| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a three-dimensional bed for plants which can prevent aquatic plants used for water purification in a lake etc. from being damaged by aquatic animals to maintain a normal inhabitation of the aquatic plants, and a water purification apparatus which uses the bed, and excellent in water purification effect. <P>SOLUTION: The three-dimensional bed for plants is used for a water purification apparatus having aquatic plants performing photosynthesis in water and a carbon dioxide gas dissolving means at a depth to which light can penetrate, and supports the aquatic plants. The three-dimensional bed has space parts each accommodating a submerged part of the aquatic plants. The submerged part of the outer and inner boundary surfaces of each space part is formed in a shape open to water by an aquatic animal intrusion preventing member for preventing the aquatic plant from being damaged by the aquatic animals. <P>COPYRIGHT: (C)2008,JPO&INPIT |
