PROBLEM TO BE SOLVED: To create and develop a rapid low cost novel technique in relation to treatment method of sludge with a high water content wherein the treatment method of the sludge with high water content from rivers, the bottom of a lake and a sea area is yet highly insufficient technically in our country and extremely uneconomical because the sludge is generally allowed to stand over a wide area for a month or more by sun-drying after dredging and a recent rapid treatment method is not put to practical use because expensive chemicals such as a polymeric flocculant must be used.;SOLUTION: In this treatment method, a sludge incapable of being dehydrated mechanically by centrifugal separation, or the like is mixed with a dry powder being a highly water-absorbable/water retention raw material to absorb the excess moisture of the sludge by the capillary suction force of a porous raw material to reduce apparent moisture. Further, gypsum rapidly cured even by a large amount of moisture is used to instantaneously solidify the sludge with the high water content for about 10 min. Further, processing treatment for applying a water purifying function is performed to make a solidified body with high value added at a low cost to enable a same-day treatment without taking a place.;COPYRIGHT: (C)2004,JPO
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