| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method of high concentration methane fermentation to miniaturize a methane fermenter. SOLUTION: The method of high concentration methane fermentation includes a step 5 of methane-fermenting organic waste under a reduced pressure. The organic waste is suitably selected from the group consisting of sludge of sewage, human waste sludge, animal waste, garbage and a mixture of >=2 kinds thereof. The pressure is suitably reduced to <=650 mmHg as the degree of vacuum.</p> |
