| 摘要 |
PROBLEM TO BE SOLVED: To provided a method and equipment for treating organic waste which achieve reduction in power for solubilization, and which efficiently treat even organic waste of high concentration. SOLUTION: The equipment for treating organic waste is provided with a methane fermentation tank 12 methane-fermenting organic waste; and a biological denitrification equipment 13 biologically treating digested sludge 21 discharged from the methane fermentation tank, the equipment for treating organic waste is further provided with; a solubilization tank 30 solubilizing biologically-treated liquid 22 discharged from the biological denitrification equipment 13 to obtain solubilized sludge; and a solubilized sludge return line returning at least part 23 of the solubilized sludge to the methane fermentation tank 12, or to the upstream side of the tank 12. Preferably the solubilization tank 30 is composed of a colloidalization means colloidalizing mainly the biologically-treated liquid 22, and a liquefying means liquefying mainly the colloidalized treated liquid. COPYRIGHT: (C)2006,JPO&NCIPI
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