The invention relates to an
alcohol dual manufacturing technique with tuber as the main material in the
alcohol fermentation industry technique, which comprises the following steps: mixing
starch and the last anaerobic
fermentation digestive liquid; heating, liquefying and reducing the temperature by adding maxilase and mixing homogeneously; adding the last distillery slop; saccharifying by adding glucoamylase; reducing the temperature; inoculating the extended culture distillery
yeast; culturing in the constant temperature; acquiring the product
alcohol by distilling; using distillery slop as the water for the next saccharifying and adjusting acid; cooling the rest slop and inoculating the last
activated sludge in order to produce
methane with anaerobic
fermentation; recovering the
activated sludge and digestive liquid by separating anaerobic fermentation liquid; making the digestive liquid back to the proportioning procedure as the technology water; circulating sequentially. The invention only needs a step anaerobic fermentation of distillery slop, which reduces investment of
accommodation area and capital assets, can circulate anaerobic fermentation digestive liquid, achieves zero
discharge of the
wastewater from fermentation, achieves the circulation of the water resource and reduces the cost of alcohol.