• Traffeyère WWTP
  • Treatment scheme

The wastewater treatment plant is located in Traffeyère at the municipal boundary of St-Quentin-Fallavier, Satolas and Bonce.

It collects and treats wastewater in seven municipalities (Satolas and Bonce, St-Quentin-Fallavier, Villefontaine, Oven, Vaulx-Milieu, and the Isle of Abeau The Verpillière) and part of two municipalities (St. Alban Roche and Roche).

Sized to 110,000 population equivalent, after the planned extensions, the treatment plant now processes 85,000 population equivalent.

It has been completely renovated and upgraded in 2000. Today is one of the most modern and most successful of the department: 4,000,000 m3 of wastewater are treated each year by the station and 6,500 tons of sludge are produced.

Semidao ensures management, maintenance, repair and renewal of equipment and disposal of sludge and waste.

A model of the WWTP was deemed necessary to optimize process performance and to seek for energy savings.



Implementation of plant model and investigation of scenarios. The project is performed in collaboration with Primodal.



Client: Semidao
Country:  Villefontaine, FR
Date: 2011-2012