Enhancement of boron removal in treatment of spent rinse from a plating operation using RO

被引：12
|
作者：
Qin, JJ
Oo, MH
Wai, MN
Cao, YM
机构：
[1] Singapore Util Int Pte Ltd, Ctr Adv Water Technol, Innovat Ctr, Nanyang Technol Univ, Singapore 637723, Singapore
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
来源：
DESALINATION | 2005年 / 172卷 / 02期
关键词：
boron removal; reverse osmosis; membrane separation; iron oxide; complexation effect; water treatment;
D O I：
10.1016/j.desal.2004.07.034
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Boron removal is a critical issue in the production of drinking water and of ultra-pure water in the electronics industry. Boron rejection in a RO process is typically in the range of 40-60%. The objective of this study was to distinguish the factor contributing to enhanced boron rejection in reclamation of a spent rinse stream from a plating operation. The effects of different known components used in the feed on boron removal were investigated in the laboratory. The results indicated that glycolic acid and antifoulants could not individually enhance boron rejection in a RO process. A high boron rejection of 95% was achieved as the concentration of iron in the feed was 10 times higher than that of boron, which might be due to formation of a complex between iron oxide and boron. The finding was confirmed in a pilot study.
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页码：151 / 156
页数：6
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