Case Study N°OD2 – trsMEDOR® – Màj du 02/06/2022 Case Study Analysis and monitoring of the content of sulfur compounds in the gaseous effluents of a paper mill Context & challenges The paper industry is highly recognized for odor nuisance generated by the process of manufacturing paper pulp, cardboard or other products derived from wood, as well as the reagents used in these processes. Following the publication of a ministerial decree on September 10, 2020, French manufacturers in the paper sector must respect with compliance requirements on the quality of the discharges of hazardous substances into the air, in particular sulfur compounds, from installations classified for environmental protection. Industrial sites are particularly targeted by these new guidelines and must adapt their monitoring systems. More information :Extrait de l’arreté ministériel du 10/09/2020 / NOR : TREP2013116A Chromatotec® solution Chromatotec® has developed continuous analysis solutions for monitoring of odorous molecules such as sulfur compounds. These control systems can be deployed at several locations on the industrial site, such as near outlet of smoke extraction chimneys, around the washing and bleaching processes, near outlet from lime kilns and regeneration boiler (BWE). Several paper mills in France and around the world are now equipped with our trsMEDOR® solution allowing the identification and quantification of H2S, SO2, DMDS, DES and DMS, mercaptans: MM, EM from a few ppb and up to several %. Other compounds are available on request. This chromatograph is equipped with an electrochemical detector specific to sulfur compounds, a nitrogen generator, and an internal calibration module offering a 100% autonomous and automated solution requiring only a power supply. Integrated into a thermoregulated box (in option), this turnkey solution has an industrial computer at eye level as well as an automatic calibration module allowing the device to be calibrated and/or validated in ppb and/or ppm. A two ways sampling system, with double automatic injection loop is available as an option in order to be able to analyze with the same device the input and the output of a filter for example. The trsMEDOR® is also used on industrial sites such as wastewater treatment plants, recovery of organic matter or even food production sites, in the context of monitoring the levels of odorous compounds in the ambient air or channeled flows. [email protected] www.chromatotec.com Online Gas and Liquid Ana

Case Study N°OD2 – trsMEDOR® – Màj du 02/06/2022 Chromatogramme obtenu avec le trsMEDOR® : Analyse du DMDS, H2S, Methyl et Ethyl Mercaptans No auxiliary gas needed for operation and calibration (air supplied by built-in generator) Reliability and linearity of the ED detector Analysis of the sample at atmospheric pressure using the sampling pump Automatic internal calibration with permeation tubes certified at ppb or ppm level Data acquisition and processing The data is automatically collected by our proprietary VistaCHROM software and interface and stored in the internal computer. Data such as...