地下水有机质性质与ClO_2消毒生成ClO_2^-的相关性

Analysis of Correlation between Groundwater Organic Matter Characteristics and Chlorite Production

深入研究了18个地下水样本的水质特征,并将其进行二氧化氯氧化,分析有机物特性与消毒副产物亚氯酸盐生成量的关系。结果表明,地下水样本大部分处于中等污染或严重污染的程度,溶解性有机物(NOM)以富里酸类与腐殖酸类为主,可溶性微生物代谢物质很少;二氧化氯氧化可以有效降解富里酸和腐殖酸类物质,通过氧化NOM分子中的芳香结构和共轭双键结构,使大分子芳香性物质和长脂肪链有机物转化为小分子质量和亲水性的有机物。但是,由于地下水无机污染物的干扰,亚氯酸盐生成量与有机质吸光度的相关性较低。

This paper investigated NOM characteristics of 18 groundwater samples, and analyzed the relationship between NOM characteristics and the chlorite produced in the CIO2 oxidation. The major conclusions were as follows： （1） most of the groundwater samples were either moderately or seriously pol- luted. Dissolved mount of soluble Through organic matter （NOM） was mainly composed of fulvic and humic acids, with a small a- metabolites. @） C102 oxidation could effectively degrade fulvic acid and humic acid. the oxidation of aromatic structure and the conjugated double bond structure in the NOM mole- cule, the aromatic compounds and the long aliphatic chain organic compounds were transformed into hy- drophilic organic compounds with small molecular weight. However, due to the interference of inorganic pollutants in groundwater, there was a limited correlation between the amount of chlorite production and the absorbance of the organic matter.