Installation: Désorption thermique (désorption thermique à basse température DTBT ou LTTD)

Type d'installation: Installation fictive

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Description:

Thermal desorption separates contaminants from soil. Soil is heated in a chamber in which water, organic contaminants and certain metals are vaporized. A gas or vacuum system transports vaporized water and contaminants to an off-gas treatment system (the design of a system aims to volatize contaminants, while attempting not to oxidize them; otherwise, thermal desorption would be another way of saying incinerator). It is important to note that thermal desorption does not destroy organic compounds.

Based on the operating temperature, this process is categorized into two groups.

In Low Temperature Thermal Desorption (LTTD), wastes are heated to between 90° and 320°C. LTTD is most often used for remediating fuels in soil. Unless heated to the higher end of the LTTD temperature range, organic components in the soil are not damaged, which enables treated soil to retain the ability to support future biological activity.

In High Temperature Thermal Desorption (HTTD), wastes are heated to 320° to 560 °C. HTTD is not used for oil/ fuel contaminated soil treatment.

Type de déchet accepté: