文献类型：期刊文献

英文题名：O3 and UV/O3 oxidation of organic constituents of biotreated municipal wastewater

作者：Gong, Jianli[1]; Liu, Yongdi[1]; Sun, Xianbo[1]

机构：[1] School of Resource and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2008

卷号：42

期号：4-5

起止页码：1238

外文期刊名：Water Research

收录：EI(收录号：20080711101143)

语种：英文

外文关键词：Biological materials - Oxidation - Ozonization - Separation - Ultraviolet radiation - Wastewater treatment

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 30 min 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. ? 2007 Elsevier Ltd. All rights reserved.