| 摘要 |
PROBLEM TO BE SOLVED: To provide a new technique capable of rapidly decreasing the amounts of organic wastes, such as sludge, with saving of energy without using artificial heating means at all. SOLUTION: The method of treating the organic wastes comprises supplying the organic wastes, such as organic sludge, to a multistage aeration mixing vessel, raising the temperature in the vessel by the heat of the biooxidation of the supplied organic matter through oxygen-containing gas higher by >=40 deg.C than the temperature of the supplied matter and circulating the sludge from the rear stage vessel to the front stage vessel of the multistage aeration mixing vessel. The treatment equipment for the organic wastes has the multistage aeration mixing vessel which is introduced with the organic wastes, has oxygen- containing gas supplying means and raises the temperature in the vessel higher by >=40 deg.C than the temperature of the supplied matter and the equipment is provided with piping for circulating the sludge from the rear stage vessel to the front stage vessel of the multistage aeration mixing vessel.
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