The present invention relates to a method for composting organic wastes using Bacillus sp. Bacillus, which comprises mixing an organic waste, an aerobic bacillus germination medium and an aerobic bacillus preparation in a blender to produce an organic waste mixture, After the first composting of the organic waste mixture, the first compost of the automatic discharge amount is discharged, and every time the organic waste mixture is reproduced, some of the compost as much as the automatic discharge amount discharged from the fermentation tank is used as a substitute for the aerobic bacteriological preparation do. The present invention relates to a method for composting an organic waste mixture comprising an aerobic bacterium preparation and a method for producing a compost of an organic waste, Since it is used as a substitute for the aerobic bacterium preparation, it is possible to minimize the consumption of expensive aerobic bacteriological preparation and reduce the cost of recycling organic wastes.
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