Research on the Influence of Different Temperature Conditions on the Microbial Community in Anearobic-Anoxic-Oxic process on the Plateau
Huang, D.; Zhang, N.; Li, Y.; Hao, K.; zong, y.
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In order to further understand the influence of different temperature conditions in the low temperature range on the microbial community structure in the Anearobic-Anoxic-Oxic waste water treatment process on the plateau, four temperature conditions were designed in the research, including 25{degrees}C, 20{degrees}C, 15{degrees}C and 10{degrees}C. Each working condition lasted three days. Activated sludge from anaerobic tank, anoxic tank and oxic tank under each working condition was analyzed based on the 16S rRNA high-throughput sequencing technology. The result shows that the plateau temperature conditions have little influence on the level abundance of phylum. Under all conditions, Bacteroidetes, Proteobacteria and Actinobacteria are the main phyla. The abundance of nitrifying bacterium and phosphorus removal bacteria rose in the first three conditions and fell at 10 {degrees}C. The abundance of Denitrification bacteria and Nitrite oxidizing bacteria was significantly higher than that of Ammonia oxidation bacteria and Azotobacter bacteria and Phosphorus-accumulating Organisms(PAO) had an overall advantage over Glycogen-accumulating Organisms (GAO) throughout the research.
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