牛粪厌氧发酵动力学模型研究  

Dynamic Model of Dairy Manure Anaerobic Digestion

作　　者：李道义[1] 李树君[1] 景全荣[1] 吴丽丽[1] 燕晓辉[1] 金鑫[2] 

机构地区：[1]中国农业机械化科学研究院,北京100083 [2]中国农业大学工学院,北京100083

出　　处：《农业机械学报》2013年第S2期117-123,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国际科技合作项目(2010DFB60680)

摘　　要：建立了牛粪厌氧发酵动力学模型。模型包括水解、酸化、乙酸化和甲烷化4个反应阶段,5步生化反应和4类菌群的生长步骤,考虑了挥发性脂肪酸、氢离子和游离氨等因素对厌氧反应的抑制作用,以及发酵料液的气液平衡和离子平衡。利用该模型对牛粪批次和连续高温干式厌氧发酵实际运行进行动态模拟,模拟结果表明氨氮质量浓度、甲烷产率、pH值等与试验数据吻合较好。A mathematical model for dynamic simulation of anaerobic digestion of dairy manure was conducted.The model included an enzymatic hydrolytic step and four bacterial steps,also focused volatile fatty acid,pH value,free ammonia inhibition,plus gas-liquid equilibrium and ions equilibrium.The model was applied for the simulation of batch and continuous dry thermophilic digestion of dairy manure,and the result compared favorably with experimental data.

关 键 词：牛粪 厌氧发酵 沼气 动力学模型 

分 类 号：S216.4[农业科学—农业机械化工程]