In a treatment device for securing an oxidant concentration to kill organisms in ballast water for a long time, storage means (23) stores a relationship between an absorbance of the water and a dissolved organic carbon concentration thereof and another relationship between the dissolved concentration and a residual oxidant concentration required after a predetermined time from the oxidant supply, to kill organisms and to suppress their regrowth in the ballast. Calculation means (24) derives the required concentration corresponding to a raw water absorbance measured by a meter (21) by referring to the relationships and calculates a target oxidant supply amount using the required concentration. For the target, control means (25) controls an oxidant supply device (5).


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    Title :

    BALLAST WATER TREATMENT DEVICE AND BALLAST WATER TREATMENT METHOD


    Additional title:

    BALLASTWASSERBEARBEITUNGSVORRICHTUNG UND BALLASTWASSERBEARBEITUNGSVERFAHREN
    DISPOSITIF ET PROCÉDÉ DE TRAITEMENT D'EAUX DE BALLAST


    Contributors:

    Publication date :

    2019-12-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C02F Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm , TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS



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