| 摘要 |
A process for the manufacture of biogas and a solids fraction from an organic waste feedstock is provided. The process involves thermal hydrolysis of the organic waste feedstock at a temperature from 100 to 220°C, a pressure from 5 to 20 bars, for a period of time from 15 minutes to 4 hours, to produce a hydrolysate. The hydrolysate is combined with an external balancing feedstock materials to produce a blended hydrolysate. The blended hydrolysate undergoes anaerobic digestion to produce a biogas stream and a digestate. The digestate is separated into a solids fraction and a liquid fraction, and a portion of the solids fraction is recycled for further anaerobic digestion. The biogas stream, characterized as having a methane content from between 55 to 75% by weight, and the solids fraction, are recovered. |
