中温下3种落叶厌氧发酵产气量研究  

Research on the Biogas Yield from the Anaerobic Fermentation of Fallen Leaf of Three Street Trees at Medium-temperature

作　　者：孙树贵[1] 任广鑫[1,2] 翟宁宁[1] 王诺菡[1] 霍敏[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100 [2]陕西省循环农业工程技术研究中心,陕西杨凌712100

出　　处：《安徽农业科学》2010年第19期10164-10166,共3页Journal of Anhui Agricultural Sciences

基　　金：陕西省自然科学基础研究计划项目(2009JM3004);西北农林科技大学大学生科技创新项目;国家自然科学基金项目(30700482)

摘　　要：[目的]探求几种常见行道树落叶厌氧发酵的特性,以期为解决城市行道树落叶清扫后的能源化利用提供技术储备。[方法]通过自行研究设计的可控性恒温发酵装置,以城镇绿化中3种常见行道树(三角枫、紫叶李、法国梧桐)落叶作为发酵原料,以常温厌氧发酵池的底物为接种物,在20、25、30℃3个温度条件下进行批量试验,研究3种单一原料的发酵产气特性。[结果]3种常见行道树在常温条件下大部分能够正常发酵产生沼气,且持续时间较长。在3种不同发酵原料中,三角枫产气总量最大,产气总量和产气天数随温度升高而降低,但单位干物质日平均产气量随温度升高而升高;紫叶李和梧桐的产气总量、产期天数和单位干物质日平均产气量均随温度升高而升高。[结论]对城市行道树落叶清扫后进行厌氧发酵产生沼气是可行的,且可产生较好效果。[Objective] The technical storage of the energy utilization of the fallen leaf from urban street trees was hoped through the research on the character of anaerobic fermentation of the fallen leaf from common urban street trees.[Method] The fallen leaves of three common urban street：Buerger Maple（Acer buergerianum Miq.）,Redleaf Cherry Plum（Prunus ceraifera cv.Pissardii）and London Planetree（Platanus orientalis L.）being taken as raw material,the fermentation treatment was conducted in the installation,designed by itself,under three medium-temperatures（20 ℃,25 ℃ and 30 ℃）,and its biogas yield was tested,respectively.[Result] The results showed that the biogas from the anaerobic fermentation of fallen leaf could be produced under normal temperature and its lasting fermentation period was long.In three kinds of leaves,the biogas production from Buerger Maple was largest,its gas production and fermentation period were smaller with temperature increasing,but average daily biogas yield from dry matter in unit weight were larger with temperature increasing.The gas production,fermentation period and average daily biogas yield from dry matter in unit weight of Redleaf Cherry Plum and London Planetree were larger with temperature increasing.[Conclusion] It was feasible that the fallen leaf from urban street trees was treated through the anaerobic fermentation for biogas production,which efficiency was good.

关 键 词：落叶 厌氧发酵 沼气 

分 类 号：X799[环境科学与工程—环境工程] S216.4[农业科学—农业机械化工程]