DOI: 10.1016/j.watres.2018.12.012
Scopus记录号: 2-s2.0-85058787497
论文题名: A novel aerobic electrochemical membrane bioreactor with CNTs hollow fiber membrane by electrochemical oxidation to improve water quality and mitigate membrane fouling
作者: Yang Y. ; Qiao S. ; Jin R. ; Zhou J. ; Quan X.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 54
结束页码: 63
语种: 英语
英文关键词: Carbon nanotubes hollow fiber membranes
; Electrochemical effect
; EMBR
; Membrane fouling
; Transmembrane pressure
Scopus关键词: Activated sludge process
; Biological water treatment
; Bioreactors
; Chemical oxygen demand
; Effluents
; Electrochemical oxidation
; Membrane fouling
; Membranes
; Water quality
; Yarn
; Activated sludge systems
; Conductive carbon nanotubes
; Electrochemical effects
; Electrochemical membranes
; EMBR
; Hollow fiber membranes
; Microbial communities
; Transmembrane pressures
; Carbon nanotubes
; carbon nanotube
; water
; activated sludge
; bioreactor
; carbon nanotube
; effluent
; electrochemical method
; fouling
; membrane
; oxic conditions
; oxidation
; pressure
; water quality
; activated sludge
; aerobic electrochemical membrane bioreactor
; Article
; cleaning
; effluent
; electric potential
; electrochemical analysis
; energy consumption
; filtration
; fouling control
; microbial community
; nonhuman
; oxidation
; priority journal
; scanning electron microscopy
; sludge digestion
; waste water management
; water quality
英文摘要: A novel electro-assisted membrane bioreactor (EMBR) was constructed by integrating conductive carbon nanotubes hollow fiber membranes (CNTs-HFMs) into an aerobic activated sludge system. Herein, the CNTs-HFMs served as anode and filtration core simultaneously. Contrasted with the other two MBRs (PVDF-HFMs and CNTs-HFMs without electro-assistance), the effluent COD and NH 4 + –N were lower than 40 mg/L and 3 mg/L at +1.0 V even HRT as short as 4 h. However, they were mostly over 50 mg/L (COD) and 5 mg/L (NH 4 + –N) under the same conditions in the other two MBRs. The hydraulic cleaning for electro-assisted CNTs-HFMs was carried out only once during 60-day operation, and the permeate flux recovered to 100% of the original status. While four and five times hydraulic cleaning were executed for other two MBRs (PVDF-HFMs and CNTs-HFMs), respectively. Furthermore, merely 50 min continuous electrochemical oxidation was enough to resume flux of the heavily fouled CNTs-HFMs, i.e. flux recovered to 2020.87 L/(bar•m 2 •h) from 394.68 L/(bar•m 2 •h) (pure water flux, ∼2200 L/(bar·m 2 ·h)). Simpson and Shannon indexes indicated enhanced microbial community stability in EMBR. Thus, electro-assisted CNTs-HFMs endow EMBR excellent anti-fouling ability and good effluent quality. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122069
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
Recommended Citation:
Yang Y.,Qiao S.,Jin R.,et al. A novel aerobic electrochemical membrane bioreactor with CNTs hollow fiber membrane by electrochemical oxidation to improve water quality and mitigate membrane fouling[J]. Water Research,2019-01-01