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Emergency LNAPL Recovery of Diesel Contamination in Flawinne, Belgium

A diesel spill caused by a damaged fuel transfer pipe resulted in a free-phase hydrocarbon plume migrating toward a nearby canal. An emergency LNAPL recovery system successfully recovered 6 m³ of diesel over 8 months while preventing further off-site migration.

SITE DESCRIPTION

       Treated Volume

6 m³ of recovered diesel

          Thermal technology

LNAPL Skimming (Non-Thermal Technology)

       Main contaminant

Diesel (LNAPL)

        Site challenges

Free-phase diesel migration toward a nearby canal; fluctuating groundwater table; emergency response required

        Project Timeline

8 months



SOLUTION

          Treatment Method

Emergency LNAPL recovery using DS 500-12 pumping unit, recovery wells and skimmers  

          Treatment program

Installation of 6 recovery wells, 6 excavations (4.5 m deep), floating boom and SKIMMER 600 units, followed by controlled groundwater drawdown  

         Contaminated Vapors                          Management

Not applicable

       Process control

Continuous recovery monitoring with progressive groundwater drawdown to prevent migration toward the canal


RESULTS

✅          6 m³ of pure diesel recovered during the project

✅           Approximately 90% of the product recovered within the first                  4 months

✅          Off-site migration toward the canal successfully controlled                   and contained



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