Contaminants of Emerging Concern as Novel Groundwater Tracers for Delineating Wastewater Impacts in Urban and Peri-urban Areas

McCance, W, Jones, O, Edwards, M, Surapanenin, A, Chadalavada, S and Currell, M 2018, 'Contaminants of Emerging Concern as Novel Groundwater Tracers for Delineating Wastewater Impacts in Urban and Peri-urban Areas', Water Research, vol. 146, pp. 118-133.


Document type: Journal Article
Collection: Journal Articles

Title Contaminants of Emerging Concern as Novel Groundwater Tracers for Delineating Wastewater Impacts in Urban and Peri-urban Areas
Author(s) McCance, W
Jones, O
Edwards, M
Surapanenin, A
Chadalavada, S
Currell, M
Year 2018
Journal name Water Research
Volume number 146
Start page 118
End page 133
Total pages 16
Publisher I W A Publishing
Abstract Management and treatment of environmental impacts from wastewater treatment plants (WWTPs) is amajor, worldwide, sustainability challenge. One issue associated with WWTP operation is the potentialfor groundwater contamination via leaking or infiltration of wastewater, particularly with inorganicnutrients (ammonia and nitrate) as well as persistent organic compounds. Despite the potential for suchcontamination to create environmental and health risks, conventional methods, such as the assessmentof major ions, nutrients, bacteriological indicators and conventional tracers (such as stable and radio-genic isotopes) are often unable to provide accurate delineation of multiple potential sources ofcontamination. This is particularly important for WWTPs which of ten occur in urban, peri-urban orintensively farmed agricultural areas where multiple potential sources (such as livestock, fertilisers,wastewater irrigation, and domestic septic systems) may contribute similar contaminants. This reviewexplores the applicability of promising novel groundwater tracers, such as Contaminants of EmergingConcern (CECs) and isotopic tracers, which can be used in conjunction with conventional tracers (i.e. co-tracers) to provide a more definitive assessment of contaminant sources, plume delineation and even(potentially) indicating the age of contam ination (e.g., recent vs. legacy). The suitability of the novelgroundwater tracers is evaluated according to four key criteria: (i). sufficient presence in raw wastewaterand/or treated effluents; (ii) diagnostic of WWTP impacts as opposed to other potential off-sitecontamination sources; (iii) persistence in the subsurface environment; and (iv) amenable to rapidand sensitive analysis. Further analysis of various classes of CECs along with improved detection limitsassociated with improvements in analytical methodologies should allow for future application ofpromising groundwater tracers, providing WWTP operators and regulatory authorities a more de
Subject Separation Science
Hydrogeology
Environmental Chemistry (incl. Atmospheric Chemistry)
Keyword(s) Groundwater contamination
Wastewater
contamination
Wastewater treatment plants
Contaminants of Emerging Concern (CECs)
Novel groundwater traces
Contaminant delineation
DOI - identifier 10.1016/j.watres.2018.09.013
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0043-1354
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