玉米废醪与猪粪混合厌氧消化试验研究  

Experimental Study on Anaerobic Co-digestion of Corn Waste Mash and Pig Manure

作　　者：杨乐 许国芹 王昌梅[1] 柳静[1] 赵兴玲[1] 杨红[1] 吴凯[1] 梁承月 尹芳[1] 张无敌[1] YANG Le;XU Guo-qin;WANG Chang-mei;LIU Jing;ZHAO Xing-lin;YANG Hong;WU Kai;LIANG Cheng-yue;YIN Fang;ZHANG Wu-di(College of Energy and Environmental Science,Yunnan Normal University,Kunming 650500,China;Honghe University,Mengzi 661100,China)

机构地区：[1]云南师范大学,云南昆明650500 [2]红河学院,云南蒙自661100

出　　处：《云南师范大学学报（自然科学版）》2022年第3期1-6,共6页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：云南省万人计划产业技术领军人才资助项目(20191096);云南省应用基础研究青年基金资助项目(202001BA070001);云南省国际科技合作专项资助项目(202003AF140001);昆明市国际(对外)科技合作基地资助项目(GHJD-2020026);2021年虚拟仿真实验教学“基于废醪的生物质沼气工程”资助项目.

摘　　要：采用批量式发酵装置,在中温(32±1)℃条件下,探究了不同质量配比(以TS计)对玉米废醪与猪粪混合厌氧消化产甲烷的影响.结果表明混合原料产甲烷效果优于单一原料,废醪与猪粪质量配比为1∶2时产甲烷效果最好,比0∶1和1∶0组分别高37.33%和32.92%.由修正Gompertz方程拟合可知在玉米废醪中添加猪粪可有效缩短厌氧体系中微生物的适应时间.1∶0组挥发性有机酸中丙酸的积累可能是导致其产甲烷能力受限制的主要原因,而猪粪的加入可使体系形成较好的酸碱缓冲,有效避免了酸化,缩短了发酵周期.猪粪与废醪的混合可调节原料的碳氮比,通过协同作用,使混合原料的实际产甲烷量比基于单一原料计算所得的产甲烷量更高.The effect of different mass ratio(on the basis of TS)on the anaerobic digestion of methane production from waste mash and pig manure was studied in batch equipment at medium temperature(32±1)℃.The results showed that the methane-producing effect of mixed raw material was stronger than that of single raw material,and the methane-producing effect was the best when the mass ratio of corn waste mash to pig manure was 1∶2,which was 37.33%and 32.92%higher than that of 0∶1 and 1∶0 groups,respectively.According to the modified Gompertz equation fitting,adding pig manure to waste mash can effectively shorten the adaptation time of microorganisms in anaerobic system.The accumulation of propionic acid in the 1∶0 volatile organic acids may be the main reason for the limited methane-producing capacity of the system,and the addition of pig manure can form a better acid-base buffer,effectively avoid acidification and shorten the fermentation period.The mixture of pig manure and waste mash can adjust the ratio of carbon and nitrogen of raw materials,and through synergistic effect,the actual methane production of mixed raw materials is higher than the theoretical methane production calculated based on single raw material.

关 键 词：玉米废醪 猪粪 混合厌氧消化 协同作用 

分 类 号：S216.4[农业科学—农业机械化工程]