牛粪高效厌氧发酵技术  

Technology on Improving Anaerobic Fermentation of Dairy Manure

作　　者：关正军[1] 毕兰平[1] 李文哲[1] 刘爽[1] 曹亮[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业机械学报》2013年第4期123-126,151,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2011BAD15B04);国际科技合作资助项目(2010DFB606801);哈尔滨市科技创新人才研究专项资助项目(2011RFLXN021)

摘　　要：为提高牛粪厌氧发酵的产气效率,采用牛粪发酵前固液分离和分离液中添加猪粪进行混合发酵两种方法。结果表明,对牛粪进行发酵前固液分离,降低了物料的粘度,利于微生物的传质。在牛粪分离液与稀牛粪的对比发酵试验中,分离液较稀牛粪产气量提高32.68%,甲烷产率也有较大幅度提高。牛粪分离料液和猪粪按一定比例混合可获得较好的产气效果,在试验中总固体(TS)质量分数为10.49%的混合料液产气过程稳定,产气周期相对较短,累计产气量最大为59.8 L,比TS质量分数为8.00%猪粪组提高了26.24%,比TS质量分数为8.54%混合料液组提高了43.51%。研究表明牛粪分离液与猪粪混合TS质量分数为10.49%时,可以取得较好的产气效果。In order to improve producing gas efficiency by anaerobic fermentation of the dairy manure, solid - liquid separated pretreatment of dairy manure and anaerobic co-disestion of separation liquid and pig manure were investigated. The results indicated that separation liquid separated pretreatment of dairy manure reduced the material viscosity and favored mass transfer of microorganism. In the comparative fermentation trial of dairy manure separation solution and dilute dairy manure, gas production of separated liquid was increased by 32.68% than that of diluted dairy manure and methane yield was improved by a large margin. In a proper mixture proportion of dairy manure and pig manure, a good fermentation result would be achieved. In the experiment, the process of biogas producing was stable and the cycle was relatively short at 10.49% mixture group. Furthermore, the biggest cumulative biogas production was 59.8 L. It increased by 26.24% compared with pig group （TS is 8.00% ） and 43.51% compared with mixture group （TS is 8.54% ）. The results showed that biogas yield was increased significantly under the condition of mixture composited of dairy manure and pig manure （TS is 10.49% ）.

关 键 词：牛粪 固液分离 厌氧发酵 猪粪 混合发酵 

分 类 号：S216.4[农业科学—农业机械化工程]