Fouling control of PAC/UF process for treating algal-rich water

被引：25
|
作者：
Liu, Yongwang [1 ]
Li, Xing [1 ]
Yang, Yanling [1 ]
Liang, Shuang [2 ]
机构：
[1] Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
[2] Beijing Dong Cheng Municipal Commiss Urban Planni, Beijing 100013, Peoples R China
来源：
DESALINATION | 2015年 / 355卷
关键词：
Powdered activated carbon; Ultrafiltration; Algae; Membrane fouling; SUBMERGED MEMBRANE BIOREACTOR; ULTRAFILTRATION UF; MF MEMBRANES; REMOVAL; FLUORESCENCE; MECHANISMS; EXCITATION; FILTRATION; SURFACE; DOM;
D O I：
10.1016/j.desal.2014.10.020
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Algal blooms threaten the performance of ultrafiltration (UF) in drinking water treatment; the hybrid process of powdered activated carbon and ultrafiltration (PAC/UF) process was evaluated for treating algal-rich water. Microcystin-LR (MC-LR) removal and fouling characteristics were conducted and compared with the parallel UF. The results indicate that the PAC/UF process could achieve complete removal of algal cells, and significantly enhanced the removal of MC-LR compared with the parallel UF. Moreover, PAC/UF process could mitigate membrane fouling of algal-rich water, which was somewhat owing to the lower concentration of protein-like substances in extracellular polymer substances (EPSs) of membrane pools. The microscopic observation demonstrated that the cake layer of the PAC/UF process was much thinner and showed less polysaccharides distributed in it. In a word, PAC/UF is feasible in treating algal-rich water. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：75 / 82
页数：8
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