SITE DESCRIPTION
Treated Volume |
26,000 m³
|
Thermal technology |
In-Situ Thermal Treatment (ISTT) |
Main contaminant | PCE/TCE, Vinyl chloride, cis-DCE |
| Site challenges |
The project involved the treatment of a large volume of soil and groundwater contaminated with high concentrations of chlorinated solvents at depths ranging from 1.5 to 15 metres below ground level. The remediation also had to achieve strict cleanup targets while preparing the former industrial site for future redevelopment as offices.
|
Project Timeline | January 2024 – March 2026 |
SOLUTION
Treatment Method |
In-Situ Thermal Treatment |
Treatment program | The treatment system included 272 natural-gas-powered remote-flame Smart Burners, installed approximately 3.5 metres apart across the thermal treatment zone. |
Contaminated Vapors Management | Extracted vapours were routed to a dedicated Vapor Treatment Unit incorporating three cooling stages. Condensable compounds were collected, while non-condensable gases were treated using activated carbon before discharge. Contaminated groundwater and condensates generated by the vapour treatment system were transferred to a dedicated Condensate Treatment Unit. |
Process control | A network of 55 thermocouples monitored soil temperatures at one-metre depth intervals throughout the treatment area. |
RESULTS
✅ Approximately 26,068 m³, corresponding to 51,540 tonnes, were included within the thermal treatment zone. |
✅ The heating phase was completed after 268 days, from November 2024 to July 2025. |
✅ The target temperature of 90°C was already achieved in many parts of the treatment zone by March 2025. |
