| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a floating island type water cleaning device whose structure is simply fabricated. <P>SOLUTION: The floating island type water cleaning device has a buoyancy applying means and a cleaning zone 3 where plants are vegetated, and is used in a state of being floatingly installed in a water cleaning zone. The buoyancy applying means is formed of a box 1 made of steel. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
