| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a desulfurizer for a biogas capable of stably removing hydrogen sulfide without the need of using a large amount of tap water. <P>SOLUTION: The desulfurizer 1 for a biogas comprises a methane fermentation tank 2, a biological desulfurization reaction tank 3, a gas passage 11, a discharge gas passage 12, an air injection fan 21, a hydrogen sulfide sensor 31 for sensing the content of hydrogen sulfide provided in the gas passage 11, an oxygen sensor 32 for sensing the content of oxygen provided in the discharge gas passage 12, and a controller 41 connected with the hydrogen sulfide sensor 31 and the oxygen sensor 32 for controlling the air injection fan 21. The controller 41 determines the air injection amount of the air injection fan 21 from the hydrogen sulfide content sensed by the hydrogen sulfide sensor 31 and the oxygen content sensed by the oxygen sensor 32. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
