| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for treating ballast water, by which a bactericide supply amount can be suppressed to a necessary minimum level corresponding to quality of withdrawn seawater. <P>SOLUTION: A bactericide supply amount controller 6 is provided with: a UV absorption spectrometer 21 for measuring UV absorbancy of withdrawn seawater; a storage means 23 for storing a correspondence relationship between the UV absorbancy of seawater and bactericide concentration, necessary for killing treatment of living things in the seawater and for suppressing regrowth of the living things stored in a ballast tank; an operation means 24 for calculating the necessary supply amount of the bactericide, based on the correspondence relationship stored in the storage means 23 and the UV absorbancy measured by the UV absorption spectrometer 21; and a control means 25 for controlling a bactericide supply device 5 so as to supply a bactericide by the necessary supply amount of the bactericide calculated by the operation means 24. <P>COPYRIGHT: (C)2013,JPO&INPIT |
