玉米秸秆与猪粪双温两相干式厌氧发酵性能研究

蒋晨光; 石岩; 张景乾; 李宁; 斯航; 穆兰

doi:10.13205/j.hjgc.202510017

玉米秸秆与猪粪双温两相干式厌氧发酵性能研究

doi: 10.13205/j.hjgc.202510017

蒋晨光¹,
石岩²,
张景乾²,
李宁³,
斯航⁴,
穆兰^2, ,

1. 天津商业大学生物技术与食品科学学院, 天津 300134;
2. 天津商业大学机械工程学院, 天津 300134;
3. 天津大学环境科学与工程学院, 天津 300350;
4. Metener公司, 赫尔辛基 41310

基金项目:

国家重点研发政府间国际科技创新合作项目“生物质干式厌氧消化制气与沼渣综合处置利用关键技术”（2022YFE0125100）

详细信息

作者简介:
蒋晨光（1999—），男，硕士研究生，主要研究方向为固体有机废弃物生物发酵能源化。dawn0608@qq.com

通讯作者:
穆兰（1992—），女，讲师，主要研究方向为固体有机废弃物生物发酵能源化。mulan@tjcu.edu.cn

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出版历程
- 收稿日期: 2024-08-21
- 录用日期: 2024-10-10
- 修回日期: 2024-09-15
- 网络出版日期: 2025-12-03
- 刊出日期: 2025-10-01

Performance of two-temperature and dual-phase dry anaerobic digestion of corn straw and pig manure

1. College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China;
2. School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China;
3. School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, China;
4. Metener Company, Helsinki 41310, Finland

摘要

摘要: 以玉米秸秆和猪粪为发酵原料，分别采用一体式和分体式两相厌氧发酵系统，考察了酸相保温与否对其干式厌氧消化产气特性、有机物降解以及微生物群落结构的影响，并对4个发酵系统能量平衡进行了计算。结果表明：全保温一体式、分体式系统的最大产甲烷潜能分别为147.9，152.2 mL/g（以VS计），而酸相不保温一体式、分体式系统的最大产气潜能分别为145.6，144.5 mL/g，2个酸相不保温系统与2个全保温系统的甲烷产量差异不明显。经过能量平衡计算，全保温一体式、分体式系统的运行能耗占总产能的29.3%和59.2%，酸相不保温一体式、分体式系统的运行能耗占系统总产能的11.0%和32.0%。综上所述，相比较于全保温系统，酸相不保温系统的产甲烷量与全保温系统差异不明显，但酸相不保温系统的净能量产出更高。
- 玉米秸秆 /
- 两相厌氧发酵 /
- 保温能耗 /
- 群落分析 /
- 能量平衡分析
Abstract: Anaerobic digestion is a process whereby a range of microorganisms convert biodegradable substrates into biogas under anaerobic conditions. Despite the prevalence of full-mixed single-phase anaerobic digestion as a dominant process in anaerobic digestion， its operating efficiency is typically low. The dual-phase anaerobic digestion process can maintain stable operation at high load， leading to a resurgence of interest in recent years. However， compared to single-phase anaerobic digestion， its constructional investment cost is higher. Consequently， the development of a cost-effective operational strategy for dual-phase anaerobic digestion represents a crucial step toward ensuring the stable operation and profitability of biogas plants. In this study， the effects of acid-phase insulation on the gas production characteristics of dry anaerobic digestion， organic matter degradation， and the structure of the microbial community， as well as the energy balance of the four fermentation systems， were investigated using corn straw and swine manure as the raw materials in integrated and separated dual-phase anaerobic fermentation systems， respectively. The findings indicated that， the fully insulated systems exhibited a maximum methane production potential of 147.9 mL/gVS and 152.2 mL/gVS， respectively， in the integrated and separated dual-phase anaerobic fermentation system. In comparison， the uninsulated acid phase system demonstrated a methane production potential of 145.6 mL/gVS and 144.5 mL/gVS， respectively， in the integnated and seperated systems. No significant difference was observed in methane yield between the four systems. During the operation of the two fully insulated systems， the highest SCOD concentrations in the biogas slurry were 16.3 g/L and 26.2 g/L， and the highest VFAs concentrations were 12.0 g/L and 11.1 g/L. While the two acid-phase uninsulated systems exhibited the highest SCOD concentrations of 18.9 g/L and 19.1 g/L， the highest VFAs concentrations were 14.2 g/L and 8.1 g/L. In terms of energy balance， the operating energy consumption of the fully insulated system represented 29.3% and 59.2% of the total production capacity， whereas， for the acid phase uninsulated system， it accounted for 11.0% and 32.0% of the total system capacity. In conclusion， while the acid phase uninsulated system demonstrated comparable methane production to the fully insulated system， it exhibited a greater net energy output. The findings of this study can serve as a reference for the construction and operation of two-temperature and dual-phase anaerobic digestion biogas projects.
- corn straw /
- two-phase anaerobic fermentation /
- energy loss /
- microbiological analysis /
- energy balancing analysis

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