series of test results confirm that JFE BallastAce® completely satisfies D2 discharge regulation3).
