The Greater Paris Sanitation Authority – SIAAP Plant in Clichy

Year: 2022

Information about SIAAP:

SIAAP transports by its underground network and treats water used by nearly 9 million inhabitants of the Ile-de-France (domestic and industrial use).

Key figures:

  • 2.5 million m3 of wastewater treated per day
  • 1, 800 km2 of collection area
  • 6 treatment plants.

As in 2021, SIAAP decided to trust us for management and treatment of odors coming from their plant in Clichy.

Data (figures of 2014):

  • 316 million m3 of wastewater per year
  • Pumping capacity of 40 m 3 / s

Implemented odor treatment:

  • Deodorization of the upstream channel and the arrival of the outfalls. Installation of 250 m of high-pressure spraying ramp that supplies 166 spraying nozzles.
  • Neutralization of odors in the area of the grit chambers, the valve and the basin: installation of 150 m of high-pressure spray ramp feeding 100 spray nozzles.

The implemented engineering solution ensures a continuous diffusion of an odor neutralizer adapted to the encountered odor. This reagent is sprayed at a low concentration (0.12%) and allows for optimal control of odor nuisances (without adding odors).