温度和水力停留时间对厌氧消化处理葡萄糖合成废水产甲烷动力学的影响  

Impact of temperature and hydraulic retention time on the methane production kinetics in anaerobic digestion of synthetic glucose wastewater

作　　者：李煜 王思齐 朱雅丽 李道宇 张宗钦 叶青青 李欣 Li Yu;Wang Siqi;Zhu Yali;Li Daoyu;Zhang Zongqin;Ye Qingqing;Li Xin(Key Laboratory for Clean Renewable Energy Utilization Technology,Ministry of Agriculture,College of Engineering,China Agricultural University,Beijing 100083,China)

机构地区：[1]中国农业大学工学院农业部可再生能源清洁化利用技术重点实验室,北京100083

出　　处：《可再生能源》2025年第2期165-172,共8页Renewable Energy Resources

基　　金：中国博士后面上项目(2022M713393);博士后国际交流引进项目(YJ20210197)。

摘　　要：文章阐释了厌氧消化处理葡萄糖合成废水过程中产气效率与温度和水力停留时间的关系,比较了不同温度(37,55℃)和水力停留时间(25,30,50 d)下的产气情况。结果表明,高温下葡萄糖的水解速率高于中温,但高温下挥发性脂肪酸易发生积累,尤其是丙酸。此外,中温和高温均富集了Methanomicrobiales和Methanosarcinales,表明两种温度下均存在嗜乙酸产甲烷途径和乙酸氧化途径,且乙酸氧化途径具有更强的环境耐受力。在厌氧消化处理含葡萄糖浓度较高的废水时,推荐发酵条件为中温37℃、水力停留时间30 d。The study elucidated the relationship between anaerobic digestion gas production efficiency and temperature and hydraulic retention time(HRT)using synthetic glucose wastewater as a substrate.Gas production under different temperatures(37,55℃)and HRTs(25,30,50 d)was compared.The results indicated that the hydrolysis rate of glucose was higher at thermophilic temperature than at mesophilic temperature.However,volatile fatty acids,especially propionic acid,tended to accumulate at thermophilic temperature.Additionally,Methanomicrobiaes and Methanosarcinales were enriched at both moderate and high temperatures,suggesting the presence of pathways for methane production from acetic acid and acetate oxidation at both temperatures,with the acetate oxidation pathway exhibiting greater environmental resilience.The recommended optimal fermentation conditions for treating heavy glucose-containing wastewater through anaerobic digestion are 37℃and an HRT of 30 days.

关 键 词：温度 水力停留时间 乙酸 丙酸 微生物群落结构 多元分析 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.4[农业科学—农业机械化工程] X703[农业科学—农业工程]