School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
Bioresour Technol. 2014 Jul;164:354-61. doi: 10.1016/j.biortech.2014.05.007. Epub 2014 May 10.
The present study focused on establishing a multi-habitat membrane bioreactor, as well as exploring its biodiversity and succession of microbial communities. In a long-term operational period (100 days), the dissolved oxygen level of a local zone within the bioreactor decreased consistently from the original oxic state to the final anaerobic state, which led to a continuous succession of the microbial community in the bioreactor. The results revealed that the biodiversity of the microbial community in different zones simultaneously increased, with a similar microbial composition in their final successional stage. The results also indicated that the dominant species during the whole operation were distributed among 6 major phyla. At the initial operational stages, the dominant species in the anoxic-anaerobic and the oxic zones exhibited distinguished difference, whereas at the final operational stage, both zones presented nearly the same dominant microbial species and a rather similar structure in their microbial communities.
本研究旨在建立一种多栖息地膜生物反应器，并探索其微生物群落的生物多样性和演替。在一个长期运行（100 天）期间，生物反应器内一个局部区域的溶解氧水平从最初的好氧状态持续下降到最终的厌氧状态，导致生物反应器内微生物群落的持续演替。结果表明，不同区域微生物群落的生物多样性同时增加，在最终的演替阶段具有相似的微生物组成。结果还表明，整个运行过程中的优势种分布在 6 个主要门中。在初始运行阶段，缺氧-厌氧区和好氧区的优势种存在明显差异，而在最终运行阶段，两个区的优势微生物种几乎相同，微生物群落结构也非常相似。
