Our expertises and solutions of treatment for complex waste

Managing the most complex waste

For over 30 years, Séché and its subsidiary Trédi have provided highly technical solutions to treat all types of waste, even the most complex. The Group has unique installations in France and has developed specific know-how to ensure waste management that is guaranteed from both an environmental and a health point of view. What ever the type of waste and its risks (bacteriological, explosive, low radioactivity or toxicity,…), Séché has the solution. The Trédi Salaise site has a treatment stream called the direct stream which allows treatment without prior deconditioning of all waste types, reducing risk during the treatment chain.


Used extensively in buildings for decades, asbestos has since been identified as source of health risks in case of inhalation of fibers, and must be treated by specially trained teams.

Séché’s risk culture, developed over many years, in addition to the permanent search for techniques to secure worksites, have allowed the development of a unique know-how for asbestos removal operations, including in occupied buildings.  

Infectious Medical Waste

Waste from medical activities and professionals, due to its bacteriological and pathological risks, must be integrated into very specific waste management processes. From containers, to collection by specially adapted trucks, and treatment, the whole treatment process must respect very strict specifications.

Regardless of the nature, quantity or the condition of the waste, Séché, through its subsidiary Sodicome, can accompany medical professionals and structures, from providing the containers, to the collection and the disposal of the waste on the Group’s incineration sites.

Specialty gases

Séché has unique solutions for the treatment and recovery of industrial gases (inflammable, corrosive or toxic), collected in containers (Halon, SF6 and CFC) or for bottles of orphan gases, containing dangerous or unidentified gas, even if the bottles are damaged or the taps no longer work.

Treated in the direct stream (without deconditioning) and regardless of the volume or the conditioning, the treatment of these gases, which have a high impact in terms of greenhouse gases, prevents the emission into the atmosphere of nearly 7.8 million MTCO2 Eq. per year. 


Operating for more than 30 years, the Trédi St Vulbas site has become the international reference in the management and treatment of PCB contaminated waste, primarily PCB transformers and capacitors. The site offers solutions from the decontamination, to the destruction of PCB through incineration.

Trédi is a member of PEN, the PCB Elimination Network, a collaborative structure created in 2009 in order to promote and facilitate the exchange of information on the ecologically rational management of PCB.

Web site Trédi