| 摘要 |
The present invention relates to a solid-state alcohol fermentation production method and involves crushing stored raw materials, using anaerobic wastewater as a moisture content regulator for regulating the moisture content of the crushed materials, adding a sufficiently-cultivated yeast seed liquid, mixing same with the materials, and beginning alcohol fermentation; after fermentation is complete, distillation is carried out, resulting in crude alcohol and distillers grains, the distillers grains undergo solid-liquid separation, the obtained wastewater (distillation wastewater) is sent into a biogas fermentation system to be fermented, resulting in biogas and anaerobic wastewater, the anaerobic wastewater is used for moisture content regulation in the next batch of crushed materials, a sufficiently-cultivated yeast seed liquid is added, alcohol fermentation is begun, and the cycle is repeated. The present invention uses biogas fermentation technology to process distillation wastewater and obtain biogas; anaerobic wastewater acts as a moisture content regulator for the materials in alcohol fermentation; the method can significantly reduce water usage in solid state alcohol fermentation, and can, in an ideal state, achieve zero discharge of produced wastewater, thus producing significant environmental and economic benefits. |
