Haliotis 2 extension work kicks off!
3 February 2025On your marks, get set! The work has just started!
The construction phase of the project to renovate and modernize the Nice Côte d’Azur Metropolitan Authority’s wastewater treatment plant, Haliotis 2, officially began on Monday November 4, and since January 6 the first major works have been underway!
A major milestone has just been reached!
The initial work involved the installation of a temporary disinfection system which, in addition to other modifications to the existing equipment, will enable half of the existing clarifiers to be isolated, while maintaining continuity of service at the plant. Once this part of the clarifiers has been demolished, it will be possible to launch construction of the future Haliotis2 water treatment line.
In parallel with this first major operation, excavation, soil treatment and foundation work for the final offshore discharge station have just begun at the start of 2025. Work on the “REUT” building will follow shortly.
On the sludge treatment part of the plant, demolition of part of the existing thickeners has begun to make way for construction of the new sludge treatment building, starting with the dewatering section.
As a reminder, with the start of this work, a genuine European “all-in-one” cluster of cutting-edge technologies for wastewater treatment and reclamation is being launched. A benchmark for the future, committed to the ecological transition through the treatment and reuse of wastewater from 26 municipalities in the Nice Côte d’Azur metropolitan area (representing 680,000 population equivalents), Haliotis 2 will produce up to 4 times more energy than the current plant consumes, while covering the City of Nice’s water needs for road cleaning and watering green spaces.