| 摘要 |
<P>PROBLEM TO BE SOLVED: To treat organic wastes at a low cost in a waste treatment system. <P>SOLUTION: In the waste treatment system, the organic wastes, such as night soil, garbage and sludge, are introduced into a methane fermentation bath 100 for anaerobic fermentation. The methane gas produced in the bath 100 is refined in a gas holder 500 and then supplied to an electric generator 600. The methane gas is used as a raw material for power generation in the generator 600. Digested liquid within the bath 100 is supplied to an electrolytic bath 100 via a flow adjustment bath 200 and a fine screen 300. In the electrolytic bath 700, the digested liquid is subjected to electrolytic treatment, by applying potentials to an electrode pair in the electrolytic bath 700 based on the electric power obtained by the generator 600. By the electrolytic treatment, nitrogen components including organic nitrogen and ammonia nitrogen, and BOD, SS and phosphorus components are removed from the digested liquid. <P>COPYRIGHT: (C)2004,JPO |
