Hao Rongjie, Zhang Yan, Du Tingting, Yang Li, Adeleye Adeyemi S, Li Yao
College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin 300350, China.
Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, United States.
Chemosphere. 2017 Apr;172:384-391. doi: 10.1016/j.chemosphere.2016.12.034. Epub 2016 Dec 8.
The relationship between the disinfection by-products (DBPs) formed with chlorination and chloramination techniques and the water chemistry of Haihe River was compared. Samples were collected at 28 different points within the mainstream and tributaries of the river. The DBPs investigated include trihalomethanes (THMs), haloacetic acids (HAAs), haloacetonitriles (HANs), haloketones (HKs), and trichloronitromethane. THMs formed when the samples were chlorinated mostly exceeded 100 and 600 μg/L in the mainstream and tributaries and in the estuary, respectively. A similar trend was obtained for HAAs whose concentrations exceeded 150 μg/L in almost all samples. The amounts of DBPs formed when the samples were chloraminated were much lower than when chlorination was used. The concentrations and species of THMs and HAAs in samples collected from sites near the estuary were different from those in samples collected from the mainstream, which may be due to high concentrations of Cl and Br. Although natural organic matter is the major cause of DBP formation during water disinfection, this study shows that other water chemistry factors such as salt composition and concentrations may also considerably affect the formation of DBPs in natural aquatic systems.
比较了氯化和氯胺化技术形成的消毒副产物（DBPs）与海河水质化学之间的关系。在海河干流和支流的28个不同点位采集了水样。所研究的消毒副产物包括三卤甲烷（THMs）、卤乙酸（HAAs）、卤乙腈（HANs）、卤代酮（HKs）和三氯硝基甲烷。水样氯化时形成的三卤甲烷在干流、支流和河口的含量大多分别超过100和600μg/L。卤乙酸也呈现类似趋势，几乎所有样品中的浓度都超过150μg/L。水样进行氯胺化时形成的消毒副产物量远低于氯化时。河口附近点位采集的水样中三卤甲烷和卤乙酸的浓度及种类与干流采集的水样不同，这可能是由于氯和溴的浓度较高。虽然天然有机物是水消毒过程中形成消毒副产物的主要原因，但本研究表明，盐成分和浓度等其他水质化学因素也可能对天然水生系统中消毒副产物的形成产生显著影响。
