| 摘要 |
PROBLEM TO BE SOLVED: To provide a ballast water treatment apparatus supplying sulfite to sea water when discharging sea water supplied with hypochlorite and stored in a ballast tank, while preventing formation of precipitate at a sulfite inlet port and keeping an appropriate injection amount of sulfite. SOLUTION: The ballast water treatment apparatus 1 includes a hypochlorite supply device 5 supplying the hypochlorite to the sea water injected into the ballast tank 7 of a ship, and a sulfite supply device 9 supplying the sulfite to the sea water when discharging the sea water supplied with the hypochlorite and stored in the ballast tank. A hypochlorite injection part 12 injecting the hypochlorite to the sea water and a sulfite injection part 12 injecting the sulfite to the sea water are commonly used. COPYRIGHT: (C)2011,JPO&INPIT
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