| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent an area of water to be cleaned from being affected substantially by the discharge of cleaning drainage in an apparatus for cleaning an area of water in which the drainage of a high filth concentration generated in the cleaning of a filth removing part for removing filth from raw water is discharged to the area to be cleaned. SOLUTION: The apparatus has a cleaning drainage storage part 3 in addition to the filth removing part 2, and the drainage generated in the cleaning of the filth removing part, after being stored temporarily in the storage part, is discharged to the area of water to be cleaned. In this way, organic filth contained in the drainage can be converted into inorganic substances, and various undesirable influences by the anaerobic bottom layer part of the area to be cleaned caused by returning the organic filth can be prevented.</p> |
