发酵原料混合比例对高固含量厌氧发酵的影响  

Effect of mixing ratios with different materials on high-concentration anaerobic fermentation

作　　者：李晶宇[1] 李文哲[1] 张影微[1] 吕金庆[1] 刘冰峰[2] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《东北农业大学学报》2014年第11期101-107,共7页Journal of Northeast Agricultural University

基　　金：黑龙江省教育厅科学技术研究项目(12511047);哈尔滨市应用技术研究与开发项目(2013RFQXJ094)

摘　　要：分别按餐厨废弃物、牛粪和秸秆挥发性固体(VS)比例为0:2:1、0.4:1.6:1、0.8:1.2:1、1.2:0.8:1、1.6:0.4:1、2:0:1混合形成6个试验组,各组总固体浓度(TS)均为17%,在中温(35±1)℃条件下进行厌氧发酵试验,试验进行48 d。结果表明,物料混合比例对消化效果有显著影响,VS比例为0.4:1.6:1时产气效果最佳,最高容积产气率为989 m L·L-1·d-1,产气稳定后甲烷平均含量为55.6%。随着餐厨比例增加,系统稳定性变差,当VS比例为1.2:0.8:1时,反应器中有丙酸抑制现象。当VS比例为1.6:0.4:1和2:0:1时发生酸败。The mixing ratioes of kitchen waste, cattle manure and maize straw VS ratio were 0：2：1, 0.4：1.6：1, 0.8：1.2：1, 1.2：0.8：1, 1.6：0.4：1 and 2：0：1. The test lasted 48 d which TS was 17%in （35±1）℃. The largest volumetric gas production rate was 989 mL·L^-1·d^-1, and the average content of methane was 55.6%. According to the stability of the system, gas production rate and the methane production rate, the optimal ratio of kitchen waste, cattle manure and maize straw which was 0.4：1.6：1 was determined. The greater the proportion of kitchenware, the worse the stability of the system. When the kitchen waste, cattle manure and maize straw VS ratio was 1.2：0.8：1, the phenomenon of proponic acid inhibition was found. when the kitchen waste, cattle manure and maize straw VS ratio was 1.6：0.4：1 and 2：0：1. rancidity phenomenon was found.

关 键 词：混合比例 餐厨废弃物 玉米秸秆 高固体浓度 

分 类 号：TQ920.6[轻工技术与工程—发酵工程]