Basic thermal remediation

ERH vs. TCH: How to Choose Your Thermal Remediation Technology (and Why)?

“How do I choose between ERH and TCH?”

It’s one of the most commonly asked questions when considering thermal remediation, and in this webinar one of the industry’s leading experts will answer it. Join TerraTherm, a Cascade Company’s Vice President John LaChance as he introduces the basic operational theory and concepts for both technologies. He’ll discuss their application to a set of typical site conditions (e.g., low and high permeability zones in unconsolidated and bedrock formations) and contaminants (e.g., CVOCs), and highlight typical design approaches, assumptions, and the pros and cons of each.

John will share real-life examples of full-scale projects involving electric resistance heating (ERH) and thermal conductive heating (TCH), including detailed breakdowns and comparisons of costs. He’ll also touch on ETDSPTM, a form of ERH that employs active injection and extraction of water. If you have burning questions about how ERH and TCH stack up, this is your chance to get them answered.

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Thermal 101: What Is Thermal Remediation And How Does It Work?

In the last 20 years, thermal remediation has gained a reputation as one of the most effective approaches for addressing sites with hard-to-treat constituents, everything from VOCs, SVOCs and PAHs to MGP coal tar and dioxins. But to achieve site goals, the project has to be well engineered, with a clear understanding of…

  • The geological setting
  • Which contaminants are being addressed and where they are in the subsurface
  • The estimated mass of constituents to be removed
  • Which heating technologies are best suited for the site
  • The timeframe available for the project
  • What the remedial objectives are, and more.

In this webinar, thermal experts Nikole Stone and Steffen Griepke will cover the basics of thermal remediation. They’ll explain how the three primary thermal technologies work, what constituents and lithologies they’re best suited to treat, typical project timeframes, and a few real-life examples. There will also be time for a Q&A, so be sure to bring all the questions about thermal remediation you’ve never had a chance to ask.

If you’re interested in gaining a basic understanding of thermal technology, this is a webinar you won’t want to miss.

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Introduction to ISTR – Part 1

In the last 20 years, thermal remediation has gained a reputation as one of the most effective approaches for addressing sites with hard-to-treat constituents; including everything from, VOCs, SVOCs and PAHs to MGP coal tar PCBs, dioxins and even PFAS. But to reliably and uniformly achieve site goals, the project has to be well engineered, with a clear understanding of…

  • The geological setting
  • Which contaminants are being addressed and where they are in the subsurface
  • The estimated mass of constituents to be removed
  • Which heating technologies are best suited for the site
  • The timeframe available for the project
  • What the remedial objectives are, and more.

In this first of two flash webinars, thermal experts Nikole Huard and Steffen Griepke will cover the basics of thermal remediation. They’ll explain the key removal mechanisms and how the three primary thermal technologies work and what constituents and lithologies they’re best suited to treat as well as the essential site information required to evaluate whether thermal remediation is a good fit and typical project timeframes.

There will be time for Q&A after each webinar, so be sure to bring all the questions about thermal remediation you’ve never had a chance to ask.

If you’re interested in gaining a basic understanding of thermal technology, this two-part webinar series is one you won’t want to miss.

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Introduction to ISTR – Part 2

In the last 20 years, thermal remediation has gained a reputation as one of the most effective approaches for addressing sites with hard-to-treat constituents; including everything from, VOCs, SVOCs and PAHs to MGP coal tar PCBs, dioxins and even PFAS. But to reliably and uniformly achieve site goals, the project has to be well engineered, with a clear understanding of…

  • The geological setting
  • Which contaminants are being addressed and where they are in the subsurface
  • The estimated mass of constituents to be removed
  • Which heating technologies are best suited for the site
  • The timeframe available for the project
  • What the remedial objectives are, and more.

In this second flash webinar of the series, Nikole Huard and Steffen Griepke will cover how to select the best technology for your site and remedial goals and provide a few real-life examples.

There will be time for Q&A after each webinar, so be sure to bring all the questions about thermal remediation you’ve never had a chance to ask.

If you’re interested in gaining a basic understanding of thermal technology, this two-part webinar series is one you won’t want to miss.

Watch Webinar

ERH And TCH – How To Choose

It’s one of the most commonly asked questions when considering thermal remediation, and in this webinar one of the industry’s leading experts will answer it. Join TerraTherm, a Cascade Company’s Vice President John LaChance as he introduces the basic operational theory and concepts for both technologies. He’ll discuss their application to a set of typical site conditions (e.g., low and high permeability zones in unconsolidated and bedrock formations) and contaminants (e.g., CVOCs), and highlight typical design approaches, assumptions, and the pros and cons of each.

John will share real-life examples of full-scale projects involving electric resistance heating (ERH) and thermal conductive heating (TCH), including detailed breakdowns and comparisons of costs. He’ll also touch on ETDSPTM, a form of ERH that employs active injection and extraction of water. If you have burning questions about how ERH and TCH stack up, this is your chance to get them answered.

Watch Webinar

ISTR Challenges Part 1: Thermal Conductive Heating

In Situ Thermal Remediation (ISTR) is a widely used approach for treating highly contaminated source zones (e.g., DNAPL and LNAPL) at hazardous waste sites because of its reliability and effectiveness at removing a wide range of chemicals from a variety of geologic settings.  As experienced consultants know, large scale remediation projects come with unique challenges.

Vice President of Development, John LaChance, and Senior Technologist, Erin Hauber, are here to share some of the lessons learned from implementing thermal conductive heating (TCH) at more than 80 sites including:

  • unexpected COCs and increased mass
  • higher groundwater flux than expected
  • materials selection for sites with highly corrosive COCs
  • how to handle highly flammable COCs in the vapor treatment system
  • mitigating vapor intrusion issues that may arise during treatment

Join the discussion for insight to help avoid costly project delays in your next thermal project.  There will be time for questions at the end, so bring the thermal remediation questions you’ve never had a chance to ask.

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ISTR Challenges Part 2: Electrical Resistance Heating and Steam Enhanced Extraction

Thermal Conduction Heating (TCH), Electrical Resistance Heating (ERH) and Steam Enhanced Extraction (SEE) are widely used thermal technologies capable of effectively remediating a variety of chemicals in various varying subsurface settings, yet sometimes operations do not perform as planned.  An experienced thermal remediation contractor can help you anticipate and address site-specific challenges during full-scale thermal projects.

Presented by Vice President of Development, John LaChance and Vice President of Technology, Steffen Griepke, ISTR Challenges Part 2 covers some of the common issues that can arise at ERH and SEE sites, and discuss how they should be addressed.  You’ll hear about scenarios involving

  • significantly different soil electrical resistivities than planned
  • slower than expected heat-up
  • stray voltages and currents
  • poor steam quality
  • higher than expected mass removal rates
  • lack of hydraulic control
  • non-uniform steam delivery and heating

Join the discussion for insight to help avoid costly project delays in your next thermal project.

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