DOI: 10.1016/j.watres.2018.01.024
Scopus记录号: 2-s2.0-85041696740
论文题名: Effects of COD/N ratio on soluble microbial products in effluent from sequencing batch reactors and subsequent membrane fouling
作者: Ly Q.V. ; Nghiem L.D. ; Sibag M. ; Maqbool T. ; Hur J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 134 起始页码: 13
结束页码: 21
语种: 英语
英文关键词: COD/N ratio
; EEM-PARAFAC
; Membrane fouling
; Size exclusion chromatography (SEC)
; Soluble microbial products (SMP)
; Ultrafiltration (UF)
Scopus关键词: Activated sludge process
; Amino acids
; Batch reactors
; Chemical oxygen demand
; Effluents
; Membrane fouling
; Membranes
; Shape memory effect
; Ultrafiltration
; COD/N ratios
; Excitation emission matrices
; PARAFAC
; Parallel factor analysis
; Relative contribution
; Sequencing batch reactors
; Soluble microbial products
; Ultrafiltration membranes
; Size exclusion chromatography
; biopolymer
; fulvic acid
; nitrogen
; oxygen
; tryptophan
; benzopyran derivative
; nitrogen
; bioreactor
; chemical oxygen demand
; chromatography
; effluent
; fouling
; membrane
; microbial activity
; ultrafiltration
; wastewater treatment
; Article
; biofouling
; chemical composition
; chemical oxygen demand
; controlled study
; effluent
; environmental reclamation
; excitation emission matrix parallel factor analysis
; factor analysis
; fluorescence analysis
; humic substance
; microbial activity
; microorganism
; molecular weight
; particle size
; priority journal
; size exclusion chromatography
; subsequent membrane fouling
; trend study
; ultrafiltration
; waste water
; waste water management
; artificial membrane
; biochemical oxygen demand
; bioreactor
; chemistry
; devices
; sewage
; waste water
; Benzopyrans
; Biological Oxygen Demand Analysis
; Bioreactors
; Chromatography, Gel
; Humic Substances
; Membranes, Artificial
; Nitrogen
; Sewage
; Tryptophan
; Ultrafiltration
; Waste Water
英文摘要: The relative ratios of chemical oxygen demand (COD) to nitrogen (N) in wastewater are known to have profound effects on the characteristics of soluble microbial products (SMP) from activated sludge. In this study, the changes in the SMP characteristics upon different COD/N ratios and the subsequent effects on ultrafiltration (UF) membrane fouling potentials were examined in sequencing batch reactors (SBR) using excitation emission matrix-parallel factor analysis (EEM-PARAFAC) and size exclusion chromatography (SEC). Three unique fluorescent components were identified from the SMP samples in the bioreactors operated at the COD/N ratios of 100/10 (N rich), 100/5 (N medium), and 100/2 (N deficient). The tryptophan-like component (C1) was the most depleted at the N medium condition. Fulvic-like (C2) and humic-like (C3) components were more abundant with N rich wastewater. Greater abundances of large size biopolymer (BP) and low molecular weight neutrals (LMWN) were found under the N deficient and N rich conditions, respectively. SMPs from various COD/N exhibited a greater degree on membrane fouling following the order of 100/2 > 100/10 > 100/5. C1 and C2 had close associations with reversible and irreversible fouling, respectively, while the reversible fouling potential of C3 depended on the COD/N ratios. No significant impact of COD/N ratio was observed on the relative contributions of SMP size fractions to either reversible or irreversible fouling potential. However, the COD/N ratios likely altered the BP foulants' composition with greater contribution of proteinaceous substances to reversible fouling under the N deficient condition than at other N richer conditions. The opposite trend was observed for irreversible fouling. Our results provided further insight into changes in different SMP constitutes and their membrane fouling in response to microbial activities under different COD/N ratios. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112923
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environment & Energy, Sejong University, Seoul, 05006, South Korea; Centre for Technology in Water and Wastewater, University of Technology SydneyNSW 2007, Australia
Recommended Citation:
Ly Q.V.,Nghiem L.D.,Sibag M.,et al. Effects of COD/N ratio on soluble microbial products in effluent from sequencing batch reactors and subsequent membrane fouling[J]. Water Research,2018-01-01,134