Effects of oxygen and carbon content on nitrogen removal capacities in landfill bioreactors and response of microbial dynamics
作者： Weiqing Xu , Dong Wu , Jie Wang , Xinghua Huang , Bing Xie
DOI: 10.1007/S00253-016-7460-5
关键词: Proteobacteria 、 Acidobacteria 、 Nitrogen 、 Environmental chemistry 、 Microbial population biology 、 Biology 、 Biological Oxygen Demand Analysis 、 Anammox 、 Ecology 、 Wastewater 、 Bioreactor
摘要: In this study, landfill bioreactors were tested to treat the recalcitrant leachate-nitrogen and impacts of relevant operational parameters on its conversion comprehensively investigated. We found that highly diverse microbial community in could be substantially affected by increasing biodegradable carbon oxygen content, which led whole system's intrinsic nitrogen removal capacity from 50 70 %, meanwhile, contribution anammox was detected less than 20 %. The sequencing q-PCR results showed bioreactor dominated Proteobacteria (∼35 %) Acidobacteria (~20 %) during experiment. abundance functioning bacteria (Amx) kept at a stable level (-2.5 -2.2 log (copies/16S rRNA)) not statistically correlated bacteria. However, significant linear correlation (p < 0.05) determined between nirS Proteobacteria; amoA AOB. Redundancy analysis (RDA) suggested although can both impose effects structure, only content is determinant total removal.
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