Method for preparing white spirit by stacking and fermenting waste vinasse on flat ground

The invention discloses a method for preparing white spirit by stacking and fermenting waste vinasse on flat ground, and belongs to the technical field of resource recycling in the wine brewing process. According to the method, waste distiller's grains, five-grain powder and bran hulls are used as raw materials, saccharifying enzyme, bacillus subtilis YTPW-105 microbial inoculum, saccharomycetes agent and yeast for making hard liquor are adopted, flat ground stacking fermentation is carried out, and it is guaranteed that the liquor yield can reach 62% (converted according to the alcoholic strength of 60.5 degrees). Wherein flat ground stacking fermentation is adopted, the method has the advantages of being simple in fermentation condition and easy to operate, consumption of manpower and material resources can be greatly reduced, and compared with traditional pit fermentation, the cost is saved by half. Meanwhile, the fermentation time of the method is 28-32 days, while the fermentation time of a traditional p