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

被引：129

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

页码：1238 / 1244

页数：7

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