Effect of UV/ClO2 pretreatment on controlling ultrafiltration membrane fouling of different natural organic matter (NOM) fractions

被引：21

作者：

Liu, Bin ^{[1
]}

Yin, Jun ^{[1
]}

Wu, Jun ^{[1
]}

Cheng, Xiaoxiang ^{[2
]}

Yang, Kaihan ^{[1
]}

Li, Guangchao ^{[1
]}

Shi, Zhou ^{[1
]}

机构：

[1] Hunan Univ, Coll Civil Engn, Dept Water Engn & Sci, Key Lab Bldg Safety & Energy Efficiency,Minist Edu, Changsha 410082, Peoples R China

[2] Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Peoples R China

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2022年 / 49卷

基金：

中国国家自然科学基金;

关键词：

Ultrafiltration; UV; ClO2; Membrane fouling; NOM; Water purification; ALGAE-LADEN WATER; SURFACE-WATER; UF; IDENTIFICATION; UV/CHLORINE; DEGRADATION; PERFORMANCE; BINDING; UV/H2O2; MODEL;

D O I：

10.1016/j.jwpe.2022.103156

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ultrafiltration membrane fouling caused by natural organic matter (NOM) is a prevalent problem. In this research, UV/ClO2 pretreatment was employed to control ultrafiltration (UF) membrane fouling induced by various components of NOM. Three typical organic model foulants, including humic acid (HA), sodium alginate (NaAlg) and bovine serum albumin (BSA) were used as representative organic components in natural waters, and their mixture was employed as simulated NOM water. The results showed that UV/ClO2 pretreatment was effective in alleviating membrane fouling induced by HA, NaAlg, BSA, and NOM, which was demonstrated by the enhanced hydrophilicity and interfacial free energy after UV/ClO2 pretreatment. Besides, it showed remarkable removal performance of UV254 and fluorescent components, but caused a deterioration of dissolved organic carbon (DOC) in the permeate, which was attributed to the oxidation of unsaturated organic compounds and reductive organic molecular weight (MW). Moreover, the significantly degradation of disinfection byproduct precursors (DBPs) and micro-polluted organic matter of sulfamethoxazole (SMX) were confirmed. With UV/ClO2 pretreatment, the dominant fouling mechanism in the initial stage of HA and NaAlg showed a tendency that pore blocking played a dominated role, which was opposite with BSA and NOM.

引用

页数：12