Our references

Séché Environnement performs waste management all over the globe. For further information on our references, kindly contact our sales department using our contact form.

Industrial example: Rehabilitation and disposal of industrial waste

Cleanup of the historical waste stocks generated by the company’s industrial activities.

Type of pollution

Contamination of land with a mix of metallic pollutants: cadmium, arsenic, lead, etc.

Technical solution used

Creation of a dedicated internal storage area (hazardous waste storage classification – ISDD Class 1 – disposal of hazardous waste) with stabilisation pre-treatment

Services

  • Upstream performance of administrative procedures: diagnosis, creation of administrative files, feasibility studies, consultation and research, obtaining of the necessary administrative authorisations
  • Building of dedicated storage areas based on Séché’s sealing standards
  • Deployment of environmental surveillance networks (air, water)
  • Construction of stabilisation pre-treatment plant: mobile unit
  • Earthworks for the excavation of polluted land
  • Implementation of specific conveyor systems (3 km) to bring polluted soil to the pre-treatment and storage units
  • Installation of a laboratory for environmental monitoring of the site and monitoring of treatment quality
  • Rehabilitation of cleaned-up areas

Key figures of the project

Duration of upstream phase (administrative): 3 years

Duration of the project: 6 years

1 million cubic metres of land treated

35 jobs created

Emergency intervention: Management of waste generated by the Probo Koala – Ivory Coast

19 August 2006: spillage of liquid waste with high hydrocarbon and soda content in the Ivory Coast – 17 sites impacted.
Significant release of H2S leading to 17 deaths.
Intervention by the UN and WHO to begin cleanup.15 September 2006: Ivory Coast and Tredi signed a contract for the cleanup of the impacted sites and the treatment of waste.

Treatment solution

Excavation and pumping of waste, packaging and transfer for destruction to the Tredi Salaise (Isère – France) facility.

Creation of two direct services (solid and liquid) at the Salaise facility to treat the waste without prior unpacking.

Services performed

  • Sampling and analysis
  • Security management: training of teams, implementation of procedures
  • Excavation and pumping
  • Packaging of effluent in iso-containers
  • Packaging of contaminated soil in big bags and 200 litre casks
  • Administration: submission of request to import waste (Basel Convention) – total authorised capacity: 10,500 tonnes of waste
  • Transport management: roll-out of a multi-mode solution (boat, transport to the port of the Salaise Industrial Zone)
  • Destruction of the waste: direct service

Key figures

Human resources: 40 people

Technical resources:

1,000 tonnes of material transported at the impacted areass

560 containers of polluted soil

54 iso-containers of contaminated effluent

Duration of the intervention: 4 months

Destruction of obsolete pesticides (POPs) – Morocco

Implementation of the FAO-steered international programme for the elimination of obsolete pesticides (Stockholm Convention)

Type of waste

Obsolete pesticides

Treatment solution

Destruction at the Tredi Salaise (Isère – France) facility

Services performed

  • Sampling and analysis
  • Security management: training of teams, implementation of procedures
  • On-site packaging
  • Administration: submission of request to import waste (Basel Convention)
  • Transport management: roll-out of a multi-mode solution (maritime and road transport)
  • Onsite treatment: direct service (without having to unpack the waste before destruction.

Destruction of PCB transformers – Total Gabon

Security, packaging, transport and destruction of contaminated PCB transformers

Treatment solution

Destruction at the Tredi St Vulbas facility (Ain – France)

Services performed

  • Sampling and analysis
  • Security management: training of teams, implementation of procedures
  • On-site packaging
  • Administration: submission of request to import waste (Basel Convention)
  • Transport management
  • Treatment at the Trédi St Vulbas facility

Key figure

Tonnage treated: 100 tonnes

Rehabilitation and disposal of household waste, La Gabarre – Guadeloupe

Rehabilitation and environmental security of the historical domestic waste landfill, initiated by Guadeloupe’s Sictom (now Syvade) with a view to permanent closure.

Project supported by the State and the European Union.

Type of pollution

Organic

Related impact

Significant deterioration in the mangrove located close to the site and proven impact on the Rivière Salée.

Services performed

  • Remodelling of the historical waste mass to facilitate its stability and allow rainwater to flow towards the recovery networks
  • Implementation of a sealing mechanism (geomembranes) in the remodelled zones to optimise the recovery of biogas and prevent rainwater from entering
  • Creation of ring dykes to isolate the storage areas from the external environment
  • Implementation of collection networks and rainwater storage ponds to allow surveillance before release to the external environment
  • Deployment of lixiviate management systems (liquid effluent collected in the waste storage areas):
    • implementation of drains and pumping around the rehabilitated areas to prevent dispersion into the natural environment (lake and maritime areas)
    • installation of an onsite lixiviate treatment system (MBR, membrane bio-reactor)
  • Roll-out of biogas management and treatment systems:
    • wells and drainage systems within waste storage areas
    • overhead collection network
    • flare-type fire (destruction of biogas by burning)
  • Integration of the site into the landscape and implementation of a specific rehabilitation programme covering 23 hectares (selection of local species, continuation of mangrove)
  • Environmental monitoring of the site and surrounding area
  • Security of the site

Key figures

Duration of the project: 3 years (completed in December 2013)

Surface area: 36 hectares

Volume of waste secured: 5 million cubic metres

Services designed and performed under the responsibility of Séché Environnement but carried out largely (nearly 70%) by local companies

Number of jobs: 20

Destruction of phytosanitary product stocks – Ukraine

Implementation of the UN-steered international programme for the elimination of persistent organic pollutants in Ukraine.

Type of waste

Pesticides that are prohibited from use or sale

Treatment solution

Destruction at the Tredi Salaise facility
(Isère – France)

Services performed

  • Sampling and analysis
  • Security management: training of teams, implementation of procedures
  • On-site packaging: transfer of 40 kg sacks in plastic linings enclosed in big bags
  • Administration: submission of request to import waste (Basel Convention) – total authorised capacity: 10,000 tonnes of waste
  • Transport management: roll-out of a multi-mode solution (maritime/rail/road)
  • Onsite treatment: direct service (without having to unpack the waste before destruction)

Key figures

Human resources: 21 people

Tonnage authorised for treatment: 10,000 tonnes

Duration of the project: 4 months

Deconstruction and remediation of inorganic chemicals factory

Deconstruction and remediation of a titanium dioxide manufacturing facility on two sites totaling 32 hectares

Type of pollution

Chemical pollution. Aggravated natural radioactivity.

Related impact

Soil pollution. Significant scale deposits from the manufacturing process arising from the treatment of ilmenite, a mineral containing a certain amount of natural radioactivity related to the presence of thorium and uranium.

Services performed

  • Deconstruction and demolition of two sites: one manufacturing site and one effluent treatment plant
  • Depollution of polluted soils
  • Disconnection of tanks and other equipment in areas designated as natural reserves
  • Lifting of tanks
  • Creation and operation of a radiological purification facility equipped with ventilation and air treatment systems
  • Operations carried out with fresh or filtered air (quality-checked using dosimeters)
  • Removal and mechanical sorting of radioactive waste
  • Taking of samples for radiological analysis
  • Cutting out and packing of radiological waste
  • Management of FNR waste
  • Constitution of homogeneous batches appropriate to the waste treatment channels used
  • Traceability of waste resulting from the purification process
  • Updating of register of waste products and management of waste storage areas
  • Organization of transportation
  • Management and treatment of effluents.

Key figures

Duration of the project: 3 years (ending June 2014)
Area: 32 hectares
Volume of concrete treated (deconstruction): 100,000 tonnes
Production tanks purified and packed: 166
Pipelines capped and packed: 16 kilometers
Human resources: average headcount on site 32 people (with co-contractor), including 8 jobs created locally for the duration of the project

Overall sales value of project: EUR 13 million