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Large-Scale In-Situ Thermal Desorption of Refinery Hydrocarbon Contamination at Gela Refinery, Italy

Up to 80,000 m³ of soils contaminated with hydrocarbons and mercury were treated through a multi-batch In-Situ Thermal Desorption program, demonstrating the effectiveness of ISTD for large-scale refinery remediation while achieving the cleanup objectives required by Italian regulations.

SITE DESCRIPTION

       Treated Volume

  80,000 m³ of contaminated soil

          Thermal technology

   In-Situ Treatment 

       Main contaminant

Hydrocarbons, mercury

        Site challenges

Treating soil depths ranging from 4.5–5 m to 12 m, managing large contaminated zone

        Project Timeline

2017 - 2022



SOLUTION

          Treatment Method

In-Situ treatment splited into 12 batches 

          Treatment program

 Installation of approximately 200 heating tubes per batch  

         Contaminated Vapors Management

Reburn 

       Process control

Continuous temperature monitoring into the soil throughout the treatment


RESULTS

✅         80,000 m³ of contaminated soil treated.

✅          Treatment results independently confirmed by ARPA

✅         Remediation objectives achieved in accordance with Italian                  regulations




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