Collective Sanitation (Centralised waste water treatment)
Collective sanitation is our original sector of activity and still our main field. We have experience with hundreds of 100 to 6000 PE installations
and dozens of pioneer stations, the jewels of the reed filter bed process in France and elsewhere throughout the world.
We are the national leader in this sector and the most committed to furthering research and development.
A few of our installations, presented in chronological order of construction:
Roussillon
The Roussillon station in the Vaucluse, hidden at the foot of the famous ochre cliffs that made this village famous, was our first
major achievement (1250 PE) and the beginning of the national market for the process in France using the vertical 2-stage
configuration recommended by Cemagref. The unit has been operating for 12 years. No surprises.
The quality at the outlet is considerably better than required by the mandatory regulations, and the operating costs are lower than
expected. The first sludge removal operation is scheduled for 2011.
Description of installation at Roussillon
Nègrepelisse
The Nègrepelisse station in Tarn-et-Garonne is one of the biggest planted filters in France (the biggest in 2008 when it was built)and one of the most effective judged by the water quality. It has contributed to expanding the field of application of the process considerably. Previously the process had been limited to 2000 PE. This station optimizes all the strong points of the process,i.e. simplicity, easy to expand, fits in with the landscape, lower construction and operating costs. The existing lagoons have beenintegrated into the project. In the summer they are used to improve the outflows during period of low waters when the receiving waterways are more vulnerable.
Bélarga et Campagnan
The Bélarga and Campagnan station in the Hérault took the process over the 2000 PE line in a one-stage recirculating installation that previously had only been used for 100 PE. The station has been growing its assets: less land required, lower installation and operating costs, easy to maintain and expand, etc.
