To facilitate the taking out of fermented refuse by providing a main body section where crude refuse is agitated and fermented with a discharge chute and an opening connected thereto and providing the bottom of this discharge chute with a treated product take-out vessel which may be put into and out of this opening.

When the crude refuse is charged as it is into the refuse feed port 27 or is charged after the crude refuse is housed into an org. fermentable bag, the crude refuse is fermented under agitation in a fermentation tank 21 and is reduced in volume as the refuse which may be utilized as compost. This crude refuse moves to a full maturity tank 22 beyond a partition plate 20. The moisture and smell in the fermentation tank 21 are delivered through a discharge pipe 30 connected from a deodorization box 29 to this deodorization box 29. One end of the inclined discharge chute 31 is connected to the full maturity tank 22. The other end thereof has the discharge port for housing the internal treated products into the treated product take-out vessel 32. The treated product take-out vessel 32 is put into and out of the opening disposed at the bottom end of the front surface of the sink, by which the taking out of the fermented crude refuse is made possible.