title: Occurrence of eight household micropollutants in urban wastewater and their fate in a wastewater treatment plant. Statistical evaluation.
abstract: The occurrence in urban wastewater of eight micropollutants (erythromycin, ibuprofen, 4-nonylphenol (4-NP), ofloxacin, sucralose, triclosan, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS)) originating from household activities and their fate in a biological wastewater treatment plant (WWTP) were investigated. Their concentrations were assessed in the liquid and solid phases (sewage particulate matter and wasted activated sludge (WAS)) by liquid chromatography-tandem mass spectrometry. The analysis of sewage from two different urban catchments connected to the WWTP showed a specific use of ofloxacin in the mixed catchment due to the presence of a hospital, and higher concentrations of sucralose in the residential area. The WWTP process removed over 90% of ibuprofen and triclosan from wastewater, while only 25% of ofloxacin was eliminated. Erythromycin, sucralose and PFOA were not removed from wastewater, the influent and effluent concentrations remaining at about 0.7 μg/L, 3 μg/L and 10 ng/L respectively. The behavior of PFOS and 4-nonylphenol was singular, as concentrations were higher at the WWTP outlet than at its inlet. This was probably related to the degradation of some of their precursors (such as alkylphenol ethoxylates and polyfluorinated compounds resulting in 4-NP and PFOS, respectively) during biological treatment. 4-NP, ofloxacin, triclosan and perfluorinated compounds were found adsorbed on WAS (from 5 ng/kg for PFOA to 1.0mg/kg for triclosan). The statistical methods (principal component analysis and multiple linear regressions) were applied to examine relationships among the concentrations of micropollutants and macropollutants (COD, ammonium, turbidity) entering and leaving the WWTP. A strong relationship with ammonium indicated that some micropollutants enter wastewater via human urine. A statistical analysis of WWTP operation gave a model for estimating micropollutant output from the WWTP based on a measurement of macropollution parameters.
authors.affiliation: Laboratoire Interdisciplinaire des Environnements Continentaux, CNRS, Université de Lorraine, 15 Avenue du Charmois, 54501 Vandœuvre-lès-Nancy cedex, France. Electronic address: laure.pasquini@anses.fr.
authors.forename: Laure
authors.initials: L
authors.lastname: Pasquini
authors.affiliation: Laboratoire d'Hydrologie de Nancy, ANSES, 40 rue Lionnois, 54000 Nancy, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Munoz
authors.affiliation: Laboratoire Réactions et Génie des Procédés, CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy cedex, France.
authors.forename: Marie-Noëlle
authors.initials: MN
authors.lastname: Pons
authors.affiliation: Laboratoire Interdisciplinaire des Environnements Continentaux, CNRS, Université de Lorraine, 15 Avenue du Charmois, 54501 Vandœuvre-lès-Nancy cedex, France.
authors.forename: Jacques
authors.initials: J
authors.lastname: Yvon
authors.affiliation: Laboratoire d'Hydrologie de Nancy, ANSES, 40 rue Lionnois, 54000 Nancy, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Dauchy
authors.affiliation: GEMCEA, 149 rue Gabriel Péri, 54500 Vandœuvre-lès-Nancy, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: France
authors.affiliation: Laboratoire Réactions et Génie des Procédés, CNRS, Université de Lorraine, 1 rue Grandville, 54001 Nancy cedex, France.
authors.forename: Nang Dinh
authors.initials: ND
authors.lastname: Le
authors.affiliation: Centre de Recherches Pétrographiques et Géochimiques, CNRS, Université de Lorraine, 15 rue Notre Dame des Pauvres, 54501 Vandœuvre-lès-Nancy cedex, France.
authors.forename: Christian
authors.initials: C
authors.lastname: France-Lanord
authors.affiliation: Laboratoire Interdisciplinaire des Environnements Continentaux, CNRS, Université de Lorraine, 15 Avenue du Charmois, 54501 Vandœuvre-lès-Nancy cedex, France.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Görner
mesh_terms: D017738:Alkanesulfonic Acids / Q000032:analysis; D002210:Caprylates; D002947:Cities / Q000706:statistics & numerical data; D004784:Environmental Monitoring; D004917:Erythromycin / Q000032:analysis; D005466:Fluorocarbons / Q000032:analysis; D006798:Housing / Q000706:statistics & numerical data; D007052:Ibuprofen / Q000032:analysis; D015242:Ofloxacin / Q000032:analysis; D010636:Phenols / Q000032:analysis; D013395:Sucrose / Q000031:analogs & derivatives / Q000032:analysis; D014260:Triclosan / Q000032:analysis; D014865:Waste Disposal, Fluid / Q000706:statistics & numerical data*; D062065:Wastewater / Q000737:chemistry* / Q000706:statistics & numerical data; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D017738:Alkanesulfonic Acids; D002210:Caprylates; D004917:Erythromycin; D005466:Fluorocarbons; D007052:Ibuprofen; D015242:Ofloxacin; D010636:Phenols; D013395:Sucrose; D014260:Triclosan; D062065:Wastewater; D014874:Water Pollutants, Chemical; C023036:perfluorooctanoic acid; C026285:trichlorosucrose; C076994:perfluorooctane sulfonic acid; C041594:4-nonylphenol
keywords: Household micropollutants; Modeling; Sludge; Statistical analysis; Urban wastewater; Wastewater treatment plant