Davidsson Asa, Gruvberger Christopher, Christensen Thomas H, Hansen Trine Lund, Jansen Jes la Cour
Water and Environmental Engineering at Department of Chemical Engineering, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
Waste Manag. 2007;27(3):406-14. doi: 10.1016/j.wasman.2006.02.013. Epub 2006 Apr 18.
Treating the source-separated organic fraction of municipal solid waste (SS-OFMSW) by anaerobic digestion is considered by many municipalities in Europe as an environmentally friendly means of treating organic waste and simultaneously producing methane gas. Methane yield can be used as a parameter for evaluation of the many different systems that exist for sorting and pre-treating waste. Methane yield from the thermophilic pilot scale digestion of 17 types of domestically SS-OFMSW originating from seven full-scale sorting systems was found. The samples were collected during 1 year using worked-out procedures tested statistically to ensure representative samples. Each waste type was identified by its origin and by pre-sorting, collection and pre-treatment methods. In addition to the pilot scale digestion, all samples were examined by chemical analyses and methane potential measurements. A VS-degradation rate of around 80% and a methane yield of 300-400Nm(3) CH(4)/ton VS(in) were achieved with a retention time of 15 days, corresponding to approximately 70% of the methane potential. The different waste samples gave minor variation in chemical composition and thus also in methane yield and methane potential. This indicates that sorting and collection systems in the present study do not significantly affect the amount of methane produced per VS treated.
欧洲许多城市认为，通过厌氧消化处理源头分类的城市固体废弃物有机部分（SS - OFMSW）是一种环保的有机废弃物处理方式，同时还能产生甲烷气体。甲烷产量可作为评估众多不同的垃圾分类和预处理系统的一个参数。研究发现了源自七个全规模分类系统的17种家庭源SS - OFMSW在中温试验规模消化过程中的甲烷产量。使用经过统计学测试的既定程序在1年内收集样本，以确保样本具有代表性。每种废弃物类型通过其来源以及预分类、收集和预处理方法来识别。除了试验规模消化外，所有样本都进行了化学分析和甲烷潜力测量。在停留时间为15天的情况下，VS降解率约为80%，甲烷产量为300 - 400 Nm³CH₄/吨VS（进），这大约相当于甲烷潜力的70%。不同的废弃物样本在化学成分上差异较小，因此在甲烷产量和甲烷潜力方面也差异较小。这表明本研究中的分类和收集系统不会显著影响每处理单位VS所产生的甲烷量。
