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]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R 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：;WOS:【SCI-EXPANDED(收录号:WOS:000254111000042)】；

语种：英文

外文关键词：biotreated effluent; ozonation; UV radiation; DOM fractionation

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.