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In Nice, Suez is launching its mega construction site for a wastewater treatment plant to treat wastewater and produce energy


The French multinational, which won the call for tenders against Veolia, is starting the Haliotis 2 site, a future multi-purpose wastewater treatment plant for the Nice metropolis. The cost of the works until 2030 is estimated at 700 million euros.

Le Figaro Nice

The name sounds like a movie that did well the first time.

With "Haliotis 2", the metropolis of Nice Côte d'Azur and Suez aim, by 2030, to bring out a new wastewater treatment plant from one end of the Nice coast.

And they hope to find success and usefulness specific to this period, marked by drought and concerns around blue gold.

At the time of Jacques Médecin, the former city councilor of Nice, Haliotis met the need for a water treatment center for around twenty municipalities in the Riviera metropolis.

It was 50 years ago.

With its version 2.0, nearly 680,000 inhabitants in 26 municipalities will be supplied, up to the Monaco border.

Thursday, Christian Estrosi and Sabrina Soussan, the general manager of Suez, launched the start of substantial work.

The French multinational won the tender against its main competitor, Veolia, to embark on a project worth nearly 700 million euros.

“The competition was extreme and fierce

, emphasized the mayor and president of the metropolis.

Two jewels of French industry fought.

The site, in three phases, will be complex

"but Suez has the capacity to manage this, because it is also its core business"

, recalled its director.

The latter detailed the objectives of this future station, which is intended to be versatile.

Beyond treating wastewater, Sabrina Soussan promises that Haliotis 2 will produce

"four times more energy than it consumes"


Read alsoWhat France can expect from the reuse of wastewater

Biomethanization of sludge

This results in the biomethanization of sludge from wastewater treatment to create gas that can be used in nearly 11,000 Maralpine homes.

Heat recovery is also considered.

This will materialize in the second phase of the works (2029), the first remaining the treatment of wastewater for reuse (Reut).

In 2028, the metropolis plans to water its gardens and roads with water from this station.

Suez already praises the quality of this water thanks to a series of treatment operations going as far as the micropollutant.

90% will be removed, the company says, through a series of filters.

“For this, we will use digital solutions, with the help of artificial intelligence, to manage the various works.

This will help to better manage intense rain phenomena”

, decrypts Sabrina Soussan.

Nearly 5 million m3 of water will be treated in Haliotis 2,

“i.e. 2000 Olympic swimming pools”

, adds the director.

An increase in the price of water to the tune of 11% from this summer is mentioned.

"It will be very progressive and over a short period"

, wanted to qualify Christian Estrosi.

During the works, Haliotis will continue to operate to the west of the city, right next to the airport.

The company wanted to reassure local residents about the work that will be undertaken in the coming years.

Sound measurements will be carried out regularly, she assures.

A time pointed out for the bad smells engendered by Haliotis in the surrounding districts (Arenas, Fabron, Carras), Sabrina Soussan insisted on specifying that 28 rounds of deodorization will be carried out as part of the extension and modernization of this station. purification.

This will be largely camouflaged by vegetation and buried underground.

Around Haliotis 2, expectations are high in a context of drought and where the reuse of treated wastewater is at the heart of the government's water plan.

It has set reuse at 10% by 2030. With this project in Nice, the objective could be reached two years earlier.

The project will be largely financed by the metropolis thanks to loans from the EIB and the regional bank and 15% will be covered thanks to aid from the water agency.

What will eventually cause an increase in user bills?

“It is not only linked to Haliotis 2, but also to solidarity between the municipalities”

, specifies the metropolis.

An increase of 11% from this summer is mentioned.

“It will be very gradual and over a short period of time”


Source: lefigaro

All news articles on 2023-04-21

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