| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a treatment method for organic waste capable of efficiently and certainly treating the organic waste containing an organic substance in a high concentration, and a treatment apparatus therefor. <P>SOLUTION: The treatment method for the organic waste includes a dehydration process for separating a mixture of the organic waste and concentrated sludge into a dehydrated separation liquid and dehydrated sludge, a methane fermentation process for subjecting the dehydrated separation liquid to a methane fermentation treatment in a methane fermentation tank to obtain a fermentation treated liquid, a membrane separation process for subjecting the fermentation treated liquid to a membrane separation treatment to obtain a membrane separation liquid and concentrated sludge and a return process for returning the concentrated sludge obtained in the membrane separation process to the dehydration process and the methane fermentation process. By returning the concentrated sludge to the dehydration process, the clogging or the like of a membrane can be prevented and, by treating the highly concentrated fermentation treated liquid, methane fermentation sludge can be sufficiently concentrated. <P>COPYRIGHT: (C)2003,JPO</p> |
