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Selection of indicator contaminants of emerging concern when reusing reclaimed water for irrigation — A proposed methodology by P. Verlicchi; V. Grillini; E. Lacasa; E. Archer; P. Krzeminski; A.I. Gomes; V.J.P. Vilar; M.A. Rodrigo; J. Gäbler; L. Schäfer is a Environmental Science article available to read on EtoBox.

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Organic and microbial contaminants of emerging concern (CECs), even though not yet regulated, are of great concern in reclaimed water reuse projects. Due to the large number of CECs and their different characteristics, it is useful to include only a limited number of them in monitoring programs. The selection of the most representative CECs is still a current and open question. This study presents a new methodology for this scope, in particular for the evaluation of the performance of a polishing treatment and the assessment of the risk for the environment and the irrigated crops. As to organic CECs, the methodology is based on four criteria (occurrence, persistence, bioaccumulation and toxicity) expressed in terms of surrogates (respectively, concentrations in the secondary effluent, removal achieved in conventional activated sludge systems, Log K ow and predicted-no-effect concentration). It consists of: (i) development of a dataset including the CECs found in the secondary effluent, together with the corresponding values of surrogates found in the literature or by in-field investigations; (ii) normalization step with the assignment of a score between 1 (low environmental impact)

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Author

P. Verlicchi; V. Grillini; E. Lacasa; E. Archer; P. Krzeminski; A.I. Gomes; V.J.P. Vilar; M.A. Rodrigo; J. Gäbler; L. Schäfer

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)