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Current projects

Back to all projects

SADE group is back in the Paris region’s drinking water plants

November 2, 2020

With the award of the contract to renovate the Méry-sur-Oise drinking water production plant decanting unit for SEDIF as part of a consortium alongside SETHA.

Since the changes made to the terms of SEDIF’s service delegation contracts, drinking water plant contracts had become few and far between for the Greater Paris Regional Division. But that doesn’t mean it’s lost its touch, and it’s now back with a bang with this valuable contract won by the Argenteuil Agency.

The contract in brief

As head of the consortium, SADE won Package 2, along with its partners SETHA and INEO (ENGIE’s electrical engineering subsidiary). It covers hydraulic equipment, electricity, processes, ventilation and automation.

Works

The works, which will last 39 months, are set to begin next spring following the preparatory phase, and will include:

  • Replacement of the treatment equipment  (100% SADE): 3 identical decanters and 4 primary agitators and 4 secondary agitators each, one of which also includes 4 sludge removal scrapers.
  • Replacement of the decantation unit’s decanted water and discharge pipes (50% SADE – 50% SETHA)

The works will be carried out in phases to guarantee service continuity, as the plant cannot be fully shut down for this length of time. To ensure everything goes smoothly, the decanters will be shut down section by section and the operator will painstakingly lock and tag out each section for a precise, firm period.

Replacing the equipment (including the agitators and scrapers) will be particularly tough. Its handling will require the existing equipment to be removed, working to a precise schedule. The material and pipes will be transported via the roof, requiring special machinery.

10 to 15 SADE staff will work continuously on the site, mainly in an enclosed space.

Sébastien CHA, Argenteuil Agency Manager

”What was so good about our bid was that we were able to model the work, proving that everything could be done, taking account of all the project requirements, particularly continuous service.”

Méry-sur-Oise plant

Created in 1923, the Méry-sur-Oise plant supplies 152,000m3 of water to 850,000 inhabitants of Paris’s northern suburbs. To meet the growing needs of an increasingly urbanised region, its daily production capacity was increased to 340,000m3 in 1999 with the creation of a new production section: the membrane section. Given their specific characteristics (higher dissolved organic matter content), the waters of the River Oise actually require specially advanced treatment. This made nanofiltration membrane filtration technology a must.

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23-25 av. du Docteur Lannelongue
75014 Paris

  • IN BRIEF
    • Profile
    • Anchoring
    • Path
  • PROFESSIONS
    • Systems
    • Infrastructure
  • SERVICES & SOLUTIONS
    • Regional authorities
    • Industries
    • Major infrastructures
  • REFERENCES
  • CSR
  • APPLICATIONS
  • NEWS
  • CONTACT

Legal notice Ι Anticorruption code of conduct Ι Occupational gender equality index Ι Personal Data Protection Policy Ι Suppliers relationship © 2021 All rights reserved

Fraud Warning

It has come to our attention that emails have been sent by individuals falsely claiming to be SADE employees. The objective of these emails is to place false orders using our company’s name. Read more…

In the emails detected to date, the fraudsters are writing from the addresses “[email protected]” or “[email protected]”. They use our logo and Paris 75014 address.

We wish to draw your attention to the fact that these email addresses do not correspond to SADE’s email address, which bears the domain name sade-cgth.fr.

We thus advise caution in your communication and request that you do not exchange documents or information with persons other than your usual contacts at SADE. If you are in any doubt, we advise you to speak to your usual contacts prior to the transmission of any document or information.

As fraudsters regularly change their operating mode, we also recommend you alert all your employees likely to have dealings in this area (purchasing, accounting or payroll, etc.).

SADE systematically lodges an official complaint in response to such acts. We would be grateful if you could notify us at the following address of any contact you may have had with individuals claiming to be employees of our company: [[email protected]]