有机垃圾填埋过程产甲烷量化模型研究

垃圾填埋场产生大量甲烷，收集这些甲烷不仅可减少温室气体排放，并且可将其作为能源利用，而填埋场甲烷产量的预测是其利用过程中的首要环节. 笔者介绍并分析了现有几种有关垃圾填埋场甲烷产量预测模型的不足；并从可降解有机组分的厌氧降解机理出发，对降解主要反应方程进行量化，由此推导出产甲烷量化模型. 结果表明:每kg动物、植物、纸类和木竹类垃圾(净垃圾)分别可产生0.578，0.331，0.270和0.319 kg甲烷；在此基础上，推导出有机垃圾填埋过程产甲烷量化预测模型，验证结果显示，该模型预测结果可靠，且结构简单、参数较少、易于量化，由于在计算过程中舍弃了其他不可降解组分的含碳量，因而比现有模型更加精准. 

Study on Quantization Model of Methane Production for Organic Refuse inLandfill

Recovery and utilization of landfill biogas can not only reduce green house effect but also recover energy. The projection of the quantity of methane is the first link in the process of energy recovery. Several models with their respective disadvantages for calculating the production of methane in landfills were introduced and analyzed. Starting from the anaerobic degradation mechanisms of landfill biogas, the main reaction equations were quantified, and a methane quantization model was made. Result shows that the production of methane from animal refuse, plant refuse, waste paper and waste woods by anaerobic degradation was respectively 0.578, 0.331, 0.270 and 0.319 kg per kg by net weight. By this way, a model was made on biogas generation from landfills. And by comparing the calculation results with other models, it shows that the model, with simpler structure, less parameters and easy to quantify, can obtain reliable results. As it rejects the carbons of non-degradable components in the calculation, it is more accurate than existing models.