| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a methane fermentation purification apparatus which smoothly circulates treated liquid and efficiently ferments methane while operating at a low cost without agitation by external motive power. <P>SOLUTION: A methane fermentation purification system includes: (1) a methane fermentation purification apparatus 1 having a methane fermenter, a lead-out pipe 3 for guiding generated methane gas to a methane gas separation part 10, and a return pipe 4 for returning a treated substance obtained by separating the methane gas, to the methane fermenter, where the upper surface of the methane fermenter is so formed that a lead-out pipe connection part is located at the highest position, the lead-out pipe 3 is connected to the return pipe 4 at a position higher than the lead-out pipe connection part, the top of the return pipe forms the methane gas separation part 10, the bottom of the return pipe communicates with the methane fermenter, and an inlet 9 for charging the substance to be treated is provided at the methane gas separation part 10 or on the top of the return pipe; (2) a gas delivery device 21 for delivering the methane gas generated in the methane fermentation purification apparatus; (3) a blowing pipe 24 provided in the methane fermenter; and (4) a methane gas extraction part 23 provided in methane gas piping 25b. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
