Seasonal evaluation of the presence of 46 disinfection by-products throughout a drinking water treatment plant

The Science of the Total Environment
Maria SerranoMercedes Gallego

Abstract

In this work, we studied a total of 46 regulated and non-regulated disinfection by-products (DBPs) including 10 trihalomethanes (THMs), 13 haloacetic acids (HAAs), 6 halonitromethanes (HNMs), 6 haloacetonitriles (HANs) and 11 aldehydes at different points in a drinking water treatment plant (DWTP) and its distribution network. Determining an increased number of compounds and using accurate, sensitive analytical methodologies for new DBPs can be useful to overcome some challenges encountered in the comprehensive assessment of the quality and safety of drinking water. This paper provides a detailed picture of the spatial and seasonal variability of DBP concentrations from raw water to distribution network. Samples were collected on a monthly basis at seven different points in the four seasons of a year to acquire robust data for DBPs and supplementary quality-related water parameters. Only 5 aldehydes and 2 HAAs were found in raw water. Chlorine dioxide caused the formation of 3 new aldehydes (benzaldehyde included), 5 HAAs and chloroform. The concentrations of DBPs present in raw water were up to 6 times higher in the warmer seasons (spring and summer). The sedimentation process further increased their concentrations and caused ...Continue Reading

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Citations

Nov 26, 2015·The Science of the Total Environment·Panagiotis IoannouKonstantinos C Makris
Aug 9, 2017·Environmental Monitoring and Assessment·Fatma Büşra YamanErhan Gengeç
Sep 14, 2017·Journal of Environmental and Public Health·Nsikak U BensonAdebusayo E Adedapo
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Mar 4, 2020·The Science of the Total Environment·Paul M BradleyAbderrahman Zehraoui
Sep 26, 2017·Environmental Science & Technology·Kelly D Good, Jeanne M VanBriesen

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