摘要
由于城市有机生活垃圾成分的复杂性和厌氧消化的限速步骤的影响,导致厌氧发酵的速度比较缓慢、产气量较少和工艺不稳定等问题。文章综述了国内外有机生活垃圾的各种溶胞处理技术,如物理法、化学法、生物法及其联合处理等方法,以便改善发酵物料的性质,消除厌氧发酵的限速步骤。研究认为,通过溶胞处理能够改善有机垃圾的物理化学性质如发酵物料的溶解度、酸碱度等,提高微生物对难降解有机物的分解,增加可溶性COD和挥发性酸的浓度,优化发酵细菌的代谢途径以及产物的组成等,从而增加生物气产量,缩短水力停留时间,强化厌氧发酵过程,减轻了后续处理的负担。
The organic fraction of municipal solid waste （OFMSW） is composed of various substance and its limiting step of anaerobic digestion resulting in reducing biogas production and process stabilization. This paper reviews the pretreatment of organic solid waste for improving OFMSW characteristics eliminating anaerobic limiting-step. Treatments for improving biodegradability can be physical, chemical and biological and so on. It is considered that pretreatment could improve the physical and chemical of OFMSW characteristics, such as solubility, acidity, alkalinity, and biodegradability, and accordingly increase soluble chemical demand （COD） and volatile fatty acid （VFA）, enhancing biogas yield, reducing hydraulic retention time（HRT）, optimizing anaerobic process and releasing post-treatment.
出处
《生态环境》
CSCD
北大核心
2006年第4期862-865,共4页
Ecology and Environmnet
基金
国家发展和改革委员会第八批国债专项资金项目(2002548)
关键词
城市有机生活垃圾
溶胞处理
厌氧消化
organic fraction of municipal solid waste （OFMSW）
pretreatment
anaerobic digestion
