Mitsui Engineering and Shipbuilding Company Limited

Syuji Ueki

Katsumi Yoshida

Takeaki Kikuchi

Jun Waki

Seiji Kino

Yasuwo Fukuyo

Kazunobu Hirao

A practical treatment apparatus for ship ballast water, which can kill aquatic organisms contained in the ballast water, is provided by being easily incorporated in an existing ballast-water system piping in a ship. In a branch pipebranched from the existing ballast-water system piping for taking in the ballast water into the ship by a first ballast pumpwith high flow-rate/low pressure and transferring it to a ballast tank, an ozone mixing device for mixing ozone generated by an ozone generator, a second ballast pumpfor discharging said ballast water with lower flow-rate/high pressure than those of said first ballast pump, a slit plateprovided on the secondary side of said second ballast pumpand having a plurality of slit-shaped openings for passing said ballast water, and a deaeration tankfor deaerating undissolved ozone from the ballast water are provided, and the apparatus is configured so that the ballast water after deaeration discharged from said deaeration tankis returned to said ballast-water system piping.

Growing community of inventors

Tokyo, Japan

Syuji Ueki