| 简介 |
To provide an apparatus for properly treating recyclable components contained in dredging sediment, and a dredging sediment treatment method for separating aggregate components such as sand and gravel contained in dredging sediment and chemically stabilizing and separating earth and sand components containing residual large amount of contaminants for recycle. The apparatus for treating dredging sediment comprises a hydrocyclone(106) for classifiyng components contained in the dredging sediment by grain size and specific gravity to discharge aggregate components having large grain and high specific gravity to outside and transfer earth and sand components having small grain and low specific gravity to a succeeding treatment facility; a coagulation/sedimentation tank(108) for injecting coagulants into the solution containing the earth and sand components of small grain and low specific gravity transported from the hydrocyclone unit to discharge the earth and sand components precipitated by coagulation and contaminants contained in the earth and sand components to outside and transfer a supernatant liquid to a succeeding treatment facility; and a flotation tank(112) for injecting pressurized water into the supernatant liquid transferred from the coagulation/sedimentation tank to return suspended solids to the coagulation/sedimentation tank or a pipe from which the supernatant liquid is transferred from the coagulation/sedimentation tank so that the suspended solids are retreated and discharge materials that are not suspended to outside. |
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