| 摘要 |
PROBLEM TO BE SOLVED: To obtain vacuum consolidation effect by reducing the pressure inside a bag filled with sludge to negative pressure in a state where the bag is exposed to the atmosphere. SOLUTION: Sucking force is applied to a drain board 2 disposed so as to be laid under the water permeable bag 1 filled with sludge, whereby the moisture of the sludge in the bag 1 is sucked through the drain board 2 in a state where outside air can enter into the bag 1. In addition to the self-weight consolidation effect of the bag 1 containing the sludge, the vacuum consolidation effect due to a pressure difference between the atmospheric pressure and a pressure inside the bag 1 can be obtained, whereby the sludge in the bag 1 can be dewatered in a short time. COPYRIGHT: (C)2011,JPO&INPIT |
