3 Methods for rapid digestion of food wastes and for methane production using three-stage methane fermentaion system

摘要

The present invention relates to a high-speed digestion of food waste and a method for producing methane therefrom, wherein the food waste pulverized into small particles is conveyed through a screw to a first semi-anaerobic hydrolysis and acid fermentation tank and air is injected into an air injection pump. Cellulomonas cellulose, Flavobacterium bribes, Bacillus amyloliquefaciens, Bacillus licheniformis, Bacillus subtilis, Bacillus alkalophilus are hydrolyzed by a combination of aerobic bacterial agents and simultaneously to anaerobic bacteria. The primary hydrolysis and acid fermentation process, which is acid fermented by the fermentation process, and the first fermented solid-liquid component are transferred by a pump through the bottom of the secondary acid fermenter in the form of an upstream anaerobic sludge blanket (UASB) and injected by Clostridium butyricum. Secondary acid fermentation process and acid fermentation, and only the liquid component of the second fermented solid-liquid components at the top of the fermenter It is composed of a third methane fermentation process in which methane is produced by methane-producing bacteria inoculated by transporting a metered pump to a third methane fermenter through a pipe down to the middle.;By using the three-stage methane fermentation system according to the present invention, when the food waste is rapidly digested and methane is produced therefrom, the fermentation time can be effectively shortened by increasing the amount of hydrolysis and acetic acid produced by the food waste, and a greater amount of methane. It is possible to produce, it is possible to obtain the effect of two-season trillion can be recycled as a clean energy for the heating of the vinyl greenhouse as well as the disposal of various organic waste.