Removal of chlorine dioxide disinfection by-products by ferrous salts

被引：51

作者：

Katz, A ^{[1
]}

Narkis, N ^{[1
]}

机构：

[1] Technion Israel Inst Technol, IL-32000 Haifa, Israel

来源：

WATER RESEARCH | 2001年 / 35卷 / 01期

关键词：

chlorine dioxide; chlorite ions; chlorate ions; ferrous ions; disinfection by-products removal; drinking water; disinfection;

D O I：

10.1016/S0043-1354(00)00250-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Chlorine dioxide when used as an effective disinfectant forms undesirable disinfection byproducts, i.e. chlorite and chlorate ions. The aim of this research was to study the removal of these ions by ferrous ions in the presence or absence of oxygen. The efficiency of Fe2+ for ClO2- and ClO3- removal was followed by a determination of their initial and final concentrations, pH and Delta Fe+2 consumed/Delta ClO2- removed ratios. The optimal weight ratio of Delta Fe+2 consumed/Delta ClO2- removed for complete ClO2 removal was found to be close to the theoretical calculated value of 3.31. It was proved that ferrous salts can reduce chlorite ions to harmless Cl- ions. This method can be recommended as a part of ClO2 disinfection to ensure safe drinking water, with no harm to water consumers and to the environment. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：101 / 108

页数：8

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