Sludge drying reed beds (SDRB) are used in France …..

Sludge drying reed beds (SDRB) are used in France since the early 90s, based on research conducted by Irstea (formerly Cemagref) in collaboration with SAUR company. Previously initiated in other countries (Germany, Denmark … ), the process suffers from a misunderstanding in France, not only related to design rules but also operation and management, to obtain satisfactory dry matter contents in the final deposit product. This guideline summarizes several research programs carried out during recent years (2007- 2012) to better define the design rules and operation and management for the treatment of activated sludge and septage as well. This guideline addresses to designers, builders and owners. It presents the processes implied in SDRB, treatment strategies as well as the design and management rules to guarantee final dry matter content of 25 % and 30 % minimum for activated sludge and septage respectively. SDRBs allow a sludge reduction of about 50 % of dry matter as well as a decrease of operation task in sludge treatment lines.

• AUTEURS Pascal Molle, Ingénieur de recherche (Irstea), pascal.molle@irstea.fr, coordonnateur de la thématique de recherche Julie Vincent, Ancienne doctorante Irstea, Post doctorante à l’Ecole polytechnique de Montréal Stéphane Troesch, Ancien doctorant Irstea, Chargé de commercialisation et R&D (Epur Nature), stephane.troesch@epurnature.fr Gilles Malamaire, chargé de projet (ARPE PACA), g.malamaire@arpe-paca.org • CORRESPONDANTS Onema : Céline Lacour, Chargée de mission sur l’eau et les aménagements urbains (Onema), celine.lacour@onema.fr Irstea : Pascal Molle, Ingénieur de recherche (Irstea), pascal.molle@irstea.fr Droits d’usage : accès libre Niveau géographique : national Couverture géographique : Nationale] Niveau de lecture : professionnels, experts