The settling tank

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PROBLEM TO BE SOLVED : To provide a sedimentation tank without the clogging of a drainpipe for removing earth and sand and dust mixed in water. ŽSOLUTION : The sedimentation tank is provided with a first sedimentation tank body, a dust reservoir, a second sedimentation tank body and a drainpipe, and the drainpipe for discharging water from the second sedimentation tank body to the outside is installed so as to be inclined upwards from the second sedimentation tank body side to the outside. Thus, even when the earth and sand are deposited in the drainpipe, since the earth and sand slide downwards along the inclination, they are not deposited inside the drainpipe. ŽCOPYRIGHT : (C)2008, JPO&INPIT Ž