Tag Archives: Electro-Thermal Dynamic Stripping Process™

Webinar: Thermal Remediation of LNAPL

In case you missed our last installment of “Inside In Situ Thermal Remediation”, TerraTherm’s new informational webinar series, you can find a recorded version here: The focus of this presentation was to provide an overview of thermal treatment options for LNAPL-contaminated sites, and will cover: Thermal remediation progress over the last 10 years, Similarities between In Situ Thermal Remediation (ISTR) and thermally enhanced oil recovery, LNAPL remediation case studies, and A large LNAPL spill case – using the energy in the recovered fuel to power remediation and obtain sustainable clean-up. TerraTherm uses all three main thermal technologies: Steam Enhanced Extraction, … Continue reading

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Which Thermal Technology is Right for your Site?

So you’ve done your homework and feel that thermal may be a good fit for your site.  Now it’s time to determine the thermal technology or combination of technologies that will best accomplish cleanup goals.  There are three predominant thermal technologies in the industry:  Steam enhanced extraction (SEE); resistive heating in the form of electrical resistive heating (ERH); and thermal conduction heating (TCH), which combined with vacuum extraction is known as in-situ thermal desorption (ISTD).  When selecting a thermal technology the following key items need to be understood: Boiling points, vapor pressures, and water solubility of the contaminants: For volatile … Continue reading

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Where Did In Situ Thermal Remediation (ISTR) Methods Come From?

Looking at a built-up thermal site with heaters, wells, manifold piping, process gear, and the advanced monitoring systems which can be accessed from anywhere in the world, it can be tempting to wonder how this all came about…  Hundreds of engineering details, program logic controlling automatic operation of valves, heating systems, and treatment equipment.  Yet, the systems run overnight and on weekends, with nobody there to baby-sit them.   Most of the features of a modern In Situ Thermal Remediation (ISTR) site have evolved over a period of less than 25 years.  I will try to explain the evolution here. Chemicals … Continue reading

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