厌氧消化
中层
肥料
沼气
微生物菌剂
制浆造纸工业
污水处理
污水污泥
污水污泥处理
连续搅拌釜式反应器
生物
环境科学
微生物种群生物学
生物技术
消化(炼金术)
甲烷
化学
农学
环境工程
细菌
生态学
工程类
物理化学
遗传学
色谱法
作者
Céline Lavergne,Patricia Bovio-Winkler,Claudia Etchebehere,Santiago García-Gen
标识
DOI:10.1016/j.biortech.2019.122442
摘要
The aim of this study is to assess the performance of anaerobic digestion against co-digestion systems during the start-up stages based on key process parameters and biological indicators. Two parallel experiments treating sewage sludge alone or co-digested with low concentration of pig manure (8% vol., 2–3% in COD basis) were carried out in two lab-scale CSTR at mesophilic conditions. Same inoculant and organic loading rate sequences were applied for two consecutive runs of 79 and 90 days. According to the removal efficiencies achieved, no significant differences were encountered amongst mono-digestion and co-digestion. This observation was reinforced with the analysis of the total/active microbiome, sequencing 16S rRNA genes and transcripts. The addition of a co-substrate at low concentration had a negligible effect on the total/active microbial communities; they evolved following the same pattern. This might be an advantage in order to upgrade existing wastewater treatment plants to become centralized biogas facilities.
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