Medium pressure UV combined with chlorine advanced oxidation for trichloroethylene destruction in a model water

被引：169

作者：

Wang, Ding ^{[1
]}

Bolton, James R. ^{[2
]}

Hofmann, Ron ^{[1
]}

机构：

[1] Univ Toronto, Dept Civil Engn, Toronto, ON M5S 1A4, Canada

[2] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2, Canada

来源：

WATER RESEARCH | 2012年 / 46卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Ultraviolet; UV; Medium pressure; Chlorine; Advanced oxidation; Trichloroethylene; ELECTRICAL ENERGY EFFICIENCY; AQUEOUS-SOLUTIONS; RADIATION-CHEMISTRY; HYDROGEN-PEROXIDE; OXYCHLORINE IONS; ULTRAVIOLET WAVELENGTHS; ORGANIC-COMPOUNDS; PHOTOLYSIS; DEGRADATION; PHOTOCHEMISTRY;

D O I：

10.1016/j.watres.2012.06.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effectiveness of ultraviolet (UV) combined with chlorine as a novel advanced oxidation process (AOP) for drinking water treatment was evaluated in a bench scale study by comparing the rate of trichloroethylene (TCE) decay when using UV/chlorine to the rates of decay by UV alone and UV/hydrogen peroxide (H2O2) at various pH values. A medium pressure mercury UV lamp was used. The UV/chlorine process was more efficient than the UV/H2O2 process at pH 5, but in the neutral and alkaline pH range, the UV/H2O2 process became more efficient. The pH effect was probably controlled by the increasing concentration of OCl- at higher pH values. A mechanistic kinetic model of the UV/chlorine treatment of TCE showed good agreement with the experimental data. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：4677 / 4686

页数：10

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