###  Technical principle:

  

- As soil is heated, volatile contaminants in the soil are vaporized or destroyed by a number of mechanisms, including:  
     (1) evaporation into the subsurface air stream introduced by application of vacuum, (2) steam distillation into the water vapor stream, (3) boiling, (4) oxidation, and (5) pyrolysis
- Depending on the depth of treatment, an array of either thermal blankets or vacuum/heater wells are used;
- Produced vapors are treated with an air pollution control system to remove residual contaminants that have not been destroyed in situ.



 

 

 

 



 

 





###  Technical advantages:

  

- Achieves high clean-up standards
- Fast remediation – 99% removal in 3-6 months;
- Wide range of target compounds, soil and underground water can be treated at the same time;
- Applicable beneath buildings.



 

 

 

 



 

 





###  Applicable contaminated sites:

  

- Applicable for sites which cannot be excavated;
- Organic contaminated sites such as petrochemical industry, underground tank farm, lumber mills and pesticides warehouse, and etc.



 

 

 

 



 

 





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