O3 and UV/O3 oxidation of organic constituents of biotreated municipal wastewater

被引：128
作者：
Gong, Jianli [1 ]
Liu, Yongdi [1 ]
Sun, Xianbo [1 ]
机构：
[1] E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China
来源：
WATER RESEARCH | 2008年 / 42卷 / 4-5期
基金：
高等学校博士学科点专项科研基金;
关键词：
biotreated effluent; ozonation; UV radiation; DOM fractionation;
D O I：
10.1016/j.watres.2007.09.020
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Dissolved organic matter (DOM) in the biotreated effluent of a municipal wastewater treatment plant was separated by XAD-8 and XAD-4 resins into four fractions: hydrophobic acids, non-acid hydrophobics, transphilics and hydrophilics. Ozonation with and without ultraviolet (UV) enhancement removed most UV-absorbing substances in the first 30min achieving 78% and 63% reduction in UV254, respectively; the UV enhancement resulted in a greater reduction in dissolved organic carbon (DOC) (90% vs. 36%). Ozone reacted sequentially with aromatic hydrophobics, transphilics, and then hydrophilics; however, under UV, it reacted with all four organic fractions simultaneously Low-MW hydrophilics were the most abundant fraction in the ozone-treated effluent. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1238 / 1244
页数：7
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