Attached-growth cultures on fine media for small communities

Catherine Boutin (1) , A. Lienard (1) , J. Lesavre (2)

1 UR QELY - Qualité des eaux et prévention des pollutions
2 Agence de l'Eau Seine-Normandie

En France, ou l'on compte un grand nombre de petites collectivites, les communes rurales utilisent souvent, pour leur epuration des filieres telles que la boue activee ou le lagunage naturel. Les filieres" cultures fixees sur supports fins", simples d'exploitation, permettent d'elargir l'eventail des techniques d'epuration. Le but de cet article est de presenter ces filieres caracterisees par une charge organique surfacique faible et un alimentation alternee des reacteurs conduisant a une auto-regumlation de la biomasse. / France counts a large number of communities with less than 2000 inhabitants. The adjustment of wastewater treatment plants, easy to implement and to use, needed by these rural communities, enlarges the number of processes already widely used, such as waste stabilisation ponds and activated sludge. The purpose of this article is to describe the five wastewater treatment systems called "attached-growth cultures on fine media". A high and reliable quality level is obtained by supplying very small organic loads and an alternate feeding of the reactors leading to self-regulation of the fixed biomass( these sewerage plants don't have any secondary settlement tank).

Mots clés: TRAITEMENT DE L'EAU; TRAITEMENT DE L'EAU RESIDUAIRE; FILTRATION DE L'EAU; FILTRATION; SABLE; PETITE COLLECTIVITE; CULTURE; CULTURE FIXEE

Domaines: Sciences de l'environnement

Catherine Boutin, A. Lienard, J. Lesavre. Attached-growth cultures on fine media for small communities. 4th conference on small wastewater treatment plants, Apr 1999, Stratford-upon-Avon, United Kingdom. 4 p. ⟨hal-00508358⟩