Abstract:Dissolved organic matter (DOM) in raw water from upper Yangtze River in Chongqing, middle Yangtze River in Wuhan, lower Yangtze River in Shanghai was isolated into fractions with different hydrophobicity and molecular weight (MW) by resin adsorption and ultra-filtration, respectively, to investigate and regulate emerging disinfection byproducts formation potential during chlorination and chloramination for each fraction. Research showted that DOM from Chongqing, Wuhan and Shanghai was mainly constituted of MW<1kDa organic compounds, hydrophilic and hydrophobic fractions. Trihalometheanes, haloketones, haloacetic acids, haloacetonitriles and chloropicrin were formed after chlorination and chloramination. Among three cities, MW<1kDa fractions gave the highest yield of carbonaceous disinfection byproducts (C-DBPs) and nitrogenous disinfection byproducts (N-DBPs), and the proportion of MW<1kDa formation potential tended to ascend from the upper Yangtze River to lower Yangtze River; Among all three megalopolis, hydrophobic fraction and hydrophilic fraction produced more C-DBPs and N-DBPs, the proportion of hydrophilic fraction C-DBPs and N-DBPs formation potential tended to ascend during chloramination.
黄河, 徐斌, 朱文倩, 秦朗, 马玉英. 长江沿线城市水源氯(胺)化消毒副产物生成潜能研究[J]. 中国环境科学, 2014, 34(10): 2497-2504.
HUANG He, XU Bin, ZHU Wen-Qian, QIN Lang, MA Yu-Ying. Distribution of disinfection by-product formation potential by chlor(am)ination in three megalopolis along Yangtze river. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(10): 2497-2504.