VOLUMETRIC REDUCING TREATMENT METHOD FOR DEHYDRATED CAKE AND VOLUMETRIC REDUCING TREATMENT MACHINE THEREFOR

摘要

PPROBLEM TO BE SOLVED: To provide a volumetric reducing treatment method for a dehydrated cake capable of effectively reducing the volume of the dehydrated cake containing the second class harmful substance and capable of prolonging the life of a final disposal plant for disposing the dehydrated cake, and a volumetric reducing treatment machine for the dehydrated cake. PSOLUTION: For example, the sealed water 504, which is enclosed with and confined in lumpy particles 501 that are bonds of a large number of soil particles 502 in the dehydrated cake containing the second class harmful substance such as arsenic, is mixed with an aqueous solution, which is obtained, for example, by dissolving ferric chloride, or the like, in water and contains divalent or trivalent iron ions, to unbind and open the bonds between the soil particles 502 to bring the soil particles to an easily evaporable state. PCOPYRIGHT: (C)2005,JPO&NCIPI