How Séché supplies half of the steam needs of the Roussillon chemical platform

When there are smells, everything is fine, there is nothing toxic. When it is, it doesn’t smell anything“, smiles a spokesperson for Séché Environnement, taking a tour of the facilities of the Trédi incineration plant in Salaise-sur-Sanne (Isère), bathed in not always idyllic scents. Built in 1985, it became 2002 a subsidiary of the French group specializing in the treatment and recovery of waste On the site, a few employees and a few trucks travel between Atex zones (explosion risks), rotary kilns and large structures, alongside tanks of liquids toxic and tanks of chemicals or industrial gases, and here and there, on the ground or at height, small jets of steam continuously emerge.

On this site capable of treating 260,000 tonnes per year of hazardous and complex waste (industrial, sanitary or household), steam is a key resource for the neighboring Roches-Roussillon platform. Either the largest in the chemical industry in France, where 1,600 employees work in the multiple units of 16 companies, such as Seqens, Adisseo, Elkem Silicones, Hexcel or even Suez. Since the end of 2020, the Trédi plant has supplied the platform with half of its steam needs.


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