Grésillons 2 sewage treatment plant

Extension of the Grésillons sewage treatment plant

Water Treatment

France, 2008-2012

General description

For the extension of the Grésillons 2 sewage plant, Bouygues Travaux Publics was in charge of earthworks, civil works for the plant and buildings, roads and pavements, secondary works and landscaping. With the completion of phase 2, the plant capacity was multiplied by 3 to 300,000 m3 per day (of 1.5 to 2 million population equivalent).

In addition, Bouygues Travaux Publics, which had already built phase 1, provided assistance for operation.

MAIN CHARACTERISTICS

The works comprise:

- construction of a dozen buildings (civil works), including wet and dry zones,

- construction of seven circular concrete tanks,

- pipeworks with diameters from 500 to 2800 mm linking the buildings,

- modification of existing offices and administrative buildings.

Consortium

BOUYGUES TRAVAUX PUBLICS 60% / SPIE BATIGNOLLES 40%

Project owner

SYNDICAT INTERDEPARTEMENTAL D'ASSAINISSEMENT DE L'AGGLOMERATION PARISIENNE (SIAAP)

Key figures

300,000 m3

/day treatment capacity

3

times the capacity of Grésillons 1

1

project in consortium with process integrator (OTV)

Locations

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