Use of passive sampler to follow the discharge of organic micropollutants (priority and emerging substances) from wastewater treatment plants into surface water
Utilisation des échantillonneurs passifs pour suivre les rejets de micropolluants prioritaires et émergents depuis les stations d'épuration vers les eaux de surface
Résumé
Within the framework of the project AMPERES « Analyse de Micropolluants Prioritaires et émergents dans les Rejets et les Eaux Superficielles », studies were conducted on different wastewater treatment plants (WWTPs) to measure the concentrations of organic micropollutants in wastewaters and treated waters. Nevertheless the screening of surface water by grab sampling is difficult to interpret due to heterogeneity and variability. Thus compared with the grab sampling, the passive sampling has been studied to show its relevance for monitoring micropollutants in wastewater and aquatic systems impacted by these WWTP effluents. For this, two kinds of passive samplers were selected: the Semi Permeable Membrane Device (SPMD) and the Polar Organic Compound Integrative Sampler (POCIS). The first part of this study was the determination of the POCIS sampling rates (Rs) for Alkylphenol Polyethoxylates (APnEO) and Pharmaceutical Substances (PhACs). The second part consisted in a field validation of POCIS.