Accéder directement au contenu Accéder directement à la navigation
Nouvelle interface
Article dans une revue

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.).
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [55 références]  Voir  Masquer  Télécharger
Contributeur : Romain Mailler Connectez-vous pour contacter le contributeur
Soumis le : mardi 19 juin 2018 - 22:54:09
Dernière modification le : jeudi 6 octobre 2022 - 10:03:29
Archivage à long terme le : : mardi 25 septembre 2018 - 16:49:56


Fichiers produits par l'(les) auteur(s)



Romain Mailler, Johnny Gasperi, Ghassan Chebbo, Vincent Rocher. Priority and emerging pollutants in sewage sludge and fate during sludge treatment. Waste Management, 2014, 34 (7), pp.1217-1226. ⟨10.1016/j.wasman.2014.03.028⟩. ⟨hal-00987018⟩



Consultations de la notice


Téléchargements de fichiers