Combining In Situ Thermal Remediation technologies provides an optimal solution for many sites.
Steam Enhanced Extraction (SEE) may be combined with either the Electro-Thermal Dynamic Stripping Process (ET-DSP™), or with In Situ Thermal Desorption (ISTD). Together these combinations comprise a glove-fit design for sites with complex geologies (e.g., silty clay aquitards, and sandy or gravelly aquifers).
A combination of ISTD or ET-DSP™ and SEE often addresses the entire target treatment zone (TTZ). At each well location, either a single full-length TCH heating element or one or more ET-DSP™ electrodes is used along the depth interval of the low-permeability material, while steam is injected into wells screened in the permeable zones. Extraction wells exert hydraulic and pneumatic control.