摘要
餐厨垃圾中有机物含量高,是理想的厌氧发酵底物。文章从接种菌来源和p H值角度,研究餐厨垃圾厌氧发酵连续产氢产甲烷的可行性,以期提高餐厨垃圾资源化利用率。结果表明,餐厨垃圾产氢阶段100℃处理30 min以沼渣和厌氧消化污泥为来源的接种菌,有利于氢气产生和提高产生气体中氢气浓度,且沼渣比污泥产气效果好,调节发酵p H值于4.5-5.5有利于氢气发酵。产氢残留物厌氧发酵产甲烷阶段,调节发酵p H值于7.0-7.5有利于沼气发酵。产氢阶段以沼渣为菌源的连续产甲烷阶段产生气体量及产生气体中甲烷浓度比以污泥为菌源的厌氧发酵效果好。
As high content of organic matter in food waste,it is an ideal substrate for anaerobic fermentation. This paper studied the feasibility of continuous production of hydrogen and methane in anaerobic fermentation of food waste from the point of view of inoculants source and p H value. The results showed that,treating of the food waste under 100℃ for 30 min and adopting anaerobic sludge and biogas residue as inoculants could improve the hydrogen production and hydrogen concentration in the hydrogen producing stage. The biogas residue as inoculants was better than the sludge. And p H of 4. 5 -5. 5. was conducive to the hydrogen production fermentation. During the stage of methane fermentation with the residue of hydrogen production stage,the p H of 7. 0 - 7. 5 was in favor. And use of biogas residues as inoculants in hydrogen stage was better than the use of sludge as the inoculants in obtaining better biogas production and methane concentration for methane production stage.
出处
《中国沼气》
北大核心
2016年第4期8-12,共5页
China Biogas
基金
江西省科技计划项目(20111BBG70012-1)
关键词
餐厨垃圾
厌氧发酵
氢气
沼气
food waste
anaerobic fermentation
hydrogen
methane
