接种量对泔脚发酵产氢余物甲烷化的强化研究

 以城市生活垃圾厌氧消化污泥为接种物，考察了15％、30％、45％、60％的接种量对泔脚发酵产氢余物中温（36℃）批式厌氧消化的影响。结果表明：泔脚发酵产氢余物的产沼能力随着接种量的增大而增强。结合Gompertz模型拟合结果及理论分析，60%的接种量为泔脚发酵产氢余物沼气化的最佳接种量，其沼气化的延迟时间λ、产甲烷率、生物气中甲烷的最高体积含量分别为：4.37d，388.72mL/g，80.4％。消化结束后，除产沼过程失败的15％接种量以外，厌氧消化余物的pH值在 6.70～7.00之间，这为沼气中甲烷的高体积含量（高于常规厌氧消化的最高甲烷体积含量75%）提供了证据。

Enhancive Study of Methanogenesis with Fermentative Biohydrogen Production Residue for Food Residues by Inoculation Volume

As an inoculum, the volume of anaerobic digested sludge of Municipal Solid Waste has an effect on the intermediate temperature（36℃）batch anaerobic digestion of fermentative biohydrogen production residue for food residues. The inoculation volume was 15％,30％,45％,60％， respectively. As a conclusion, the capability of methane produced increases as the inoculation volume increases. Considering the results of Gompertz model fitting, the optimum volume is 60％. In the process, the lag-phase time(λ) of biogas produced is 4.37d; The specific methane potential and the maximum volume content of methane are 388.72mL/gVS、80.4％,respectively After anaerobic digestion, the pH values of residues are 6.70～7.00, except the case of inoculation volume (15%). This states that the volume content of methane in biogas is higher than the volume (75%) of conventional anaerobic digestion.