| 摘要 |
PROBLEM TO BE SOLVED: To provide a precipitate removing apparatus in which the removal efficiency of a precipitate is improved by promoting the smooth precipitation/accumulation of the precipitate in a recovery ditch and preventing the diffusion of the precipitate when the precipitate is removed. SOLUTION: The precipitate recovery ditch 10 whose upper surface is opened and whose cross section is made semicircular is arranged at the bottom 1a of a sedimentation basin 1. A rotary pipe 12 having a semi-cylindrical part, with which the upper opening of the recovery ditch 10 can be opened/closed and which is held along an inner peripheral wall of the recovery ditch 10 when the upper opening of the recovery ditch is opened and forms a closed space 13 having a circular shape in the cross section in company with the recovery ditch 10 when the upper opening of the ditch is closed, is arranged to be slid freely in the peripheral direction inside the recovery ditch 10. A pipe driving mechanism is arranged for rotary driving the rotary pipe 12 between an opened position and a closed position. A high-pressure water nozzle 51 is arranged from which high pressure water is jetted into the closed space 13, so that the precipitate F closed in the closed space 13 is discharged to the outside from the end part of the recovery ditch 10. COPYRIGHT: (C)2006,JPO&NCIPI
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