Soil is one of the earth’s most precious resources. It is a basic, yet crucial, element that sustains life. Ideal soil conditions bring about benefits across multiple aspects of life, such as food, drinking water, ecology, environmental health and climate change.
According to Teresa Anderson, Climate Policy Coordinator at ActionAid International, promoting forestry development is the most effective way to preserve and rehabilitate ecosystems. Focus should also be on protecting soil against contamination and on guaranteeing the availability of fertile land, which supports planting and growth of wild plants.
The sustainable qualities of soil resources make them a valuable contributor to the economy, and crucial to efforts to preserve and ameliorate the ecosystem. Both public health and biodiversity can be maintained by preventing soil and groundwater pollution. The reintroduction of polluted soil and enhancement of site condition is closely connected to our living standards. For instance, without proper landfill restoration, the landfill sites would be left bordered by desolation, which would be a tremendous waste of land resources. Protecting soil against pollution and restoring land for planting can help us gradually achieve sustainability.
As stated in the Report on the National General Survey of Soil Contamination, mining and industrial wastelands are among the regions with the most heavily polluted soil throughout China. Analysis of the distribution of soil pollution reveals the severity of soil pollution at the Yangtze River Delta, the Pearl River Delta and the Old Industrial Base in Northeast China. Moreover, excessive heavy metal content in soil from Southwest China has indicated that soil pollution in China is so severe that human life, food safety and agricultural sustainability are under threat.
SUEZ's experience with soil remediation dates back more than 40 years. We offer our expertise to provide comprehensive services to industries and local governments, so they can reinstate contaminated land for reuse and develop new lands. Our remediation solutions include site evaluation, environmental consultation, feasibility studies and thorough laboratory tests. To remediate industrial areas, we have cooperated with corporations like Total, Rubis, EDF, Areva, Exxon Mobil, BP and ENI.
Today, SUEZ undertakes 500 global soil remediation projects a year, has remediated 2,000,000 tons of soil and worked in over 100 countries.
Globally, SUEZ is dedicated to conducting thorough environmental pollution analyses for various pollution categories and sites. We are also committed to designing the most suitable remediation treatments for customers. Our expertise covers site evaluations, treatment design, in-situ and groundwater remediations, as well as on-site and off-site remediations. SUEZ also has advanced logistics and supply chain capabilities, favoring soil remediation process management. It guarantees environmental preservation, which is the core of soil remediation, environmental rehabilitation and decontamination of sites.
In Asia, we offer local customers diverse services, including environmental consultation and remediation treatment implementation. For environmental consultation, our expertise covers environmental investigations and risk assessment, remediation project design and environment monitoring. For remediation treatment implementation, we provide comprehensive soil and groundwater remediations, landfill remediation, landfill rehabilitation, treatment and resource utilisation of industrial solid waste (oil sludge), mine restoration and remediation, water-sediment remediation and comprehensive management of water environment in the river basin. SUEZ combines factors like hydrogeology, physical and chemical characteristics of pollutants and site conditions with its profound experience to enhance its technological know-how and accomplish remediation treatment implementation and resource utilisation.
SUEZ’s expertise in soil remediation covers numerous treatment solutions for complex geological problems.
In-Situ and Groundwater Remediations
In-situ remediation is a technique performed directly on the pollution site without transferring the contaminated soil. With enough time, in-situ remediation can preserve environments against damage and boost economies.
- SUEZ has implemented in-situ remediation treatment solutions in a Belgian industrial site, as well as in the former site of a Shanghai gold pen factory. Through techniques like triple extraction and advanced oxidation-reduction, we perform successful soil and groundwater remediations.
Ex-situ techniques involve excavation of soil at the contamination site and are more efficient than in-situ remediation. Ex-situ remediation can further be divided into on-site and off-site remediations. On-site remediation means the soil is treated on-site by various methods after excavation. Such strategies include biological treatment, washing, thermal desorption and stabilisation/solidification. Thermal desorption, soil washing and biological treatment are among the most commonly adopted rehabilitation techniques by SUEZ.
- SUEZ’s intervention in one of the largest industrial development zones in the United Kingdom, the Avenue coking works, was symbolistic as SUEZ treated and restored 98 hectares of polluted soil in coal mines and chemical manufacturing sites.
Off-site remediation, a sustainable treatment technique, is a branch of ex-situ remediation; it includes soil excavation and the following services: making cell-by-cell analysis of excavated soil, providing temporary storage (if requested), identifying the best treatment method, managing and optimising logistics and providing complete traceability.
- SUEZ has rehabilitated a French forge using off-site remediation. We finished dismantling industrial buildings, depolluted 50 hectares of land, and turned it into a platform for transferring, processing, and recycling polluted soil and sediments. We also adopted optimal treatment methods to manage and optimise logistics, as well as to complete the traceability of rehabilitated soil.