Industrial wastewater advanced oxidation .1. UV radiation in the presence and absence of hydrogen peroxide

被引：79
|
作者：
Beltran, FJ
Gonzalez, M
Gonzalez, JF
机构：
[1] Depto. de Ing. Quim. y Energetica, Universidad de Extremadura
来源：
WATER RESEARCH | 1997年 / 31卷 / 10期
关键词：
distillery wastewaters; tomato wastewaters; advanced oxidation technologies; wastewater treatment; UV radiation;
D O I：
10.1016/S0043-1354(97)00077-8
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The oxidation of two wastewaters collected from distillery and tomato processing plants with UV radiation (254 nm) alone and combined with hydrogen peroxide has been investigated. Distillery wastewaters are refractory to UV radiation but the presence of hydrogen peroxide leads to different COD reductions which indicates that the process is mainly due to the action of radicals. Tomato wastewaters, on the other hand, show a higher reactivity even with UV radiation alone. The quantum yield for tomato wastewaters with an initial COD of 930 mg O-2 l(-1) was found to be 0.7 mol O-2 photon(-1) and decreased with reaction time. The combined effect of UV radiation and hydrogen peroxide at a 0.01 M concentration on tomato wastewaters leads to about 25% COD reduction while TOC was unchanged. The contribution of radical reactions in this process was higher than 60%. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：2405 / 2414
页数：10
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