Analysis on microbiological characteristics of low temperature wastewater treated by segmented inlet AO process

Weiqing Jiang; Wenai Liu; Fan Wang; Hua Kang; Yiming Yan; Dejun Bian

doi:10.1117/12.2619860

9 December 2021 Analysis on microbiological characteristics of low temperature wastewater treated by segmented inlet AO process

Weiqing Jiang, Wenai Liu, Fan Wang, Hua Kang, Yiming Yan, Dejun Bian

Author Affiliations +

Proceedings Volume 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021); 120301S (2021) https://doi.org/10.1117/12.2619860
Event: Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 2021, Hefei, China

Abstract

Biological treatment is the most economical method of urban sewage treatment, but the growth and metabolism of microorganisms depend on the appropriate temperature. At low temperature, the nitrification and phosphorus removal performance of microorganisms is significantly reduced. In-depth analysis of the characteristics of the microbial community in activated sludge at low temperatures is the key to understanding the nature of low-temperature wastewater biological treatment. In this study, we selected activated sludge samples from segmented inlet AO reactors that can operate stably under low temperature (15 °C) conditions and have good denitrification and phosphorus removal effects, and analyzed the abundance and structural characteristics of microorganisms by high-throughput sequencing technology. The results show that there were more types of microorganisms in aerobic tank than in anaerobic tank, and both areas are dominated by microorganisms that degrade organic matter. The results also show that a variety of high-abundance denitrifying phosphorus removal bacteria were accumulated in the reactor, such as denitrifying bacteria Dokdonella, Flavobacterium, Runellar, phosphorus accumulating bacteria Tetrasphaera, Candidatus_Accumulibacter, Candidatus_Competibacter and other phosphorus removal bacteria.

Citation Download Citation

Weiqing Jiang, Wenai Liu, Fan Wang, Hua Kang, Yiming Yan, and Dejun Bian "Analysis on microbiological characteristics of low temperature wastewater treated by segmented inlet AO process", Proc. SPIE 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 120301S (9 December 2021); https://doi.org/10.1117/12.2619860

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