摘要
以啤酒糟作为调理剂,与贮存污泥混合进行生物干化,研究了生物干化过程中温度及水分的变化情况,细菌群落结构(门及属水平)和真菌群落结构(门及属水平)的演替规律,以及优势菌与水分及温度变化之间的关系。结果表明:在生物干化过程中堆体的温度先升高后降低,最终降至室温,在高温期时温度最高可达62.5℃;含水率逐渐下降,由最初的71.22%降至最终的54.12%;微生物群落结构处在动态变化中,在整个生物干化过程中门水平的优势细菌为Firmicutes、Proteobacteria、Bacteroidetes、Actinobacteria和Chloroflexi,在属水平的优势细菌为Ureibacillus和Bacillus;门水平的优势真菌为Ascomycota,属水平高温期的优势真菌为Pichia;微生物群落活性与水分及温度变化密切相关,且Bacillus、Ureibacillus和Pichia等嗜热菌对水分去除及物料升温起主导作用。
The beer lees was mixed with storage sludge for bio-drying in this study.The changes of temperature and water,the succes-sion of bacterial community structure(the phylum level and genus level)and fungal community structure(phylum level and genus level),and the relationship between the microbial community,water,and temperature were investigated.The results showed that the temperature increased first,then decreased,and finally decreased to the room temperature.The highest temperature was 62.5℃in the high temperature period.The moisture content gradually decreased from 71.22%at the beginning to 54.12%at the end.The mi-crobial community structure was in dynamic change.The dominant bacteria in the whole bio-drying process were Firmicutes,Proteo-bacteria,Bacteroidetes,Actinobacteria and Chloroflex(phylum level),and the dominant bacteria at the genus level were Ureibacillus and Bacillus.The dominant fungus at the phylum level was Ascomycota,and the dominant fungus at the genus level in the thermophil-ic period was Pichia.Microbial community activity was closely related to moisture and temperature changes,and thermophilic micro-organisms such as Bacillus,Ureibacillus and Pichia played a leading role in the water removal and temperature increase processes.
作者
刘甜甜
王梦菲
吴小苏
焦有权
LIU Tiantian;WANG Mengfei;WU Xiaosu;JIAO Youquan(Department of Water Conservancy and Construction Engineering,Beijing Agricultural Vocational College,Beijing 102442,China;School of Environment,Harbin Institute of Technology,Harbin 150090,China)
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2023年第2期45-53,共9页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
北京市教育委员会科技计划一般项目(KM202312448002)。
关键词
贮存污泥
细菌群落
真菌群落
水分
温度
Storage sludge
Bacterial community
Fungal community
Moisture
Temperature
