| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize an anaerobic biological treating method of a two phase system which keeps resistance to disturbance, such as load fluctuation, and allows a high-load treatment. SOLUTION: In the anaerobic biological treating method of the two phase system using an acid forming tank 12 and a methane forming tank 14, the reaction temperature in the acid forming tank 12 is specified to 50 to 60 deg.C and the reaction temperature in the methane forming tank 14 to 30 to 40 deg.C. More preferably, the treated water obtained in the methane forming tank 14 is partly returned to the acid forming tank 12 and the pH in the acid forming tank 12 is controlled to the range of 5.6 to 6.5.</p> |
