Method for treating ship ballast water

Details Method for treating ship ballast water Method for treating ship ballast water

2005-06-17

2009-11-17

Savage, Matthew O (Department: 1797)

Liquid purification or separation

Processes

Chemical treatment

C210S758000, C210S759000, C210S763000, C210S764000

Reexamination Certificate

active

07618545

ABSTRACT:
A method for treating ship ballast water in which organisms viable in the ship ballast water are exterminated by adding to the ship ballast water hydrogen peroxide or a compound producing hydrogen peroxide in an amount such that a hydrogen peroxide concentration comes to be 10 to 500 mg/L and at least one type selected from a ferrous ion or a compound supplying ferrous ion in an amount such that a ferrous ion concentration comes to be 0.1 to 400 mg/L, catalase in an amount such that a concentration of catalase comes to be 0.5 to 2,500 unit/L and iodine or a compound supplying iodine amount such that an iodine concentration comes to be 0.1 to 100 mg/L.

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