DOI: 10.1016/j.watres.2018.05.031
Scopus记录号: 2-s2.0-85049327577
论文题名: Moderate KMnO4-Fe(II) pre-oxidation for alleviating ultrafiltration membrane fouling by algae during drinking water treatment
作者: Ma B. ; Qi J. ; Wang X. ; Ma M. ; Miao S. ; Li W. ; Liu R. ; Liu H. ; Qu J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 142 起始页码: 96
结束页码: 104
语种: 英语
英文关键词: Algae-laden reservoir water
; Fouling alleviation
; Moderate KMnO4-Fe(II) pre-oxidation
; Ultrafiltration membrane
Scopus关键词: Algae
; Chemical water treatment
; Coagulation
; Effluents
; Enzyme activity
; Membrane fouling
; Membranes
; Microorganisms
; Oxidation
; Potable water
; Potash
; Reservoirs (water)
; Ultrafiltration
; Water quality
; Effluent quality
; Extra-cellular polymeric substances
; Intracellular organic matters
; Pre-oxidation
; Reservoir water
; Surface activities
; Transmembrane pressures
; Ultra-filtration membranes
; Iron compounds
; drinking water
; ferric ion
; ferrous ion
; iron
; manganese
; manganese oxide
; oxidizing agent
; polymer
; potassium
; alga
; coagulation
; concentration (composition)
; drinking water
; effluent
; fouling
; membrane
; organic matter
; oxidation
; performance assessment
; pollutant removal
; polymer
; reservoir
; ultrafiltration
; water treatment
; alga
; Article
; biofouling
; colorimetry
; concentration (parameters)
; controlled study
; effluent
; membrane
; microbial diversity
; nonhuman
; oxidation
; polymerization
; pressure
; priority journal
; process optimization
; surface property
; transmembrane pressure
; turbidity
; ultrafiltration
; waste component removal
; water quality
; water treatment
; algae
英文摘要: Although ultrafiltration (UF) membranes are highly beneficial for removing algae, the removal process causes serious UF membrane fouling. To avoid the unfavorable effects of algal cells that have been damaged by oxidants, our previous study reported a novel, moderate pre-oxidation method (KMnO4-Fe(II) process) that aimed to achieve a balance between the release of intracellular organic matter and enhanced algae removal. This study further investigated the performance of a UF membrane with KMnO4-Fe(II) pretreatment in the presence of algae-laden reservoir water after a long running time. We found that algae could be completely removed, membrane fouling was significantly alleviated, and the overall performance was much better than that of Fe(III) coagulation alone. The transmembrane pressure (TMP) during Fe(III) coagulation increased to 42.8 kPa, however, that of the KMnO4-Fe(II) process only increased to 25.1 kPa for after running for 90 d. The slower transmembrane pressure was attributed to the larger floc size, higher surface activity, and inactivation of algae. Although there was little effect on microorganism development, lower microorganism abundance (20.7%) was observed during the KMnO4-Fe(II) process than during coagulation alone (44.9%) due to the release of extracellular polymeric substances. We also found that the floc cake layer was easily removed by washing, and many of the original membrane pores were clearly observed. Further analysis demonstrated that the effluent quality was excellent, especially its turbidity, chromaticity, and Mn and Fe concentrations. Based on the outstanding UF membrane performance, it may be concluded that the KMnO4-Fe(II) process exhibits considerable potential for application in the treatment of algae-laden water. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112641
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Technology Institute of Beijing Waterworks Group Co., Ltd., Beijing, 100012, China; Beijing Engineering Research Center for Drinking Water Quality, Beijing, 100012, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
Recommended Citation:
Ma B.,Qi J.,Wang X.,et al. Moderate KMnO4-Fe(II) pre-oxidation for alleviating ultrafiltration membrane fouling by algae during drinking water treatment[J]. Water Research,2018-01-01,142