在序批式反应器中通过芽孢杆菌属K5的生物强化进行城市污水处理
Municipal wastewater treatment by the bioaugmentation of Bacillus sp. K5 within a sequencing batch reactor.
作者信息
Yang Yunlong, Xie Linxiang, Tao Xin, Hu Kaihui, Huang Shaobin
机构信息
College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, CHINA.
The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, Guangdong, CHINA.
出版信息
PLoS One. 2017 Jun 8;12(6):e0178837. doi: 10.1371/journal.pone.0178837. eCollection 2017.
Artificial municipal wastewater was treated successfully by the bioaugmentation of Bacillus sp. K5 capable of simultaneous nitrification and denitrification (SND) within a sequencing batch reactor (SBR). During the long-term operation, the bioaugmentation system exhibited an excellent and steady COD and NH4+-N removal without nitrite and nitrate accumulation. The average removal efficiency for COD and NH4+-N achieved to 98% and 95%, respectively. PCR-DGGE, SEM and FISH revealed that the introduced Bacillus sp. K5 should be an important functional strain and exerted a critical influence on the structure of microbial community. qPCR analysis indicated that the strain K5 facilitated aerobic nutrients removal capabilities and SND might be the primary pathway for the nitrogen removal in the SBR. Overall, the SBR system used in our study should be very promising for the future wastewater treatment.
在序批式反应器（SBR）中，通过能够同时进行硝化和反硝化（SND）的芽孢杆菌属K5菌株的生物强化，成功处理了人工城市废水。在长期运行过程中，生物强化系统表现出优异且稳定的COD和NH4+-N去除效果，没有亚硝酸盐和硝酸盐积累。COD和NH4+-N的平均去除效率分别达到了98%和95%。PCR-DGGE、SEM和FISH表明，引入的芽孢杆菌属K5应该是一种重要的功能菌株，对微生物群落结构产生了关键影响。qPCR分析表明，菌株K5促进了好氧营养物去除能力，SND可能是SBR中氮去除的主要途径。总体而言，我们研究中使用的SBR系统在未来废水处理方面应该非常有前景。
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