Insights into the mechanism of phosphorus enrichment and stripping in side-stream enhanced biological phosphorus removal and enrichment process

Hui, Jiayao; Cheng, Wen; Zhou, Xiaoping; Ren, Jiehui; Lv, Taotao; Liu, Lan

doi:10.1016/j.jece.2024.112905

Journal of Environmental Chemical Engineering

2024

DOI: 10.1016/j.jece.2024.112905

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Insights into the mechanism of phosphorus enrichment and stripping in side-stream enhanced biological phosphorus removal and enrichment process

Jiayao Hui,

Wen Cheng,

Xiaoping Zhou

et al.

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2025

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Cited by 2 publications

References 49 publications

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Glycogen-accumulating organisms promote phosphate recovery from wastewater by pilot-scale biofilm sequencing batch reactor: Performance and mechanism

Ni,

Pan,

Gong

et al. 2025

Bioresource Technology

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Glycogen-accumulating organisms promote phosphate recovery from wastewater by pilot-scale biofilm sequencing batch reactor: Performance and mechanism

Ni,

Pan,

Gong

et al. 2025

Bioresource Technology

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A Novel AOA-SNDPRr Process for Simultaneous Wastewater Treatment, Phosphorus Recovery, and In Situ Sludge Reduction with Ultralong Sludge Retention Time

He,

Li,

Wang

et al. 2025

ACS EST Eng.

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Successive side-stream phosphorus recovery challenges the stable enhanced biological phosphorus (P) removal process due to stripping of P from sludge. In this study, a novel anaerobic/oxic/anoxic simultaneous nitrification, denitrification, and phosphorus removal integrating side-stream recovery process (AOA-SNDPRr) was proposed and operated under ultralong sludge retention time (SRT,.Results showed that effective and stable carbon, nitrogen, and P removal was obtained. High P contents within sludge (15−30 mg P/g MLSS) were kept even after an 80 day continuous extraction, thus supporting considerable anaerobic P concentrations (10−30 mg/L). Up to 81.60% of influent P was harvested, and in situ sludge reduction by 63.2% was enhanced with a low observed sludge yield (Y obs ) of 0.015 g MLSS/g chemical oxygen demand under a 50% extraction ratio. Interestingly, a long-time operation witnessed spontaneous sludge granulation. Abundant extracellular polymeric substances (EPS), particularly viscous polysaccharides (PS), were stimulated. A 16S rDNA sequence demonstrated that overwhelmingly dominated Candidatus_Competibacter soared to 20.18%−25.91% without deteriorating biological P removal. Negligible impact on functional genes for poly-P/Gly synthesis and decomposition was found. Overall, the AOA-SNDPRr process with long SRT was proved to be a sustainable approach targeting three goals of reliable wastewater treatment, efficient phosphorus recovery, and dramatic in situ sludge minimization.

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Insights into the mechanism of phosphorus enrichment and stripping in side-stream enhanced biological phosphorus removal and enrichment process

Cited by 2 publications

References 49 publications

Glycogen-accumulating organisms promote phosphate recovery from wastewater by pilot-scale biofilm sequencing batch reactor: Performance and mechanism

Glycogen-accumulating organisms promote phosphate recovery from wastewater by pilot-scale biofilm sequencing batch reactor: Performance and mechanism

A Novel AOA-SNDPRr Process for Simultaneous Wastewater Treatment, Phosphorus Recovery, and In Situ Sludge Reduction with Ultralong Sludge Retention Time

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