1. Evaluation of microbial diversity of activated sludge in a municipal wastewater treatment plant of northern China by high-throughput sequencing technology.
- Author
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Kong, Qiang, Wang, Zhi-Bin, Miao, Ming-Sheng, and Ni, Shou-Qing
- Subjects
MICROBIAL diversity ,ACTIVATED sludge process ,SEWAGE disposal plants ,PROTEOBACTERIA ,BACTEROIDETES - Abstract
Samples collected in summer and winter were analyzed by high-throughput sequencing technology to reveal differences in the microbial community diversity of activated sludge at different temperatures in a municipal wastewater treatment plant of Northern China. A total of 36,438 validated reads were obtained from the samples, and the bacteria belonged to 25 phyla and 139 genera. The Shannon diversity index decreased from 5.367 in summer to 5.168 in winter. During summer, the dominant phylum wasProteobacteria(50.5%), while it wasBacteroidetesduring winter (40.5%). At the genus level,Chitinophagawas most abundant during summer (8.7%), whileHaliscomenobacter(2.8%) had the greatest abundance in winter. Almost all nitrogen and phosphorus removal-related functional microbes, includingThiobacillus(denitrifying bacteria),Rhodocyclus(phosphorus-accumulating bacteria), andNitrosomonadaceae(ammonia-oxidizing bacteria), showed significantly higher abundance in summer than winter. Conversely, cryophilic microbial abundance was significantly higher in winter than summer. [ABSTRACT FROM PUBLISHER]
- Published
- 2016
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