Glossary and abbreviations

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Thermal desorption

Method for the decontamination of polluted soil that involves heating it to between 400 and 600°C to volatilize the pollutants; the gases emitted are then treated in bag filters to remove dust and particles. Thermal desorption almost entirely decontaminates the soil: it is suitable for heavy hydrocarbons (heavy fuel oil, tars, PAHs) and light hydrocarbons (solvents: benzene, toluene and xylene). The treated soil can be easily used as backfill. The process does not generate any odors or waste.

Transportation on demand (TOD)

Particular transport mode including traditional or collective taxis, school buses, car sharing and self-service bicycles. TOD services are different from other public transport services in that vehicles do not follow a fixed route and do not have a precise timetable, except sometimes to meet particular needs.

Treatment

Physical, thermal, chemical or biological processes, including sorting, that change the characteristics of the waste in order to reduce its volume or hazardous nature, facilitate its handling or enhance recovery (Council Directive 1999/31/EC of April 26, 1999):
- Biological treatment: Controlled process for the transformation by microorganisms, of fermentable waste into a slowly changing organic residue. For soil remediation, biological processes are also used, but they do not concern the area of waste.
- Thermal treatment: Waste treatment using the effect of heat, including in particular incineration.
- Physical-chemical treatment: this category of treatment includes among others, breaking down emulsions, neutralization, chrome removal, cyanide removal, dewatering, resin regeneration, chlorine removal, etc.

Trigeneration

The trigeneration process produces cooling, heating and power from a single energy source by recovering the engine's exhaust gas.

Trigeneration or trigen

System that uses the same natural gas-fired motor to generate electricity, and cooling and heat using the motor’s exhaust gas.