To provide a method and an apparatus for treating dredged soil, in each of which even the dredged soil having very high fine particle content and high moisture content is surely sorted, cleaned, dehydrated and solidified, so that the solidified soil can be recycled as a banking material etc.
The method for treating dredged soil comprises the steps of: deciding the addition amount of an additive material which is used for improving dehydration efficiency and is to be added to the solid content of the dredged soil constituted of fine grains having high moisture content and low sand content and comprising a large quantity of silt and clay; measuring the addition amount of the additive material to be a fixed amount; adding the measured additive material to the dredged soil and mixing them; sorting dust, small stones, sand and slurry being fine particle content having high moisture content from a mixed material, which is obtained at the preceding adding/mixing step, according to the particle size or property/state thereof; and dehydrating the slurry sorted at the preceding sorting step to obtain dehydrated cake. The dredged soil is treated through the above steps. Sand having the particle size of 1 mm and 0.075 mm or another mixed material obtained by agitating the sand, water and the slurry, the sand and water or the sand and the slurry is used as the additive material.
KONDO NORIO
IKI TSUNEHIKO
HASEGAWA HARUO
| JP2006181561A | 2006-07-13 | |||
| JP2000015018A | 2000-01-18 |
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