Role of soluble microbial products (SMP) in membrane fouling and flux decline

被引：311
作者：
Jarusutthirak, C [1 ]
Amy, G
机构：
[1] King Mongkuts Inst Technol, Fac Sci, Bangkok 10520, Thailand
[2] UNESCO, IHE, Inst Water Educ, Delft, Netherlands
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2006年 / 40卷 / 03期
关键词：
D O I：
10.1021/es050987a
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Soluble microbial products (SMP), a significant component of effluent organic matter (EfOM), play an important role in membrane fouling and flux decline in wastewater reclamation/reuse applications. The SMP compounds of a microbial origin are derived during biological processes of wastewater treatment. They exhibit the characteristics of hydrophilic organic colloids and macromolecules. These high molecular weight compounds play an important role in creating high resistance of the membrane, leading to a reduction of permeate flux. The SMP fouling of RO, NF, and tight UF membranes is associated with formation of a cake/gel layer due to size (steric) exclusion. FIR spectra of SMP- and EfOM-fouled membranes exhibited foulants' composition, consisting of polysaccharides, proteins, and/or aminosugar-like compounds. This finding reveals the important role of the SMP components as factors in membrane fouling and flux decline associated with EfOM source waters. Solids retention time (SRT) affects the characteristics and amounts of SMP, however, SRT did not affect flux decline trends of RO and NF membranes.
引用
收藏
页码：969 / 974
页数：6
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