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            Success Story: Water

            Grasse "Les Roumiguières" (France)

            Integrated control solution for a Wastewater treatment plant with innovative process

            Success Story: Water Cost effective and size optimised solution 30% saved on wiring costs
            Cost effective and size optimised solution 30% saved on wiring costs

             

            I. CUSTOMER ENVIRONMENT / PROJECT CONTEXT

             

            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
             

            II. SOLUTION IMPLEMENTATION

             

            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.
             

            III. RESULTS / ACHIEVEMENT

             

            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.
             
             
             
             
             

            Solution breakdown

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