Existence of Pharmaceutical Compounds in Tertiary Treated Urban Wastewater that is Utilized for Reuse Applications

Despo Fatta-Kassinos (), E. Hapeshi, A. Achilleos, S. Meric, M. Gros, M. Petrovic and D. Barcelo

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2011, vol. 25, issue 4, 1183-1193

Abstract: Research on the effects of chemical pollution in the environment that is related to urban wastewaters’ discharge and reuse until recently was focused almost exclusively on conventional pollutants. During the last several years though there has been a growing level of concern related to the hypothesis that various chemicals may exhibit endocrine disrupting effects. In addition, thousands of tons of pharmacologically active substances are used annually ending up in the wastewaters. In many countries facing prolonged droughts and implementing wastewater reuse schemes for irrigation and groundwater discharge, the existence of xenobiotic compounds in the tertiary treated wastewaters constitutes a new concern. This study describes the application of a recently developed multi-residue method for the determination of 29 multi-class pharmaceuticals using off line solid phase extraction followed by liquid chromatography–triple quadrupole mass spectrometry (LC–MS–MS). The method was applied for the analysis of pharmaceutical residues at three sewage treatment plants in Cyprus serving major coastal Mediterranean cities. The presence of 19 pharmaceuticals was confirmed. For some of the compounds high concentrations were obtained for the final effluents (e.g. ofloxacin: 4.82 μg/L, diclofenac: 5.51 μg/L, carbamazepine: 27.27 μg/L, metoprolol: 9.59 μg/L). Concerning the elimination potential, what was derived from the study is that the biological treatment step contributes the most to the removal of the compounds while sand filtration and chlorination steps reduce slightly the residual concentrations. Copyright Springer Science+Business Media B.V. 2011

Keywords: Cyprus; Multi-residue method; Pharmaceuticals; Reuse; Wastewater; Xenobiotics (search for similar items in EconPapers)
Date: 2011
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DOI: 10.1007/s11269-010-9646-4

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