| Client : | EdS Ostrava (SITA) for the Czech National Property Fund |
| Contact : | Michael STRAKA |
| Location : | Ostrava - Karolina (Czech Republic) |
| Project : | Thermal desorption of 450,000 tons of tar contaminated soil by means of thermal desorption |
| Duration : | May 1999 to March 2001 |
| Budget : | > 5,000,000 € (prime & sub-contractors) |
The clean-up site is known as 'Karolina' and is located downtown Ostrava. It was a former gaswork site, part of a major steel factory. The clean-up project was funded by the Czech National Property Fund. Excavation and pre-treatment took place on the 'Karolina' location, and contaminated soil to be treated thermally was transported to a specific location, approx. 2km from Karolina, where the thermal unit was set-up.
Soil to treat and clean-up objectives :
The soil to treat was mainly heavy clay (80% < 63µ) and was found to be very wet (due to heavy rainfall during the first half of the project period). The contamination levels varied from 2,000 up to 20,000 ppm in total PAH. Clean-up levels were set at 2 ppm total PAH.
Equipement:
The project started with a DRAGON 15 unit until May 2001. Early May, a second unit, DRAGON 35, was added to finish the project on time. Stack tests were performed on both units on site. Both units were equipped with continuous emissions monitoring.
