Dioxins, Furans and PCBs in Recycled Water for Indirect Potable Reuse

International Journal of Environmental Research and Public Health

Clemencia Rodriguez¹  Angus Cook¹  Brian Devine¹  Paul Van Buynder³  Richard Lugg³  Kathryn Linge² 

[1] School of Population Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, 35 Stirling Hwy, (M431) Crawley WA 6009 Western Australia, Australia;Curtin Water Quality Research Centre, Department of Applied Chemistry, Curtin University of Technology, GPO Box U1987, Perth 6845 Western Australia;Department of Health, Government of Western Australia, Grace Vaughan House 227 Stubbs Terrace, Shenton Park, WA 6008 Western Australia, Australia

关键词: water recycling;    water quality;    persistent organic pollutants;    health risk assessment;   

DOI  :  10.3390/ijerph5050356

来源: mdpi

【 摘 要 】

An assessment of potential health impacts of dioxin and dioxin-like compounds in recycled water for indirect potable reuse was conducted. Toxic equivalency factors (TEFs) for 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDFs) and dioxin-like polychlorinated biphenyls (PCBs) congeners have been developed by the World Health Organization to simplify the risk assessment of complex mixtures. Samples of secondary treated wastewater in Perth, Australia were examined pre-and post-tertiary treatment in one full-scale and one pilot water reclamation plant. Risk quotients (RQs) were estimated by expressing the middle-bound toxic equivalent (TEQ) and the upper-bound TEQ concentration in each sampling point as a function of the estimated health target value. The results indicate that reverse osmosis (RO) is able to reduce the concentration of PCDD, PCDF and dioxin-like PCBs and produce water of high quality (RQ after RO=0.15). No increased human health risk from dioxin and dioxin-like compounds is anticipated if highly treated recycled water is used to augment drinking water supplies in Perth. Recommendations for a verification monitoring program are offered.

【 授权许可】

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