CAJ | 학술논문

以长江上游重庆、中游武汉、下游上海等大城市的长江饮用水源为研究对象，在对溶解性有机物分子量和亲疏水性分离的基础上，分别采用氯和氯胺两种方式消毒，对比分析了相同时期沿江这些城市原水中氯(胺)化常规和新兴含氮消毒副产物生成潜能的分子组成规律。研究表明，重庆、武汉、上海三地的溶解性有机物均以小分子前体物为主，主要分布在<1kDa 的区间内，且以强疏水性成分和亲水性成分为主，原水经氯(胺)化可产生三卤甲烷、卤乙酸、卤乙腈、三氯硝基甲烷等类型的消毒副产物；三地的氯(胺)化主要的含碳消毒副产物(C-DBPs)和含氮消毒副产物(N-DBPs)生成潜能均在<1kDa的区间内最大，从上游到下游，在<1kDa的区间内的生成潜能占各自总潜能比例逐渐增加。三地的氯(胺)化的C-DBPs和N-DBPs生成潜能均以强疏水性组分或亲水性组分为主，且氯胺化可导致亲水性组分C-DBPs和N-DBPs生成潜能所占总量比例增加。
이장강상유중경、중유무한、하유상해등대성시적장강음용수원위연구대상，재대용해성유궤물분자량화친소수성분리적기출상，분별채용록화록알량충방식소독，대비분석료상동시기연강저사성시원수중록(알)화상규화신흥함담소독부산물생성잠능적분자조성규률。연구표명，중경、무한、상해삼지적용해성유궤물균이소분자전체물위주，주요분포재<1kDa 적구간내，차이강소수성성분화친수성성분위주，원수경록(알)화가산생삼서갑완、서을산、서을정、삼록초기갑완등류형적소독부산물；삼지적록(알)화주요적함탄소독부산물(C-DBPs)화함담소독부산물(N-DBPs)생성잠능균재<1kDa적구간내최대，종상유도하유，재<1kDa적구간내적생성잠능점각자총잠능비례축점증가。삼지적록(알)화적C-DBPs화N-DBPs생성잠능균이강소수성조분혹친수성조분위주，차록알화가도치친수성조분C-DBPs화N-DBPs생성잠능소점총량비례증가。
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.