Beggen: water treatment plant

Objectives of the City of Luxembourg

The Beggen treatment plant collects wastewater from Luxembourg City and the municipalities of Strassen, Bertrange and Leudelange, the locality of Roedgen, and the area to the west of the airport. As all of these are high-growth areas, in terms both of the number of residents and the volume of economic activity, the Beggen water treatment plant has reached its maximum capacity of 210,000 population equivalen.t
The capacity of the plant will be upgraded to satisfy a requirement of 450,000 population equivalent by 2047.

The project

As the plant’s operation cannot be suspended and all standards must be adhered to at all times, the plant will remain operational while the extension works are carried out.

These works include the addition of a new primary sedimentation stage, with four parallel channels, downstream of the existing mechanical treatment stage. After this stage of the treatment process, the City of Luxembourg has opted to add a biological treatment, using sequencing batch reactor (SBR) technology, which is both highly effective and compact. This will be followed by a fourth decontamination stage in which the water is treated using ozone and granular activated carbon. This technique has been tried and tested, especially in purifying drinking water from natural springs.

On account of the growth of the municipalities in the plant's catchment area, initial construction work – referred to as the "DELTA extension" phase – will be needed to ease pressure on the existing biological treatment facility. The reason for partially extending the biological treatment stage is to relieve pressure on the existing installations until the extension works are completed, ensuring the plant can continue to meet all currently applicable legal standards until 2030.

Updated every hour.

February 2025 works

March 2025 works

Travaux d'avril 2025

Travaux de mai 2025