Purification and remediation
of polluted soil

We are happy to tell you more

Purification of polluted soil

The purification capacity of the equipment is 40 – 80 t/hr, according to the type of soil, content of the pollutants and water. For instance, treatment of 20,000 tons will take around two months. The impacts on the operation area and the environment are minimal and one-time-only.

Polluting chemicals suitable for thermal treatment

By adjusting the functions and burning temperatures of the process, almost all chemicals may be treated. Polluting chemicals suitable for thermal treatment are all organic pollutants e.g.: mineral oils, solvents, VOCs, chlorophenols, PAH compounds, PCDD/Fs and PCBs. Heavy metals became in the process insoluble oxides and therefore stabilized in the soil.

Polluted soil can reused and used for future use

The machinery does not pollute the surroundings or discharge harmful chemicals during the purification process in the environment. All chemicals are oxidized into CO2. Contaminated soils are cleaned for future use e.g.: soil contraction, road building, landscaping purposes.

The high treatment temperature +850 – 1100 ºC eliminates hazardous chemicals for good. No post-purification monitoring of harmful chemicals is required, and there is no risk of the problems reappearing in the future. This treatment frees the owner of the area from any possible liabilities in the future. Environmental problems are not merely relocated, and will not be burdens for future generations.


Thermal desorpion process
of polluted soil

Savaterra Greefix kaaviokuva

Suitable chemicals for thermal treatment

Emission Control: EU2010 level

Compound Concentration mg/m3
of combustion gas*
Total particles 10
Total organic carbon (TOC) 10
Hydrochloric acid (HCl) 10
Hydrofluoric acid (HF) 1
Sulphur dioxide (SO2) 50
Nitrogen oxides (NOx) 200
Carbon dioxide (CO2) not required
Carbon monoxide (CO) 50
Metals: Cd + Tl 0,05
Metals: Hg 0,05
Metals: Sb + As + Pb + Cr + Co+Cu+Mn+Ni+V 0,500
Dioxin/Furans (I-TEQ) 0,1 (ng/m3)

* Allowed by 2010/76/EY and 362/2003FI

What can you remediate?

Contaminant HTTD *
Semivolatiles Applies good
PAH Applies good
PCB Applies good
Pesticides/ herbicides Applies good
Volatiles (VOC) Applies good
Oil hydrocarbon Applies good (C5–C>100)
Chlorophenols (CPs) Applies good
PCDD/Fs Applies good
Syanides Applies good
Volatile metals (e.g. Hg) Applies good
Heavy metals Can be oxidized into
non-soluble form

* HTTD = High temperature thermal desoption

Fuel alternatives for TDU


Heavy oil, light oil


Recycled fuels