title: Priority and emerging pollutants in sewage sludge and fate during sludge treatment.
abstract: This paper aims at characterizing the quality of different treated sludges from Paris conurbation in terms of micropollutants and assessing their fate during different sludge treatment processes (STP). To achieve this, a large panel of priority and emerging pollutants (n=117) have been monitored in different STPs from Parisian wastewater treatment plants including anaerobic digestion, thermal drying, centrifugation and a sludge cake production unit. Considering the quality of treated sludges, comparable micropollutant patterns are found for the different sludges investigated (in mg/kg DM - dry matter). 35 compounds were detected in treated sludges. Some compounds (metals, organotins, alkylphenols, DEHP) are found in every kinds of sludge while pesticides or VOCs are never detected. Sludge cake is the most contaminated sludge, resulting from concentration phenomenon during different treatments. As regards treatments, both centrifugation and thermal drying have broadly no important impact on sludge contamination for metals and organic compounds, even if a slight removal seems to be possible with thermal drying for several compounds by abiotic transfers. Three different behaviors can be highlighted in anaerobic digestion: (i) no removal (metals), (ii) removal following dry matter (DM) elimination (organotins and NP) and iii) removal higher than DM (alkylphenols - except NP - BDE 209 and DEHP). Thus, this process allows a clear removal of biodegradable micropollutants which could be potentially significantly improved by increasing DM removal through operational parameters modifications (retention time, temperature, pre-treatment, etc.).
authors.affiliation: LEESU, UMR MA 102, Université Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallée Cedex 2, France. Electronic address: maillerr@leesu.enpc.fr.
authors.forename: R
authors.initials: R
authors.lastname: Mailler
authors.affiliation: LEESU, UMR MA 102, Université Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallée Cedex 2, France.
authors.forename: J
authors.initials: J
authors.lastname: Gasperi
authors.affiliation: LEESU, UMR MA 102, Université Paris-Est, Agro Paris Tech, 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallée Cedex 2, France.
authors.forename: G
authors.initials: G
authors.lastname: Chebbo
authors.affiliation: SIAAP, Direction du Développement et de la Prospective, 82 avenue Kléber, 92700 Colombes, France. Electronic address: vincent.rocher@siaap.fr.
authors.forename: V
authors.initials: V
authors.lastname: Rocher
mesh_terms: D000693:Anaerobiosis; D002498:Centrifugation; D003890:Desiccation; D008401:Gas Chromatography-Mass Spectrometry; D010297:Paris; D012722:Sewage / Q000032:analysis / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D053719:Tandem Mass Spectrometry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D014877:Water Pollution, Chemical / Q000032:analysis* / Q000517:prevention & control*
chemical_list: D012722:Sewage; D014874:Water Pollutants, Chemical
keywords: Anaerobic digestion; Centrifugation; Emerging pollutant; Priority pollutant; Sludge; Thermal drying