Biofilm development and hydraulic conditions in sewers

Marie-Noëlle Pons (1) , Frédérique Larrarte (2) , Xavier France (3) , L Lebouc (2) , David Mabilais (2) , Pierre Augris (2)

1 LRGP - Laboratoire Réactions et Génie des Procédés
2 IFSTTAR/GERS/EE - Eau et Environnement
3 Groupement pour l'Evaluation des Mesures en Continu dans les Eaux et en Assainissement

The purpose of the paper is to study the development of biofilms on coupons exposed to wastewater in sewers. The coupons are made of different materials (glass, PMMA, concrete, brick). They are analysed by image analysis to evaluate the amount of biofilm attached to them. The relations between opacity or darkness and the number of days the coupons have been immersed in the wastewater show that biofilm detachment is easier from smooth surface (glass, PMMA) than from rough ones (concrete, brick)

Mots clés: BRIQUE; BETON; VERRE; ANALYSE

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Marie-Noëlle Pons, Frédérique Larrarte, Xavier France, L Lebouc, David Mabilais, et al.. Biofilm development and hydraulic conditions in sewers. 7th International Conference on Sewer Processes & Networks, Sep 2013, France. 8p, schémas, graphiques, bibliogr. ⟨hal-00914549⟩