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Water Practice & Technology © IWA Publishing 2006 |
doi10.2166/wpt.2006.082
How to Optimize NOM Removal on Drinking Water Plants? : First Step: Making a Good Diagnosis Thanks to HPSEC
C. Bèle1, H. Habarou1, S. Ambonguilat2, J-P Croué2, M. Djafer1, V. Heim3
1Veolia Eau - Compagnie Générale des Eaux, Immeuble le Carillon, 6 esplanade Charles de Gaulle, F-92751 Nanterre Cedex, France
2LCEE UMR CNRS 6008, Université de Poitiers, 40 avenue du recteur Pineau, F-86022 Poitiers Cedex, France
3Syndicat des Eaux d’Ile-de-France (SEDIF) 14 rue Saint Benoît 75006 Paris, France
ABSTRACT
Working on behalf of the Syndicat des Eaux d’Ile de France (SEDIF), Veolia Eau - Compagnie Générale des Eaux operates three major drinking water treatment plants that supply 4 million inhabitants living in the Paris suburbs: Neuilly-sur-Marne, Choisy-le-Roi and Méry-sur-Oise. Almost one million cubic meters of water is produced each day, from the Marne, Seine and Oise Rivers respectively. Neuilly-sur-Marne and Choisy-le-Roi are conventional treatment plants, whereas Méry-sur-Oise is composed of two different units: a conventional line (biological treatment) and another one using nanofiltration process. The conventional line usually consists in PACl coagulation, settling, sand filtration, interozonation, granular activated carbon filtration, chloration and pH adjustment. At Choisy plant, raw water is slightly ozonated prior to coagulant addition (preozonation).
Keywords:diagnosis, drinking water plant, NOM removal, surface water
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