| 摘要 |
<p>The present invention relates to a method for preventing, in advance, or removing, after the fact, the water color change into pink of inland waters in a closed or semi-closed coastal dredged soil dump for dumping polluted coastal dredged soil. As for the water color change into pink of inland waters possible in a condition that a pH is lower than 7 and the concentration of Mn is greater than 0.1 ppm due to the leachate of the dredged soil dump, the present invention can prevent water color change in advance in the process of dumping dredged soil or can remove the pink water color completely through a proper treatment such as an alkali treatment and a precipitation treatment of seawater of the inland waters after the color change into pink by maintaining a condition that a pH is higher than or equal to 7 or the concentration of Mn is less than or equal to 0.1 ppm.</p> |
