DOI: 10.1016/j.watres.2018.08.018
Scopus记录号: 2-s2.0-85053068593
论文题名: Effect of sulfate radical-based oxidation pretreatments for mitigating ceramic UF membrane fouling caused by algal extracellular organic matter
作者: Cheng X. ; Wu D. ; Liang H. ; Zhu X. ; Tang X. ; Gan Z. ; Xing J. ; Luo X. ; Li G.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 39
结束页码: 49
语种: 英语
英文关键词: Ceramic UF membrane
; Extracellular organic matter (EOM)
; Membrane fouling
; Micropollutants
; Sulfate radical-based advanced oxidation processes (SR-AOPs)
Scopus关键词: Algae
; Biogeochemistry
; Biomolecules
; Biopolymers
; Ceramic materials
; Chemicals removal (water treatment)
; Membrane fouling
; Membranes
; Organic compounds
; Oxidation
; Sulfur compounds
; Surface mount technology
; Advanced Oxidation Processes
; Extracellular organic matters
; Irreversible fouling
; Microcystis aeruginosa
; Micropollutants
; Removal performance
; Reversible fouling
; UF membranes
; Iron compounds
; biofiltration
; fouling
; membrane
; organic compound
; organic matter
; oxidation
; pollutant
; pollutant removal
; polymer
; radical
; reduction
; sulfate
; ultrafiltration
; water treatment
; algae
; Microcystis aeruginosa
英文摘要: Algal extracellular organic matter (EOM) released from Microcystis aeruginosa can cause severe membrane fouling during algae-laden water treatment. To solve this problem, three typical sulfate radical-based advanced oxidation processes (SR-AOPs), i.e., ferrous iron/peroxymonosulfate (Fe(II)/PMS), UV/PMS and UV/Fe(II)/PMS, were employed as membrane pretreatment strategies. Their performance on mitigating EOM fouling of a ceramic UF membrane was systematically investigated and compared in the present study. The results indicated that SR-AOPs pretreatments could promote the reduction of DOC and UV254, and the removal performance showed an apparent regularity of UV/Fe(II)/PMS > Fe(II)/PMS > UV/PMS. The pretreatments were very effective for decomposing high-MW biopolymers (>20,000 Da) into low-MW humic substances (1000–20,000 Da), thus reducing the accumulation of high-MW biopolymers on membrane surface. With respect to membrane fouling control, Fe(II)/PMS significantly mitigated both reversible and irreversible membrane fouling, whereas UV/PMS only reduced reversible fouling, and exhibited little effect on irreversible fouling. By contrast, UV/Fe(II)/PMS showed the best performance for fouling reduction due to the synergistic effect of UV and Fe(II) for PMS activation. The dominating fouling mechanism was governed by both pore blockage and cake filtration, likely due to the bimodal MW distribution of EOM, and SR-AOPs pretreatments delayed the transition from pore blockage to cake filtration. In addition, SR-AOPs prior to UF membrane were also very effective to improve the removal of micropollutants (i.e., ATZ, SMT and p-CNB). These results demonstrate the potential application of SR-AOPs as pretreatment for membrane fouling control during algae-laden water treatment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112411
Appears in Collections: 气候减缓与适应
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作者单位: School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
Recommended Citation:
Cheng X.,Wu D.,Liang H.,et al. Effect of sulfate radical-based oxidation pretreatments for mitigating ceramic UF membrane fouling caused by algal extracellular organic matter[J]. Water Research,2018-01-01,145