Long-term effect on membrane fouling in a new membrane bioreactor as a pretreatment to seawater desalination

被引：27

作者：

Jeong, Sanghyun ^{[1
]}

Rice, Scott A. ^{[2
,3
]}

Vigneswaran, Saravanamuthu ^{[1
]}

机构：

[1] Univ Technol Sydney, Fac Engn & IT, Sydney, NSW 2007, Australia

[2] Univ New S Wales, Sch Biotechnol & Biomol Sci, Ctr Marine Bioinnovat, Sydney, NSW 2052, Australia

[3] Nanyang Technol Univ, Singapore Ctr Environm Life Sci Engn, Singapore 639798, Singapore

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 165卷

关键词：

Adsorption; Biofouling; Membrane bio-reactor; Microfiltration; Seawater; REVERSE-OSMOSIS; NANOFILTRATION; FILTRATION; FOULANT; CARBON; MBR;

D O I：

10.1016/j.biortech.2014.03.098

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Submerged membrane adsorption bio-reactors (SMABR) were investigated as a new pretreatment for seawater reverse osmosis (SWRO) desalination. They were tested with different doses of powder activated carbon (PAC) on-site for a long-term. The biofouling on the membrane was assessed in terms of DNA (cells) and polysaccharide distribution. MBR without PAC addition resulted in severe fouling on membrane. When PAC is added in the MBR, PAC could reduce the organic fouling. Hence the biofilm formation on membrane was reduced without any membrane damage. PAC also helped to remove low molecular weight (LMW) organics responsible for biofouling of RO membrane. A linear correlation between assimilable organic carbon (AOC) and LMW organics was observed. A small amount of PAC (2.4-8.0 g of PAC/m(3) of seawater) was sufficient to reduce biofouling. It indicated that SMABR is an environmentally-friendly biological pretreatment to reduce biofouling for SWRO. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：60 / 68

页数：9

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