| 摘要 |
PURPOSE:To execute a treatment continuously and efficiently, by a method wherein after coarse grains and fine grains in muddy water sucked up by a pump are removed, the muddy water is stirred and the concentration in uniformed, and the muddy water with added coagulant is centrifugally divided into liquid mud and solid matter. CONSTITUTION:From muddy water sucked up by the jet pump 5 of a ladder suction pump vessel 1, coarse grains and the like are removed by a two-step vibrating screen 23 and a gravel classifier 24, and after that, the muddy water is stirred and fed into an original mud tank 30 via a concentrating tank 28. After that, into the muddy water, lime for regulating pH through a lime dissolving tank 33 and high molecular coagulant through a high molecular coagulant dissolving tank 36 are respectively added, and separation efficiency is improved. By a centrifugal separator 32, the muddy water is divided into solid matter and liquid, and the solid matter is conveyed by a belt conveyor 43, and the liquid is restored into a reservoir or the like via a divided liquid tank 45. As a result, the dredging treatment can be continuously and efficiently executed.
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