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Ex-Situ Thermal Remediation
GTR-E is an evolution of the GTR line of technology specially designed for batch ex-situ thermal desorption of onsite excavated soils. The contaminated soils are excavated and placed in a pile. While building the pile, heater tubes are layered following a "lasagna" process: a first series of heater tubes are placed atop a first layer of contaminated soil, and then covered by a new layer of contaminated soil, wherein the process is scaled as necessary for the project"s goals. In a standard design, piles are 60 feet long and 10 feet high, and the volume of the soil to be treated determines the final width of the pile.For larger volumes, the number of piles will be multiplied, and piles are set-up week after week. With such an overlapping set-up, large treatment capacities can be achieved cost-effectively.
The main innovations of GTR-E are related to the burners that are adapted for working in the open air, regardless of dust and weather conditions, as well as additional features of energy conservation. Return tubes are placed throughout the pile to maximize the heat exchange of hot gases throughout the soil matrix.
Benefits of mobilization are easily identifiable. Mobilization of the thermal treatment equipment is rapid. Transportation of the equipment is inexpensive, and set up is accomplished with limited man hours. Prices for entire GTR-E batch treatments are often less than the mobilization fees for small rotating kiln type plants.
