| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a device for treating organic substance by utilizing a biological power generation technique capable of stably achiving <120 mg/L of BOD (Biological Oxygen Demand) being a uniform effluent standard (daily mean) based upon a Water Pollution Control Law. <P>SOLUTION: The organic substance-containing waste solution 1 is fed from a raw water storage tank 2 to the anaerobic region 5a in a biological power generator 5. On the other hand, oxygen or oxygen-containing air humidified so as to be a relative humidity of 100% is fed to the aerobic region 5b in the biological power generator 5. At this time, the oxygen or oxygen-containing air may be circulated through the aerobic region 5b in the biological power generator 5 using a pump or a fan, or may be circulated utilizing thermal convection. The organic substance-containing waste solution 1 is passed through the anaerobic region 5a while retaining its pH to a suitable range by a pH controller 8, and oxidation reaction by microorganisms having electrode activity and reduction reaction by oxygen are progressed, thus water treatment is performed simultaneously with power generation. A treated solution 6 is fed to a posttreatment tank 10 from the exhaust port of the anaerobic region 5a in the biological generator 5, so as to obtain secondarily treated water 11. <P>COPYRIGHT: (C)2007,JPO&INPIT |
