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R&d Project

Groundwater management

Hazardous waste handling

Landfill and soil remediation


Remediating soil contamination with in situ alkaline hydrolysis

22. February 2012

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The NorthPestClean project, a large scale pilot experiment using in situ alkaline hydrolysis, was conducted in 2010-2014. The project was supported by LIFE+, a program of the European Union.

The projects primary objectives were:

  • Document the effectiveness of the new method and provide a political decision base for a full scale remediation at Groyne 42.
  • Demonstrate the effect and usability of three different “contact enhancement” technologies (vibration, recirculation and surfactant addition).
  • Provide stop criteria / success criteria for a future full scale remediation – How much of the contamination has to be removed to eliminate the risk for the North Sea and environment?

The project NorthPestClean has shown that it is possible to remediate soil contaminations with pesticides by using in situ alkaline hydrolysis. The results showed as well that the duration of the remediation will depend on the type and amount of chemicals in a given contamination.

The NorthPestClean project has successfully contributed to the development of the alkaline hydrolysis method and has paved the way for the future use of the method in both Europe and also in the rest of the world.