摘要
采用一种气液联合搅拌的新型CSTR处理新鲜奶牛粪,对比了30℃、35℃条件下不同HRT(24、20、16d)对奶牛粪厌氧消化的影响.结果表明,在35℃条件下产沼气效果较好,3个HRT的原料产气率分别为298、278、248L/kg TS,比30℃条件下分别提高了19.20%、16.81%、10.71%;容积产气率分别为0.744、0.756、0.706 m3/(m3·d),比30℃条件下分别提高了16.07%、17.03%、14.98%.然而,在甲烷含量和COD去除方面,35℃较30℃条件下没有明显提升.HRT=24d时,在30℃和35℃条件下获得最大甲烷含量,分别为57.7%、58.1%;同时获得最大COD去除率,分别为65.56%、69.94%.运用因子序列生成法得到新型CSTR处理奶牛粪的较佳工艺参数组合是T=35℃、HRT=24d、TS=6.16%.
Fresh dairy manure was anaerobically digested in a new-tape Continuous Stirred-Tank Reactor of gas-liquid combined mixing at the temperature of 30 ℃and 35 ℃ with different HRT of 24,20,16 d.The results showed that the biogas production effect was better at temperature of 35 ℃,and the specific biogas production rate were 298,278,248 L/kg TS respectively which had an increase of19.20%,16.81%,10.71% than that of 30 ℃ separately;and the volumetric biogas production rate were 0.744、0.756、0.706 m^3/（m^3·d）respectively which had an increase of 16.07%,17.03%,14.98%than that of 30 ℃ separately.However,the effect at 35 ℃ did not appeared an obvious improvement compared with 30 ℃in the aspect of CH4 content and COD degradation.The maximum methane content occurred at 24 days′HRT,57.7%,58.1% respectively under two temperatures,simultaneously,the maximum COD removal rate were obtained,65.56%,69.94%separately.Better process parameters of new-type CSTR disposing dairy manure were T=35 ℃,HRT=24 d,TS=6.16%,using factor sequence generation method.
作者
郭成
尹芳
钟顺和
李倩
蔡昌达
王昌梅
赵兴玲
吴凯
刘健峰
张无敌
GUO Cheng;YIN Fang;ZHONG Shun-he;LI Qian;CAI Chang-da;WANG Chang-mei;ZHAO Xing-ling;WU Kai;LIU Jian-feng;ZHANG Wu-di(Yunnan Normal University,K unming 650500,China;Yunnan Shunfeng Erhai Lake Environmental Protection Technology co.,Ltd,Dali 671005,China;Hangzhou Energy and Environmental Engineering co.,I.td,Hangzhou 310020,China)
出处
《云南师范大学学报（自然科学版）》
2018年第3期14-19,共6页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
云南省新能源重大专项(2015ZB001
2015ZB005)
云南省国际科技特派员(2015IA022)
云南省农村能源工程重点实验室基金(2017KF03)
西南地区可再生能源研究与开发协同创新中心项目(05300205020516009)
农业部洱海流域特大型生物天然气工程试点项目(2015)联合资助
关键词
新型CSTR
牛粪
产沼气率
COD去除率
New type CSTR
Dairy manure
Biogas production rate
COD removal rate
