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ArcelorMittal – Contaminated water treatment plant

Building owner

ArcelorMittal Luxembourg / ArcelorMittal Dommeldange



Between the years of 1969 and 1989, the company CASA operated a process to produce ferroalloy compounds while also operating an industrial landfill located on property in the ownership of AcelorMittal Dommeldange.

ArcelorMittal then decided to build a station to treat the infiltration water coming from the CASA landfill. During a feasibility study carried out by Paul Wurth Geprolux in 2008, it was determined that the process of chemical precipitation was the most suitable process for this application. The produced waste is a dehydrated sludge which, in comparison with other processes, will be stored and easily disposed of.

Key figures

Quantity of infiltration water

2.500 m3/a


Cr, Mo, V

Foreseen start of siteworks

End 2011

Our missions

  • Feasibility study with the aim to select the most suitable treatment process
  • Basic engineering
  • Request for Authorizations regarding “Etablissements Classés”

Design team

Design team

Paul Wurth Geprolux

To discover

Confident with complexity.

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