餐厨垃圾、粪便和污泥联合厌氧发酵工艺优化研究  

Optimization of Anaerobic Fermentation with Mixed Material of Kitchen Waste,Faeces and Sludge

作　　者：张晨光 祝金星 王小韦 陈芳 邢巨元 谢建波 白尚尚 刘岩[4] 

机构地区：[1]北京环卫集团环境研究发展有限公司,北京100101 [2]北京市城镇生活固废综合处理与资源化工程技术研究中心,北京100101 [3]北京环境卫生工程集团有限公司,北京100101 [4]中国石油大学,北京102249

出　　处：《中国沼气》2015年第1期13-16,共4页China Biogas

基　　金：北京市科技重大专项项目(D08040600350801);国家科技支撑计划项目(2010BAC67B03)

摘　　要：TS浓度高于10%的高固体型厌氧发酵具有罐容利用率高、发酵效率高等优点,但存在厌氧消化反应器易酸化及运行不稳定等一系列关键工程难题。为解决高负荷进料带来问题,该研究采用餐厨垃圾、粪便、污泥联合消化工艺,在总固体浓度为12%的条件下进行,通过不同物料比例试验对C/N和有机负荷等关键参数进行优化.对于50℃高温厌氧发酵,餐厨垃圾∶粪便∶污泥在最优物料比条件下(湿重比为6∶1∶1)最佳水力停留时间为18天,其VS转化效率达69.7%以上,产气量达0.38 L·g-1VS。The high concentration anaerobic fermentation,e. g. TS concentration higher than10%,has the advantages of better tank utilization and high volumetric gas production etc,but it has a series of key engineering problems such as acidification and unstable operation. In order to solve the problems caused by high load feeding,a high TS concentration of 12%was applied in the anaerobic digestion with mixed material of kitchen waste,feces and sludge. The key parameters of C / N and organic loading rate were optimized by tests of different material ratio. For the anaerobic fermentation at 50 ℃,the optimal ratio of kitchen waste,feces and sludge was 6∶ 1∶ 1（ wet weight） and the optimal hydraulic retention time was 18 d.Under these optimal condition,the VS conversion efficiency was above 69. 7% and the gas production was more than 0. 38L·g^-1 VS.

关 键 词：生物质废弃物 混合厌氧发酵 原料配比 C/N 

分 类 号：TK6[动力工程及工程热物理—生物能] X705[环境科学与工程—环境工程]