NOVELTY - Fermenting vats assembly for compost obsolescence system of organic wastes is provided, in which the materials not easily degradable in the fermenting vat are degraded in post-aging vat by facilitating the action of aerobic microorganisms and diversifying the species of the microorganisms in the vats, and the heavy metals in leached water are relieved to supersaturate oxygen(O.D.6-8) for supplying oxygen to fermenting vat and post-aging vat, further the resultant water is utilized as cooling water or moisture controller to prevent discharging of livestock excrements outside to help the environment.    DETAILED DESCRIPTION - A fermenting vats assembly comprises fermenting vat(110), post-aging vat(120) and stirring vehicle. The fermenting vat(110) comprises laminated unit fermenting vats to ferment livestock excrements mixed with moisture controller like sawdust or rice hulls. The post-aging vat(120) comprises laminated unit post-aging vats to age incompletely fermented compost from the fermenting vat(110). The stirring vehicle is drove via rail along the walls of fermenting vat and post-aging vat in the assembly to scatter livestock excrements and to stir the contents. Both the fermentation vat(110) and the post-aging vat(120) have air feeding lines, respectively, to supply abundant air to promote the action of aerobic microorganisms. During compost obsolescence by mixing livestock excrements with moisture controller in fermenting vat(110), the leached water is discharged by means of the wavy bottom panel and vacuum pump to prevent anaerobic fermentation. The heavy metals in the leached water are relieved in the upper part of the fermenting vat(110), and then supplied with abundant air to be supersaturated with oxygen. The resultant water is used as cooling water or moisture controller for the process. After the primary compost obsolescence is performed in fermenting vat(110) for 30 days, the fermented compost is transferred to post-aging vat(120) and stays for about 60 days, in which the compost is stirred by the stirring vehicle drove in a period of 3 days via rail along the walls of fermenting vat and post-aging vat in the assembly. After the compost obsolescence in fermentation vat(110) and the post-aging vat(120), the compost is transferred by conveyer to repository.Image 1/1