CHARACTERIZING THE REMOVAL OF DISINFECTION BY-PRODUCT PRECURSORS BY ARTIFICIAL MEDIA BASED ON MOLECULAR SIZE

被引：0

作者：

Yang, Xiao-Li ^{[1
]}

Lu, Ji-Lai ^{[2
]}

Mo, Yun ^{[1
]}

Song, Hai-Liang ^{[3
]}

机构：

[1] Southeast Univ, Sch Civil Engn, Nanjing 210096, Jiangsu, Peoples R China

[2] Jiangsu Acad Environm Sci, Jiangsu Key Lab Environm Engn, Nanjing 210036, Jiangsu, Peoples R China

[3] Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2013年 / 22卷 / 11A期

基金：

美国国家科学基金会;

关键词：

Artificial medium; micro-polluted source water; dissolved organic matter (DOM); molecular weight (Mw); disinfection by-product formation potential (DBPFP); NATURAL ORGANIC-MATTER; DRINKING-WATER; CHLORINATION; COAGULATION; REACTIVITY; ABSORBENCY; FRACTIONS; RIVER;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this study is to apply a new bio-pre-treatment process to reduce the formation of disinfection by-products (DBPs). The characteristics of dissolved organic matter (DOM) in raw water from the Yangtze River, and the removal of DBP precursors at different molecular weight (M-w) fractions by two artificial media (assembled medium and elastic medium) were investigated. The low Mw fraction was found to be the most abundant one in the raw water, and the lower SUVA fraction was found to be the most reactive precursor to DBPs formation. Two artificial media achieved the DOC removal of 6.9% and 6.7%, respectively, and both exhibited a much better reduction of DBP formation potential (24.0% and 21.6% for THMs formation, 37.9% and 35.5% for HAAs formation). No significant trend was observed with respect to the removal of DOC, UV254 and the reduction of DBP formation potential from individual Mw fractions. The distribution of DOC concentration, UV254 absorbance and DBP formation potential changed little after the pretreatment with both artificial media.

引用

页码：3383 / 3389

页数：7

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