| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water cleaning system which can efficiently supply oxygen over a wide area. <P>SOLUTION: In a water area having density stratifications (areas stratified by density difference) different in water temperature, salt concentration, or concentration of suspended solids, the water purification system has a suction means that sucks water in a water mass where concentration of dissolved oxygen has to be improved, a discharge means that dissolve oxygen into the sucked water and discharge the oxygen-dissolving water to the water mass from which the water has been sucked, and detectors that detect physical phenomena in the water area, and a plurality of the detectors are disposed in the water depth direction so as to include at least two points to be improved, different in density. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
