The Changes of Pollutants and Microbial Community Structures of the Activated Sludge in Response to Different Temperature Levels in Tibet of China

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Xu, Jin^1,2 ; Li, Shuwen^3

Tibet Agricultural and Animal Husbandry College, Tibet Nyingtri

860000, China^1

Ministry of Education, Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, College of Environment, Hohai University, NaNJing

210098, China^2

Jiangsu Universities of Science and Technology, Jiangsu Zhenjiang

212003, China^3

关键词: Activated sludge;    Microbial community structures;    Nitrate levels;    Nitrification process;    Proteobacteria;    Temperature level;    Treatment performance;    Wastewater treatment plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/5/052080/pdf
DOI  :  10.1088/1755-1315/189/5/052080

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

This study evaluated the efficiency of wastewater treatment in constantly aerated CASS under different temperature levels, 4±1, 10±1, 15±1 and 20±1°C at Tibet Nyingtri. The change of microbial community structure of activated sludge reference to temperature levels was also analyzed. Results demonstrated that the treatment performance was the largest at the 20±1C by comparing the 4±1, 10±1, 15±1 and 20±1C four conditions. Bacteria belonging to the phylum proteobacteria, firmicutes, bacteroidetes, acidobacteria, nitrospira and chloroflexi have only been detected in this reactor. Ammonia and nitrate levels in all four reactors indicated efficient nitrification process. Results of this study offer new insights into understanding the performance of activated biomass vis-vis microbial community structures and degradative efficiency with reference to temperature levels on plateaus. This information would be useful in improving the efficiency of any wastewater treatment plant at high altitudes.