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对我国南方某河流原水进行了一个水文年的监测,通过树脂吸附法等手段对水样中的有机物进行分离富集,分析了藻类及颗粒性有机物、溶解性有机物中不同极性组分对消毒副产物(DBPs)的贡献,同时分析其季节性变化规律。研究发现,原水中DBPs的生成势与有机物含量的变化基本一致,三卤甲烷、卤乙酸和三氯乙醛等3类DBPs前体物含量均在夏季最高;藻类及颗粒性有机物对DBPs的贡献率为6.07%~30.69%,且对三氯乙醛的贡献率要大于对三卤甲烷和卤乙酸的贡献率;原水中的溶解性有机物在春夏季以亲水性有机物为主,而在秋冬季则以强疏水性有机物为主,并且成为主要的DBPs前体物。
A water year in a river of our country was monitored by a hydrological year. The organic compounds in the water sample were separated and enriched by means of resin adsorption. The effects of different polar components in algae, granular organic matter and dissolved organic matter on disinfection By-products (DBPs) contribute to their seasonal variations. The results showed that the generation trend of DBPs in raw water was basically consistent with that of organic matter. The content of DBP precursors such as trihalomethanes, haloacetic acids and trichloroacetaldehyde were the highest in summer. The contribution of algae and particulate organic matter to DBPs The rate of contribution to trichloroacetal is greater than the contribution to trihalomethanes and haloacetic acid; the dissolved organic matter in raw water is mainly hydrophilic organic matter in spring and summer, while in autumn Winter is dominated by strong hydrophobic organic compounds, and become the main DBPs precursors.