| 摘要 |
PROBLEM TO BE SOLVED: To provide a sludge-scraping apparatus capable of carrying out reliable performance. SOLUTION: This sludge-scraping apparatus is so constituted of an apparatus body 11 made back and forth movable in a pit 5 installed in a treatment pond such as a sedimentation basin and the like and sludge scrapers 15 made changeable to a scraping posture and a turning back posture as to scrape sludge precipitated in the bottom of the pond by the sludge scrapers 15. The apparatus body 11 is formed to be long in the back and forth moving direction and a plurality of sludge scrapers 15 are so installed as to be ahead scrapers and behind scrapers in the back and forth moving direction at gaps from one another. Sludge is successively dropped to the pit 5 by the most ahead sludge scraper 15 by scraping sludge before the position of an ahead sludge scraper 15 by a behind sludge scraper 15.
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