Customized Products for Wastewater Treatment Plant

Technique Béton Contributes to the Modernization of one of the Largest Sewage Plants in France

The municipality Marseille Provence Métropole (MPM) treats sewage water for 18 parishes with more than 980,000 inhabitants in Greater Marseille. The wastewater treatment plant has been operating since 1987 and is located directly below the center of Marseille. On average, the plant treats 360,000 m³ of water per day, which is why it is one of the largest subterranean wastewater treatment plants on earth.

Because the plant no longer complied with European norms, it was fundamentally repaired and enlarged. A subterranean biological treatment with a total surface area of 20,000m² was added to the plant in order to minimize the water’s organic content as well as its contamination from detergents. Since the sewage plant discharges its treated water directly into the Mediterranean Sea, the water quality around Marseille was also significantly improved by this measure.

Technique Béton supplied the following products for this major project:

Repair Mortars Ravalchoc 0/5, Ravalchoc NF and Ravalchoc blanc
These two component mortar mixtures are used for levelling concrete and attain excellent compressive strength in a short amount of time.

Finimur Fin Clair
This one component levelling mortar closes pores in concrete, thus creating a smooth surface. It demonstrates excellent adhesion to different substrates.

Mould Release Agent Décosyntec 2001
This product allows easy removal of precast elements from the mould and offers reliable protection against corrosion. This product is a synthetic base.

Concrete Bonding Agent Copox colle reprise
Smoothly bonds fluid with solid concrete and is suitable for use on damp grounds. Copox colle reprise can be used for repairing cracks in concrete or, as in this case, for creating waterproof surfaces.

With their customized products, Technique Béton successfully contributed to the moder - nization of Marseille’s wastewater treatment plant.