Treatment of hazardous waste

SUEZ ENVIRONNEMENT treats hazardous waste stemming from industrial activities and hospitals. Once collected, the waste is analysed, sorted by categories, then grouped together by competent chemists in order to be sent to the most appropriate treatment facility.

Treating hazardous waste under the best conditions

With the expertise of its subsidiaries, SUEZ ENVIRONNEMENT uses specific techniques to recycle or dispose of hazardous waste. For example, SITA offers its customers two main solutions:

    • the stabilisation and storage of the waste in dedicated facilities,
    • incineration in specific industrial facilities to recover energy from liquid and solid wastes containing organic pollutants or residues presenting a risk of contamination.

In order to improve the treatment of hazardous waste and its transformation into energy, SUEZ ENVIRONNEMENT implements an ambitious innovation policy. SITA France has thus developed an offering which covers the management of toxic waste in dispersed quantities (TWDQ).

Moreover, in France, the hazardous waste treatment facility of SCORI Lillebonne in Seine‑Maritime treats 100,000 metric tonnes of waste per year, half of which through high-performance physico-chemical processes. Once prepared, the waste is sent to cement plants as an alternative to fossil fuels. SUEZ ENVIRONNEMENT also has 5 hazardous waste regeneration centres in France, Belgium and the Netherlands, which promote the transformation of chlorine into hydrochloric acid and sulphur into sulphuric acid.

Key figures

    • 141 hazardous waste facilities
    • 9 hazardous waste incineration units
    • Over 4 metric tonnes of  hazardous waste treated in 2012
    • Close to 1 metric tonne of soil decontaminated in 2010

Developing leading-edge expertise worldwide

SUEZ ENVIRONNEMENT provides hazardous waste treatment expertise in France and globally. The Group has won a contract from one of the biggest chemical and industrial sites in Asia – the petrochemical plant of Shanghai, China – to manage a hazardous-waste incineration facility. This plant can treat up to 60,000 metric tonnes of waste per year.

Moreover, SITA has been chosen, in consortium with 2 other companies, for the decontamination and conversion of the former chemical site of Chesterfield in the UK. For this purpose, SITA uses an advanced process called “thermal desorption” to treat the heavily polluted soils.

SITA is also involved in the physico-chemical treatment of hazardous waste in France, the Czech Republic, Spain, Belgium, Luxembourg and the Netherlands. In those countries, the subsidiary uses several technologies, such as emulsion splitting1, redox2 and centrifugation3, which contribute to the processing of hundreds of thousands of metric tonnes of waste per year.

1 This process destabilises the emulsion, making it possible to separate the water phase from the oil phase in a cold blend.

 2 Chemical process combining reduction and oxidation

 3 Process applied mainly to organic waste, enabling the separation of water from hydrocarbons in certain water-in-oil emulsions