Meng Xiao-Jun, Li Hai-Bo, Cao Hong-Bin, Sheng Yu-Xing
School of Tourism and Environment, Ankang University, Ankang 725000, China.
Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
Huan Jing Ke Xue. 2016 Oct 8;37(10):3923-3930. doi: 10.13227/j.hjkx.2016.10.034.
Coking wastewater is a kind of highly toxic and refractory organic wastewater, and aerobic activated sludge, which is dominated by bacteria, determines the efficiency of coking wastewater treatment. However, the bacterial community structure of activated sludge from coking wastewater has rarely been reported. 454 sequencing technology was applied to investigate the structure and biodiversity of the bacterial community. The results of thermal cluster analysis and principal component analysis demonstrated the differences in biodiversities of different activated sludge bacterial communities. The bacterial communities were mainly composed of Proteobacteria, Planctomycetes, Acidobacteria, Candidatus Saccharibacteria, Bacteroidetes, Cyanobacteria, Actinobacteria, Chloroflexi, Firmicutes, Thaumarchaeota, Ignavibacteriae, Verrucomicrobia and Unclassified bacteria. Proteobacteria was the dominant phylum and its abundance was 36.00%-76.98%. The primary genera were and . Most of these genera were related with aromatic hydrocarbon degradation, nitrification and denitrification processes. These results provide a theoretical basis for removal mechanism of pollutants in coking wastewater.
焦化废水是一种毒性高且难降解的有机废水，以细菌为主的好氧活性污泥决定了焦化废水的处理效率。然而，关于焦化废水活性污泥的细菌群落结构鲜有报道。采用454测序技术研究细菌群落的结构和生物多样性。热聚类分析和主成分分析结果表明不同活性污泥细菌群落的生物多样性存在差异。细菌群落主要由变形菌门、浮霉菌门、酸杆菌门、候选糖菌门、拟杆菌门、蓝细菌门、放线菌门、绿弯菌门、厚壁菌门、奇古菌门、Ignavibacteriae、疣微菌门和未分类细菌组成。变形菌门是优势菌门，其丰度为36.00%-76.98%。主要属为 和 。这些属中的大多数与芳烃降解、硝化和反硝化过程有关。这些结果为焦化废水中污染物的去除机制提供了理论依据。
