| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of easily and inexpensively producing an odorless fuel using a sewage sludge as a raw material even in smaller sewage treatment plants.SOLUTION: Sewage dehydrated sludge is dried for 30 minutes or more at a temperature condition of 100°C or higher or for one hour or more in a temperature condition of 60°C or higher to form dried sludge 2, the dried sludge is filled in a bag 1 formed from a malodor barrier film having gas barrier properties and thermal sealing properties, and the opening of the bag is thermally sealed, whereby the sludge fuel is produced. This fuel has an advantage in which no malodor is generated. When the storage temperature is higher, the drying condition is preferably enhanced. |
