LFG production estimation models were reviewed and classified in detail. The default model, chemical model and dynamic model can be contained. The generalization molecular model, COD model and biodegradable model are included in the chemical model; the dynamic model composed of whole dynamic model and staged dynamic model, and the former includes zero order, first order and second order model, of which first order model includes ordinary first order, modified first order and multi phase first order model. The latter includes ordinary model and multi phase model. In staged dynamic models, the multi phase model is thought of most accurate at present, it is suggested to use to estimate gas production when having conditions or designing landfill or garbage generation. The default model is more convenient if there is no information, or contribution of LFG to greenhouse is evaluated, or when carbon emission is accounted. The staged multiphase model should be the future direction of gas production estimation.%综述了填埋气产气量的估算模型,对产气模型进行了详细分类.填埋气产气量估算模型分为缺省模型、化学模型和动力学模型3种.化学模型包括概化分子模型、COD模型和可生物降解模型;动力学模型包括总体动力学模型和分阶段动力学模型,前者包括零级、一级和二级模型,一级模型又包括普通一级、改进一级和多降解类型一级模型,后者包括普通模型和多降解类型模型.全过程分阶段动力学模型中多降解类型模型是目前产气量估算精度最高的模型,建议条件具备、设计计算时采用该模型估算;建议资料缺少、评价填埋气对温室效应贡献或核算碳排放时采用缺省模型估算.分阶段多降解类型模型是今后产气量估算研究的方向.
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