TRS Group, a 100% employee-owned company with joint ventures in Brazil, China and Europe, is the leading provider of thermal remediation technologies for the in situ treatment of soils, groundwater and bedrock and the ex situ treatment of soil piles and dredged sediment. We excel at the quick cleaning of contaminated sites, often guaranteeing results, putting them back into productive reuse. Our focus is on reducing the costs of thermal remediation for the benefit of our clients, employees, shareholders and the general public. Our people are customer-focused and passionate about their work. Visit : https://www.thermalrs.com/
How?
Thermal conduction heating (TCH) uses heaters, typically powered by electricity, to distribute heat
throughout the treatment zone. Through simple thermal conduction, heat propagates radially away
from heater wells, raising the temperature of the target volume. We space the heaters in a triangular
pattern for optimal heat distribution. The heat fronts from each heater well will meet over the course of
the remediation with thermal diffusivity limiting the rate of heat propagation. The tighter the heater
spacing, the faster a site will heat up. Typically, we design our systems to reach boiling temperatures in
two to four months.
We extract vapors from separate vacuum wells or from co-located extraction screens next to heaters.
Principle of TCH – red columns are TCH heaters; blue are extraction wells.
Which contaminants of concern (COCs)?
We routinely use TCH to treat TCE, PCE and other volatile organic compounds (VOCs) by volatilization
at temperatures from 70 to 100oC. By removing the pore water, TCH can achieve higher temperatures
than the boiling point of water, which is advantageous for the volatilization of semi-volatile organic
compounds (SVOCs), such as PFAS, PCBs, dioxins, and PAHs. Further, we can treat excavated soils or
dredged sediments in above-grade piles.