Defining microbial community composition and seasonal variation in a sewage treatment plant in India using a down-flow hanging sponge reactor
Defining microbial community composition and seasonal variation in a sewage treatment plant in India using a down-flow hanging sponge reactor
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DOI：
10.1007/s00253-018-8864-1
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发表时间：
2018-03
影响因子：
5
通讯作者：
Naoki Nomoto;M. Hatamoto;Y. Hirakata;Muntjeer Ali;K. Jayaswal;Akinori Iguchi;T. Okubo;Masanobu Takahashi;K. Kubota;T. Tagawa;S. Uemura;Takashi Yamaguchi;H. Harada
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作者：
Naoki Nomoto;M. Hatamoto;Y. Hirakata;Muntjeer Ali;K. Jayaswal;Akinori Iguchi;T. Okubo;Masanobu Takahashi;K. Kubota;T. Tagawa;S. Uemura;Takashi Yamaguchi;H. Harada
研究了降流式悬挂式海绵（DHS）反应器中微生物群落的特点、高有机质和硫酸根离子浓度以及微生物群落组成的季节变化。反应器中与硫氧化还原有关的微生物（2-27%）和亮氨酸（7.50%）数量较多。厌氧细菌（第一层中的27-38%）也很丰富，并被发现有助于从反应器中的污水中去除有机物。通过比较辛普森指数，基于丰度的覆盖估计（ACE）指数，和跨季节（夏季/干燥，夏季/多雨，秋季/干燥，冬季/干燥）的微生物群落的物种组成，发现微生物群落的组成变化，只有在冬季。除了季节性变化的估计，微生物群落组成的差异沿着轴的DHS反应器进行了调查的第一次。虽然每种细菌的丰度沿反应器的两个轴沿着不同，在反应器中的群落组成的变化被发现是更大的沿着比DHS反应器的水平轴的垂直轴。
The characteristics of the microbial community in a practical-scale down-flow hanging sponge (DHS) reactor, high in organic matter and sulfate ion concentration, and the seasonal variation of the microbial community composition were investigated. Microorganisms related to sulfur oxidation and reduction (2–27%), as well asLeucobacter(7.50%), were abundant in the reactor. Anaerobic bacteria (27–38% in the first layer) were also in abundance and were found to contribute to the removal of organic matter from the sewage in the reactor. By comparing the Simpson index, the abundance-based coverage estimator (ACE) index, and the species composition of the microbial community across seasons (summer/dry, summer/rainy, autumn/dry, and winter/dry), the microbial community was found to change in composition only during the winter season. In addition to the estimation of seasonal variation, the difference in the microbial community composition along the axes of the DHS reactor was investigated for the first time. Although the abundance of each bacterial species differed along both axes of the reactor, the change of the community composition in the reactor was found to be greater along the vertical axis than the horizontal axis of the DHS reactor.