| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To remove nutritive salts by growing an aquatic plant in an arbitrary water area of lakes and marshes. <P>SOLUTION: A frame body 11 is constituted so as to house aquatic plants H capable of absorbing nutritive salts in water and formed into a shape opened up and down so as to be able to grow the aquatic plants H in the frame body 11. Buoyancy materials 12 are attached to the frame body 11 to float the frame body 11 in the vicinity of the surface of the water. The removal apparatus 1 for nutritive salts equipped with the frame body 11 and the buoyancy materials 12 is constituted so as to grow aquatic plants H in the frame body 11 while floating the frame body 11 to remove nutritive salts in water. Further, in this removal apparatus 1 for nutritive salts, a propelling device 20 for horizontally propelling the frame body 11 in the vicinity of the surface of the water is provided to the frame body 11 and can be remotely operated by a radio system. <P>COPYRIGHT: (C)2003,JPO</p> |
