DOI: 10.1016/j.watres.2018.11.011
Scopus记录号: 2-s2.0-85056827612
论文题名: Polyphosphate-accumulating organisms in full-scale tropical wastewater treatment plants use diverse carbon sources
作者: Qiu G. ; Zuniga-Montanez R. ; Law Y. ; Thi S.S. ; Nguyen T.Q.N. ; Eganathan K. ; Liu X. ; Nielsen P.H. ; Williams R.B.H. ; Wuertz S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 496
结束页码: 510
语种: 英语
英文关键词: Alcohols
; Amino acids
; Candidatus Accumulibacter
; Carbon source
; Enhanced biological phosphorus removal (EBPR)
; High temperature
; Polyphosphate-accumulating organisms (PAO)
; Sugars
; Tetrasphaera
; Volatile fatty acids (VFAs)
Scopus关键词: Alcohols
; Amino acids
; Bacteria
; Biological water treatment
; Carbon
; Forestry
; Sewage pumping plants
; Sugars
; Tropics
; Wastewater treatment
; Water treatment plants
; Accumulibacter
; Carbon source
; Enhanced biological phosphorus removal
; High temperature
; Polyphosphate-accumulating organisms
; Tetrasphaera
; Volatile fatty acids (VFAs)
; Volatile fatty acids
; acetic acid
; alcohol derivative
; amino acid
; carbon
; glycogen
; lactic acid
; phosphorus
; polyphosphate
; pyruvic acid
; volatile fatty acid
; activated carbon
; alcohol
; amino acid
; bacterium
; bioaccumulation
; fatty acid
; high temperature
; microbial community
; operations technology
; phosphate
; pollutant removal
; polymer
; relative abundance
; tropical environment
; wastewater treatment plant
; Accumulibacter
; Article
; carbon source
; controlled study
; Dechloromonas
; nonhuman
; Obscuribacter
; priority journal
; Singapore
; Tetrasphaera
; waste component removal
; waste water treatment plant
; Singapore [Southeast Asia]
; Dechloromonas
; Otus
; Tetrasphaera
英文摘要: Enhanced biological phosphorus removal (EBPR) is considered challenging in the tropics, based on a great number of laboratory-based studies showing that the polyphosphate-accumulating organism (PAO) Candidatus Accumulibacter does not compete well with glycogen accumulating organisms (GAOs) at temperatures above 25 °C. Yet limited information is available on the PAO community and the metabolic capabilities in full-scale EBPR systems operating at high temperature. We studied the composition of the key functional PAO communities in three full-scale wastewater treatment plants (WWTPs) with high in-situ EBPR activity in Singapore, their EBPR-associated carbon usage characteristics, and the relationship between carbon usage and community composition. Each plant had a signature community composed of diverse putative PAOs with multiple operational taxonomic units (OTUs) affiliated to Ca. Accumulibacter, Tetrasphaera spp., Dechloromonas and Ca. Obscuribacter. Despite the differences in community composition, ex-situ anaerobic phosphorus (P)-release tests with 24 organic compounds from five categories (including four sugars, three alcohols, three volatile fatty acids (VFAs), eight amino acids and six other carboxylic acids) showed that a wide range of organic compounds could potentially contribute to EBPR. VFAs induced the highest P release (12.0–18.2 mg P/g MLSS for acetate with a P release-to-carbon uptake (P:C) ratio of 0.35–0.66 mol P/mol C, 9.4–18.5 mg P/g MLSS for propionate with a P:C ratio of 0.38–0.60, and 9.5–17.3 mg P/g MLSS for n-butyrate), followed by some carboxylic acids (10.1–18.1 mg P/g MLSS for pyruvate, 4.5–11.7 mg P/g MLSS for lactate and 3.7–12.4 mg P/g MLSS for fumarate) and amino acids (3.66–7.33 mg P/g MLSS for glutamate with a P:C ratio of 0.16–0.43 mol P/mol C, and 4.01–7.37 mg P/g MLSS for aspartate with a P:C ratio of 0.17–0.48 mol P/mol C). P-release profiles (induced by different carbon sources) correlated closely with PAO community composition. High micro-diversity was observed within the Ca. Accumulibacter lineage, which represented the most abundant PAOs. The total population of Ca. Accumulibacter taxa was highly correlated with P-release induced by VFAs, highlighting the latter's importance in tropical EBPR systems. There was a strong link between the relative abundance of individual Ca. Accumulibacter OTUs and the extent of P release induced by distinct carbon sources (e.g., OTU 81 and amino acids, and OTU 246 and ethanol), suggesting niche differentiation among Ca. Accumulibacter taxa. A diverse PAO community and the ability to use numerous organic compounds are considered key factors for stable EBPR in full-scale plants at elevated temperatures. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122141
Appears in Collections: 气候变化事实与影响
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作者单位: Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore637551, Singapore; Department of Civil and Environmental Engineering, University of California, One Shields Avenue, Davis, CA 95616, United States; Singapore Centre for Environmental Life Sciences Engineering, National University of Singapore, Singapore119077, Singapore; Centre for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Aalborg, DK-9220, Denmark; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore639798, Singapore
Recommended Citation:
Qiu G.,Zuniga-Montanez R.,Law Y.,et al. Polyphosphate-accumulating organisms in full-scale tropical wastewater treatment plants use diverse carbon sources[J]. Water Research,2019-01-01