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藻类有机物特性对消毒副产物生成的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第11期 页码: 9-15 栏目: 出版日期: 2025-06-01
Title:
Effect of Algae Organic Matter Characteristics on Formation of Disinfection By-products
作者:
朱芸1,2， 谢宇煊3， 周帆4， 陈贺超5， 王玉3， 汪隽2,3， 林朋飞2， 陈超2,3
（1.苏州科技大学 环境科学与工程学院，江苏 苏州 215009；2.清华苏州环境创新研究院，江苏 苏州 215163；3.清华大学环境学院 环境模拟与污染控制国家重点联合实验室，北京 100084；4.华侨大学 土木工程学院，福建 厦门 361021；5.江汉大学 光电材料与技术学院，湖北 武汉 430056）
Author(s):
ZHU　Yun1，2， XIE　Yu-xuan3， ZHOU　Fan4， CHEN　He-chao5， WANG　Yu3， WANG　Jun2，3， LIN　Peng-fei2， CHEN　Chao2，3
（1. School of Environmental Science and Engineering， Suzhou University of Science and Technology， Suzhou 215009， China； 2. Tsinghua Suzhou Institute of Environmental Innovation， Suzhou 215163， China； 3. State Key Joint Laboratory of Environmental Simulation and Pollution Control， School of Environment， Tsinghua University， Beijing 100084， China； 4. College of Civil Engineering， Huaqiao University， Xiamen 361021， China； 5. School of Optoelectronic Materials & Technology， Jianghan University， Wuhan 430056， China）
关键词:
藻类有机物;  消毒副产物;  亚硝胺生成潜能;  三卤甲烷生成潜能;  分子质量分级
Keywords:
algae organic matter;  disinfection by?products;  N-nitrosodimethylamine formation potential;  trihalomethanes formation potential;  molecular weight separation
摘要:
藻类有机物经氯（胺）化消毒会生成消毒副产物，但生成规律与藻类有机物特性之间的关系尚不清晰。以铜绿微囊藻为研究对象，探究了胞内和胞外有机物（IOM和EOM）的分子质量（MW）、极性和电性等特性，考察了EOM和IOM中不同分子质量组分氯化消毒的三卤甲烷生成潜能（THMFP）以及氯胺消毒的亚硝胺生成潜能（NDMAFP）。研究表明，EOM以非极性和不带正电性组分为主，而IOM以极性和带正电性组分为主；两者均是MW<1 ku和MW>10 ku的组分占比最高。小分子组分是消毒副产物的主要来源。EOM和IOM（以DOC计）的亚硝胺生成潜能分别为13.09和24.23 ng/mg，三卤甲烷生成潜能分别为23.46和41.90 μg/mg。因此，需要关注藻类暴发时水处理工艺对MW<1 ku和MW>10 ku组分的去除效果，以减少消毒副产物的生成。
Abstract:
In the process of chlorine or chloramine disinfection, algae organic matter (AOM) will generate disinfection by-products, but the relationship between the generation pattern and the characteristics of AOM is not yet clear. Using Microcystis aeruginosa as the research object, the molecular weight (MW), polarity, and electrical properties of intracellular and extracellular organic matter (IOM and EOM) were investigated, and the compositional characteristics of AOM and its contribution to trihalomethanes formation potential (THMFP) and N-nitrosodimethylamine formation potential (NDMAFP) were analyzed. The results showed that EOM was mainly composed of non-polar and non-positive components, while IOM was mainly dominated by polar and positive charged. The components with MW<1 ku and MW>10 ku accounted for the highest proportion in AOM. The organic components of EOM and IOM contributed the most to the formation of NDMA by small molecular weight species (MW<1 ku), in which NDMAFP was 13.09 ng/mg and 24.23 ng/mg, and the THMFP was 23.46 μg/mg and 41.90 μg/mg, respectively. Therefore, it is necessary to pay attention to the removal of components with a mass weight of less than 1 ku and greater than 10 ku by water treatment processes during algal bloom, in order to reduce the generation of disinfection by? products.

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