作者: Yingxue Sun , Dandan Shen , Xiaoli Zhou , Na Shi , Yuan Tian
DOI: 10.1186/S40064-016-3451-3
关键词: Biofilm 、 Thauera 、 Terminal restriction fragment length polymorphism 、 Microbial population biology 、 Species evenness 、 Denitrifying bacteria 、 Environmental chemistry 、 Biology 、 Denitrification 、 Ecology 、 Dechloromonas
摘要: The treatment performance and spatial microbial community structure of three parallel denitrifying biological filters (DNBFs) operated with methanol, ethanol acetate, respectively, were explored. acetate-fed DNBF presented the highest denitrification rate NOx-N (NO2-N NO3-N) removal efficiency, while methanol-fed showed lowest carbon consumption efficiency. Distinct distribution patterns terminal restriction fragment length polymorphism fingerprints observed among DNBFs. enhanced captured biofilms throughout flowpath had diversity evenness. methanol-enhanced attached biofilm along evenness, but richness limited diversity. β-Proteobacteria was dominant in all acetate biofilm; however, different external sources resulted genera species. Thauera bacterial community, both Dechloromonas that fed. However, methylotrophic bacteria (Methyloversatilis Methylotenera) dominated exclusively methanol DNBF.