DOI: 10.1016/j.watres.2019.01.044
Scopus记录号: 2-s2.0-85061368150
论文题名: A comparison of gravity-driven membrane (GDM) reactor and biofiltration + GDM reactor for seawater reverse osmosis desalination pretreatment
作者: Lee S. ; Suwarno S.R. ; Quek B.W.H. ; Kim L. ; Wu B. ; Chong T.H.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 72
结束页码: 83
语种: 英语
英文关键词: Biofiltration
; Energy consumption
; Gravity-driven microfiltration
; Microbial community
; Seawater pretreatment
Scopus关键词: Activated carbon
; Biofilms
; Biofilters
; Biofiltration
; Desalination
; Energy utilization
; Membranes
; Microfiltration
; Microorganisms
; Reverse osmosis
; Seawater
; Granular activated carbons
; Membrane performance
; Microbial communities
; Organic substances
; Permeate quality
; Seawater pretreatment
; Seawater reverse osmosis
; Water production cost
; Cost benefit analysis
; sea water
; activated carbon
; anthracite
; biofilm
; biofiltration
; bioreactor
; comparative study
; desalination
; eukaryote
; membrane
; microbial community
; pollutant removal
; reverse osmosis
; seawater
; water treatment
; Article
; autopsy
; biodegradation
; biofiltration
; biosorption
; cell count
; cell density
; comparative study
; cost benefit analysis
; desalination
; energy consumption
; gravity
; gravity driven membrane
; hydrostatic pressure
; microbial community
; microfiltration
; polymerization
; predation
; priority journal
; reverse osmosis
; turbidity
; waste water management
; water quality
; Eukaryota
; Prokaryota
英文摘要: In this study, permeate quality, membrane performance, and microbial community in a gravity-driven microfiltration (GDM) reactor and a biofiltration (BF) + GDM reactor for seawater reverse osmosis (RO) desalination pretreatment were compared at both lab-scale and pilot-scale. The presence of BF column was more efficient in removing soluble organic substances by biosorption/biodegradation, leading to superior permeate quality from BF + GDM and subsequently lower RO fouling than GDM. Compared to the biofilm-saturated anthracite media, the granular activated carbon media in BF improved the assimilable organic substances removal in BF + GDM. Although less organic substances and microbial cells were accumulated on the membrane in BF + GDM, its permeate flux was 10–20% lower than GDM. Furthermore, BF lowered the amounts and diversity of prokaryotes (due to less organic substances) and eukaryotes (due to BF media rejection and lacking of prokaryotic preys) in the membrane biofilm of BF + GDM, but did not cause significant shifts of predominant species. Thus, the lower flux in BF + GDM was attributed to the limited predation and movement of eukaryotes in membrane biofilm, which may result in the formation of less porous and compact biofilm layer. The cost analysis indicated that BF + GDM-RO requires 5.2% less operating cost and 1.5% less water production cost than GDM-RO. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121961
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore; King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal, 23955-6900, Saudi Arabia; Faculty of Civil and Environmental Engineering, University of Iceland, Hjardarhagi 2-6, Reykjavik, IS-107, Iceland
Recommended Citation:
Lee S.,Suwarno S.R.,Quek B.W.H.,et al. A comparison of gravity-driven membrane (GDM) reactor and biofiltration + GDM reactor for seawater reverse osmosis desalination pretreatment[J]. Water Research,2019-01-01