| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide water purification equipment capable of facilitating a recovery work of sludge settled on the under part of a contact filter media package part. <P>SOLUTION: A treatment tank 1 is divided into a plurality of divisions 21 to 29 by a plurality of damming partition walls 11, 13, 15, 17 and upper overflow partition walls 12, 14, 16, 18. The contact filter media package part 3 is prepared by packing gravelly filter media 3a in layers into the respective divisions 21 to 29 and water purification is performed by allowing water to pass among filter media 3a. A sludge storage space 4 which is divided into a plurality of divisions 41 to 45 by movable space partition walls 31 to 34 is disposed on the under side of the contact filter media package part 3, where the sludge settled in accordance with purification is settled and accumulated. When the sludge is discharged, the respective space partition walls 31 to 34 are set into the open state, therefore, the sludge storage space 4 is made to be substantially one space and, in such a condition, the sludge is discharged by a vacuum method or else. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
