| abstract |
For the treatment of ballast water, when the ballast water is taken into the ship, the equilibrium peracetic acid and catalase are added to the ballast water, and the equilibrium peracetic acid is added in an amount of 5-50 mg / l peracetic acid. In addition, the catalase is added in such an amount that the content of hydrogen peroxide added together with the equilibrium peracetic acid in the ballast water is decomposed to less than 2 mg / l within 120 hours. For the treatment of ballast water, to empty the ballast water tank (1), the conduit (2, 3, 4, 5, 6, 7, 8) for injecting the ballast water tank and the ballast water tank A metering device for equilibrium peracetic acid (15) and catalase (16) is connected to the conduit for injecting into the ballast water tank. A device in which a reducing agent metering device (17) is connected to the conduit for emptying the ballast water tank is suitable. |