DOI: 10.1016/j.watres.2018.11.054
Scopus记录号: 2-s2.0-85057458698
论文题名: Role of feed water biodegradable substrate concentration on biofouling: Biofilm characteristics, membrane performance and cleanability
作者: Farhat N.M. ; Javier L. ; Van Loosdrecht M.C.M. ; Kruithof J.C. ; Vrouwenvelder J.S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Biofilm structure
; Chemical cleaning
; Extracellular polymeric substances (EPS)
; Reverse osmosis performance
; Slowly growing biofilms
Scopus关键词: Biofouling
; Boilers
; Chemical cleaning
; Drops
; Membrane fouling
; Planning
; Pressure drop
; Reverse osmosis
; Sodium hydroxide
; Water
; Biofilm structure
; Extracellular polymeric substances
; Membrane fouling simulator
; Membrane performance
; Operational performance
; Physical characteristics
; Removal efficiencies
; Substrate concentrations
; Biofilms
; acetic acid
; adenosine triphosphate
; brackish water
; carbohydrate
; carbon
; protein
; sodium hydroxide
; tap water
; tyrosine
; biodegradation
; biofilm
; biofouling
; biomass
; chemical analysis
; concentration (composition)
; exopolymer
; membrane
; performance assessment
; pollutant removal
; pressure drop
; regrowth
; reverse osmosis
; Article
; bacterial cell
; benchmarking
; biofilm
; biofouling
; biomass
; chemical cleaning
; cleaning
; controlled study
; feed channel pressure drop
; fluorescence excitation emission matrix
; membrane
; nutrient concentration
; optical coherence tomography
; pressure
; priority journal
; substrate concentration
; total organic carbon
; two-dimensional imaging
英文摘要: Biofouling severely impacts operational performance of membrane systems increasing the cost of water production. Understanding the effect of critical parameters of feed water such as biodegradable substrate concentration on the developed biofilm characteristics enables development of more effective biofouling control strategies. In this study, the effect of substrate concentration on the biofilm characteristics was examined using membrane fouling simulators (MFSs). A feed channel pressure drop (PD) increase of 200 mbar was used as a benchmark to study the developed biofilm. The amount and characteristics of the formed biofilm were analysed in relation to membrane performance indicators: feed channel pressure drop and permeate flux. The effect of the characteristics of the biofilm developed at three substrate concentrations on the removal efficiency of the different biofilms was evaluated applying acid/base cleaning. Results showed that a higher feed water substrate concentration caused a higher biomass amount, a faster PD increase, but a lower permeate flux decline. The permeate flux decline was affected by the spatial location and the physical characteristics of the biofilm rather than the total amount of biofilm. The slower growing biofilm developed at the lowest substrate concentration was harder to remove by NaOH/HCl cleanings than the biofilm developed at the higher substrate concentrations. Effective biofilm removal is essential to prevent a fast biofilm regrowth after cleaning. While substrate limitation is a generally accepted biofouling control strategy delaying biofouling, development of advanced cleaning methods to remove biofilms formed under substrate limited conditions is of paramount importance. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122105
Appears in Collections: 气候变化事实与影响
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作者单位: 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; Delft University of Technology, Faculty of Applied Sciences, Department of Biotechnology, Van der Maasweg 9, Delft, HZ 2629, Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, MA 8911, Netherlands
Recommended Citation:
Farhat N.M.,Javier L.,Van Loosdrecht M.C.M.,et al. Role of feed water biodegradable substrate concentration on biofouling: Biofilm characteristics, membrane performance and cleanability[J]. Water Research,2019-01-01