Synergistic phosphorus removal mechanism of Tetrasphaera enrichment in a micro-pressure swirl reactor

To investigate the effect of Tetrasphaera ’s enrichment on phosphorus removal mechanism, three micro-pressure swirl reactor (MPSR) groups were used to experiment on sewage treatment under different SRT (17.2, 50.8, and 68.2 d). Results showed that Tetrasphaera enrichment in the MPSR system was promo...

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Bibliographic Details
Published in:npj clean water 2024-09, Vol.7 (1), p.89-11
Main Authors: Yu, Ge, Kang, Hua, Dai, Chen, Zhu, Xinyu, Zhong, Shuang, Wang, Fan, Ai, Shengshu, Bian, Dejun, Zou, Donglei
Format: Article
Language:English
Subjects:
704/172/169/896
704/47
Adaptability
Anaerobic microorganisms
Anaerobic processes
Aquatic Pollution
Bacteria
Biodegradation
Carbon
Climate change
Earth and Environmental Science
Efficiency
Effluents
Energy consumption
Environment
Environmental conditions
Fermentation
Glycogen
Glycogens
Metabolism
Microorganisms
Nanotechnology
Nutrient removal
Organic matter
Organic phosphorus
Phosphorus
Phosphorus removal
Polyhydroxybutyrate
Polyhydroxybutyric acid
Pressure effects
Reactors
Relative abundance
Sewage treatment
Sludge
Tetrasphaera
Waste Water Technology
Wastewater treatment
Water Industry/Water Technologies
Water Management
Water Pollution Control
Water Quality/Water Pollution
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Summary:To investigate the effect of Tetrasphaera ’s enrichment on phosphorus removal mechanism, three micro-pressure swirl reactor (MPSR) groups were used to experiment on sewage treatment under different SRT (17.2, 50.8, and 68.2 d). Results showed that Tetrasphaera enrichment in the MPSR system was promoted by extending the SRT. After extending the SRT from 17.2 to 68.2 d, the relative abundance of Tetrasphaera increased from 3.1% to 12.1%, and the TP removal efficiency maintained above 92%. The internal circulation results indicated that after extending the SRT, glycogen and polyhydroxybutyrate were co-synthesized during the anaerobic stage, which enhanced the driving force of nutrient removal. Analysis of the microbial composition and functional gene prediction indicated that efficient phosphorus removal can be attributed to the enrichment of Tetrasphaera at long SRT. Overall, the synergistic mechanisms of Tetrasphaera in the organic matter degradation and phosphorus removal processes were integrated into the MPSR.
ISSN:2059-7037
DOI:10.1038/s41545-024-00389-4