Implementation of the Langoadec borewell and treatment station (arsenic), and transfer of water to the Pont-Cléau plant:
- Pumping in the borewell 20 m3/h,
- pH adjustment by injection of caustic soda,
- Oxidation of the arsenic by injection of chlorine,
- Filtration on iron oxide-hydroxide Æ 1.60 m,
- Filtration on activated carbon (CAG) Æ 1.60 m,
- Pumping to the Pont-Cléau site 20 m3/h,
- Filter washing: air pressure booster + pumps 64 m3/h,
- 50 m3 washing water tank,
- Instrumentation (pH measurement, turbidity, etc.)
- Electricity, automation system and supervision
