微曝气强化两相餐厨垃圾厌氧消化的效果探究  

Investigation of the Effects of Micro-aeration on Enhancing Anaerobic Digestion of Two-phase Food Waste

作　　者：仇付国[1] 李爽[1] 杜艳龙 QIU Fuguo;LI Shuang;DU Yanlong(Key Laboratory of Urban Stormwater System and Water Environment of Ministry of Education,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学,城市雨水系统与水环境教育部重点实验室,北京100044

出　　处：《环境科学与技术》2025年第4期124-132,共9页Environmental Science & Technology

摘　　要：为了提高两相餐厨垃圾厌氧消化的效果,文章对两相餐厨垃圾厌氧消化中水解酸化阶段进行微曝气,探究微曝气的影响。结果表明,微曝气有效提升了厌氧消化的甲烷产量,并优化了沼气组成。在酸化阶段微曝气速率为3、9和18 mL/(g VS·min)、微曝气时间4 h条件下,与对照组相比,甲烷累积产量提高了24.4%、49.5%和12.5%,甲烷与二氧化碳的比值提升了12.0%、26.8%和19.8%。微生物群落分析显示,微曝气促进了水解菌(如厚壁菌门和互营菌门)的富集,而对古菌群落影响不显著。此外,微曝气显著增强了电子传递和辅酶F420的活性,缩短了系统迟滞期,提高了系统效率。该研究验证了微曝气技术在两相厌氧消化中的潜力,为优化餐厨垃圾处理提供了新思路。In order to improve the effect of two-phase anaerobic digestion of kitchen waste,micro-aeration was carried out in the hydrolysis and acidification stage of two-phase anaerobic digestion of kitchen waste,and the influence of microaeration was explored.The results indicated that micro-aeration effectively increased methane yield during anaerobic digestion and optimized biogas composition.Under conditions of micro-aeration rates of 3,9,and 18 mL/(g VS·min)during the acidogenesis phase for 4 hours,the cumulative methane production increased by 24.4%,49.5%,and 12.5%,respectively,compared to the control group.Additionally,the methane-to-carbon dioxide ratio improved by 12.0%,26.8%,and 19.8%.Microbial community analysis revealed that micro-aeration promoted the enrichment of hydrolytic bacteria(such as Firmicutes and Synergistetes),while having a non-significant effect on archaeal communities.Furthermore,micro-aeration significantly enhanced electron transfer and coenzyme F420 activity,shortened the system's lag phase,and improved system efficiency.This study validates the potential of micro-aeration technology in two-phase anaerobic digestion,providing a novel approach for optimizing food waste treatment.

关 键 词：厌氧消化 餐厨垃圾 微曝气 甲烷 微生物群落结构 

分 类 号：X705[环境科学与工程—环境工程]