| 摘要 |
PROBLEM TO BE SOLVED: To provide a grit chamber facility the cost of which can be reduced and which can be easily maintained, and a removal method of grit using the facility. SOLUTION: The grit chamber facility is provided wherein a suction pipe 1 for sucking is disposed in grit pits 12A-12K set in the grit chamber 10, and the grit accumulated in the grit pits 12A-12K is discharged together with drain by connecting the suction pipe 1 to a discharge system 6. The discharge system 6 is composed of a vacuum pump 6' and a plurality of storage chambers 601, 602 (161, 162) serving as recovery tanks. The vacuum pump 6' is directly or indirectly connected to the downstream side of the storage chambers 601, 602 (161, 162). COPYRIGHT: (C)2011,JPO&INPIT
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