| 摘要 |
PURPOSE: A gravity type integrated ballast water processing apparatus for semi-rig is provided to satisfy an international convention on standards of IMO without a separate device for treating ballast water or only with a small-sized device and to reduce a cost by minimizing an installation space and a power consumption. CONSTITUTION: A gravity type integrated ballast water processing apparatus for semi-rig(100) formed by standing multiple columns(107) a pontoon(108) and installing a drilling equipment at an upper deck(109) comprises an upper column ballast tank(110), a lower column ballast tank(120), a pontoon ballast tank(130), and an active material storage container(150). The upper column ballast tank and the lower column ballast tank are each respectively installed at an upper part and a lower part of the column. The pontoon ballast tank is installed at the pontoon. The active material storage container stores an active material capable of perishing water organisms included in ballast water and injects the active material to a ballast line(105), through which the ballast water flows. The active material storage container is installed inside an upper part of at least one of the ballast tanks. |
