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          Reference: Water

          Grasse "Les Roumiguières" (France)

          Integrated control solution for a Wastewater treatment plant with innovative process

          Reference: Water 15% design productivity
          Cost effective and size optimised solution 30% saved on wiring costs




          Customer profile:

          • The town of Grasse has entrusted to Degrémont the construction of a wastewater treatment facility (capacity of 25 000 Equivalent Inhabitants), using a new ultra-filtration membrane technology, called Ultrabox®.
          • This very compact technology offers a higher treatment capacity for a given plant size.
          • The Schneider Electric automation solution has been selected for the control system.
          • This plant is operated by Suez.
          • Graniou was the system integrator in charge of automation project execution.

          Customer objective and constraints:

          • Constraints concern discharge level in the Roumiguières valley. Searching for an adapted process, in a protected area, with space limitation.
          • Installation has to cope with the following constraints:
            - High availability
            - Flexible extension
            - Compact size



          Implementation methodology (main phases):

          1. Satisfy the customer's stringent specifications
          2. Implementation taking into account flexibility for future evolutions
          3. After sales service

          Solution overview (services, products, systems, architectures...):

          Solution overview (services, products, systems, architectures...):
          Automation structure is mainly based on:

          • Redundant warm standby programmable controllers, providing high system availability
          • STB distributed I/Os islands (for the different process functional units), providing complete integration of motor starters (simplified wiring to STB thanks to pre-made cabling) and variable speed drives (via STB canopen extension) on the FIP network. This solution is compact and easy to expand.



          Customer benefits:

          • High availability of installation
          • Flexible extension capabilities
          • Compact size

          Customer testimonies (Verbatim):

          • Stéphane Abram, Graniou system integrator project manager: "Thanks to STB islands, we saved on space, with a reduction of 3 or 4 metres of linear enclosure space. But we saved also on wiring: we have an estimating saving time in wiring of approximately 30% ...  We selected Tesys U motor starters for easy connection, compact size, and flexibility for the user: only 3 references cover 80% of the requirements of motor starters on the site".

          Schneider Electric differentiating values VS competitors:

          • Cost effective solution provided by compactness of equipment and wiring cost reduction, thanks to the associated use of STB distributed I/Os, TesysU motor starters and ATV drives.

          To know more 

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          Solution breakdown

          Main products & systems:
          Main services:
          • After sales service