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Retrofit of a flue gas treatment installation at the energy recovery plant in Bourgoin-Jallieu, France

Retrofit of a flue gas treatment installation at the energy recovery plant in Bourgoin-Jallieu, France

As part of the ongoing drive to reduce pollutant emissions from the Bourgoin-Jallieu incinerator, we worked with Ronaval (Veolia) to simplify and optimize the existing flue gas treatment installation composed of activated carbon dosing system for the purpose of improving reagent injection rates.

The old system consisted of a silo extraction device combined with a buffer hopper, allowing the activated carbon to be dosed. We replaced this system with our ZDM 400, designed to facilitate the extraction and optimize dosing of activated carbon from the silo, with the aim of efficiently feeding two existing pneumatic transfer lines.

In this project, we provided a turnkey solution that included taking measurements on site, carrying out studies, supplying the equipment and installing it on site.

The upgrade of the existing facility, by redesigning it and adopting new, more compact equipment, made the most out of the premise’s space constraints. This new retrofit layout optimizes our facilities operations. Additionally, by making access easier for maintenance and inspection activities, we have significantly reduced the risk of downtime, ensuring greater continuity and efficiency in our work processes.

The improved reliability of the facility is a direct result of the modernization of its equipment and the integration of cutting-edge technologies. The aim of this upgrade is to significantly reduce breakdowns, ensuring much more reliable continuity of service and minimising unexpected interruptions that can disrupt operations.

At the same time, the adoption of new equipment, designed to simplify maintenance standards, has revolutionized our approach to maintenance. These technological advances now enable us to carry out maintenance work more quickly and cost-effectively, which has a positive impact on the overall operational efficiency. Thanks to these improvements, RONAVAL benefits from a system that is not only more robust, but also easier and less costly to maintain.

In addition, the reduction in dust particles released into the air considerably reduces the need for frequent cleaning and maintenance. This reduction in maintenance means lower operating costs and, at the same time, higher plant availability and uptime, optimising overall efficiency and productivity.

New system: what are the benefits?

  • Improved reliability of the CAP station: Ensures a constant, controlled feed, reducing flow variations that can affect the downstream process.
  • ZDM 400 dosing feeder under silo: Provides continuous activated carbon extraction without forming arches in the silo.
  • Two horizontal dosing devices, each 2 meters long: Enable precise dosing of activated carbon, optimising the quantity of reagent to be injected into the flue gas treatment.

The main objective of the system upgrade was to simplify the existing installation and optimise the reagent injection system that treats dioxin, furan, and mercury emissions. Thanks to this upgrade, we have improved our ability to control and limit the release of these harmful compounds, thereby playing a crucial role in protecting public health and preserving our environment.


The retrofit of this facility for the incineration of non-hazardous waste illustrates the constant evolution of industrial practices towards greater efficiency, reliability, and environmental responsibility. By adapting technologies and processes to current standards, Sodimate is not only optimising its operations but also contributing to a more sustainable future. These improvements reflect the commitment of the industry as a whole to adopting greener practices and minimising environmental impact, while ensuring the safety and health of workers, and surrounding communities.

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