有机负荷对预处理液化餐厨垃圾厌氧消化性能及微生物群落的影响OA
Effect of organic loading rate on anaerobic digestion and microbial community of pretreated liquefied food waste
研究采用贝莱斯芽孢杆菌和酵母菌组成的菌剂对餐厨垃圾进行液化预处理,并结合 UASB 反应器评估预处理后餐厨垃圾在不同有机负荷下的厌氧消化性能及微生物群落动态.结果表明,液化预处理显著提高了餐厨垃圾的可生物降解性,使 UASB 反应器在有机负荷逐步增加至 10 kgCOD/(m3·d)时仍保持 95.5%的 COD 去除率,且未出现酸化和氨氮积累现象.产气性能分析显示,当有机负荷为 7.5 kgCOD/(m3·d)时,沼气产率达到最大值(0.84 kgCOD/(m3·d)),显著优于未经预处理的餐厨垃圾.微生物群落分析进一步显示,Clostridium 和Methanobacterium 在高有机负荷条件下显著富集,共同促进了厌氧消化性能的提升.研究结果为 UASB 处理液化餐厨垃圾提供了理论依据和数据支撑.
A microbial agent composed of Bacillus velezensis and yeast was utilized to perform liquefaction pretreatment of food waste,combined with a UASB reactor to evaluate the anaerobic digestion performance and microbial community dynamics of pretreated food waste under different organic loading rates(OLR).The results demonstrated that liquefaction pretreatment significantly enhanced the biodegradability of food waste,enabling the UASB reactor to maintain a COD removal efficiency of 95.5%even as the OLR increased to 10 kgCOD/(m3·d),without acidification or ammonia nitrogen accumulation.Gas production performance analysis revealed that at an OLR of 7.5 kgCOD/(m3·d),the biogas yield reached its maximum value(0.84 m3/(kgCOD·d)),significantly outperforming untreated food waste.Microbial community analysis further showed that Clostridium and Methanobacterium were significantly enriched under high OLR conditions,jointly enhancing anaerobic digestion performance.These findings provide theoretical support and data references for the UASB treatment of liquefied food waste.
葛磊;尹菲;田丽丽;张庆瑞;王名威;王菲菲
河北科技大学 环境科学与工程学院,河北 石家庄 050018河北科技大学 环境科学与工程学院,河北 石家庄 050018燕山大学 环境与化学工程学院,河北 秦皇岛 066004燕山大学 环境与化学工程学院,河北 秦皇岛 066004燕山大学 环境与化学工程学院,河北 秦皇岛 066004河北科技大学 环境科学与工程学院,河北 石家庄 050018
资源环境
有机负荷预处理液化餐厨垃圾UASB反应器厌氧消化性能微生物群落
organic loading ratepretreated liquefied food wasteUASB reactoranaerobic digestion performancemicrobial community
《燕山大学学报》 2026 (2)
169-178,10
国家自然科学基金青年科学基金资助项目(52300067)河北省自然科学基金青年科学基金资助项目(E2024203096)
评论