| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for highly efficient and economical sludge treatment which can produce solid fuel having a proper calorific value by using dehydrated sewage sludge generated in a sewage treatment plant. SOLUTION: The dehydrated sewage sludge prepared by dehydrating sewage sludge obtained in the sewage treatment plant to a moisture content of 70-85%, and crushed plastic prepared by crushing it to a size of 0.1-3 mm and/or crushed waste paper prepared by crushing it to a size of 1-5 mm are mixed so that a ratio of the total amount of the crushed plastic to the crushed waste paper is 0.1-0.7 pt.wt. with respect to 1 pt.wt. of the dehydrated sewage sludge. The mixture is molded in the form of a rod having a diameter of 4-10 mm and a length of 2-7 cm, and then dried with warm air of 60-180°C. COPYRIGHT: (C)2006,JPO&NCIPI
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