The Method For Improving The Biogas Production Performance Of Wet Anaerobic Digestion Of Straw By Micro Comminution Pretreatment

摘要

#$%^&*AU2020100873A420200709.pdf#####Abstract This invention belongs to the field of anaerobic digestion of organic solid waste, and provides a method for improving the biogas production performance of wet anaerobic digestion of straw by micro comminution pretreatment. Specifically: take naturally air dried or oven dried straw (TS901%), knead and cut it into small segments. After thorough grinding and sieving, enough straw powder with a particle size of less than 1mm is obtained certainly. Inoculate it with anaerobic digested sludge with an inoculation ratio of straw VS: inoculating sludge VS=2:1, determine the volume by adding water and then adjust the pH, and make mesophilic anaerobic digestion. The results showed that after micro comminution pretreatment, the VS degradation rate increased; the anaerobic digestion cycle shortened obviously; the unit gas production doubled, the percentage of methane in biogas increased, and the scum phenomenon in traditional straw anaerobic digestion was effectively inhibited.Drawings of Descriptions 10090 - Methane Content /% Carbon Dioxide Content /% 8069. 21 71.5 70 66.1 67 60I 504033.9 32.91 30 28.43 20102-5cm Segments Particle size less than 1mm Particle Size Less Than 0.150mm ParticlSize Less Than 0075m All Experimental Groups Figure 9 5/5