Sustainable management of port dredged sediment

Projet terminé

Project affiliated to:
Project leader Ecole Nationale des Travaux Publics de l'Etat
Industrials partners In Vivo, INERIS, Insavalor
Research partners INSA Lyon, BRGM, CETMEF, Institut National de l'Environnement industriel et des risques / Partenaires institutionnels : Conseil Général du Var, Conseil Général du Finistère
Budget 1 635 K€
Cofinanceur publics ANR
Year of labeling 2007 – Joint Certification by Pôle Mer Bretagne
Year of co-financing 2007

The objective of this project is to remove the main obstacles facing the drafting of a risk assessment methodology adapted to the problem of land disposal of port dredged sediment.

This type of approach is widely used throughout the world in the management of polluted materials in other situations but is still little used in France. However there is currently a resurgence of interest given its undeniable role in establishing new channels.

The main scientific obstacles facing the drafting of an ecological risk assessment methodology specifically targeting marine sediment depots are mainly due to the fact that there is still only a partial understanding of the different physical, chemical and biological mechanisms.

These mechanisms are involved in the storage of such saline polluted materials, especially during the disposal phase, then under when there is rain, and finally when there is contact with potentially contaminated water as a result of the continental ecosystems present.

They concern in particular the necessity of taking into account the issue of space and time related scales in order to be able to give a realistic forecast about the long term impact (or not) of the pollutant emissions on the environment.

The study of these mechanisms and their interaction has made significant progress in recent years at a national level.