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Communication dans un congrès

Sustainable remediation strategies: multicriteria analysis to select and compare remediation techniques in a sustainability perspective

Abstract : The results presented here derive from the work conducted for the ongoing OXYSOL research project, funded by the French National Research Agency from 2008 to 2011. The OXYSOL project aims at developing a new association of in situ soil treatments for organic or inorganic persistent pollutants such as PAHs. The process focuses on superficial soils (first meters) and is based on a combination of In Situ Chemical Oxidation (ISCO) technology and soil functions restoration processes. It should allow the remediation of large brownfields areas, for which there is at the moment no real operational and economically acceptable technology available. During this project, we conduct a specific study on the acceptability and feasibility of this new remediation technique, integrating socio-economic criteria in a sustainability perspective. The objective is to identify all the parameters that have to be considered when choosing a remediation technology in order to assess its global performance and compare it to conventional technologies. This study is also focused on the gathering of information to facilitate communication and scientific and technical information dissemination on this new technology, in order to facilitate its acceptability. Finally, we also aim at modelling the costs of the new technology under several scenarios, to compare it to conventional technologies. The results obtained until now consist mainly in the development of a multicriteria analysis methodology to compare all the remediation technologies that could be used in a given pollution context, taking into account sustainability issues. These criteria are organized into two lists. The first one (selection criteria) gathers the criteria to be considered to select the remediation technologies that can be applied for the site of interest. The selection criteria are organized into categories of compatibility criteria dealing with space, time, environment and health issues, as well as constraints due to the future use of the site. The second one (ranking criteria) contains the criteria to be used to compare the selected technologies in order to prioritize them on the basis of their performance facing sustainability challenges. The ranking criteria are classified into three categories: criteria relating to global change control, those relating to human welfare and those relating to economic efficiency. The multicriteria method then enables us to calculate a final score for each remediation technology, taking into account if necessary a weighting procedure for the criteria, according to their relative importance in a given context. All these criteria were selected through a consultation process involving all the OXYSOL project partners. In 2010, this method will be tested through several case studies, based on examples provided by one of the OXYSOL project partners. These case studies will enable us to compare the results provided by the multicriteria analysis with the remediation strategies actually chosen and implemented. They will also provide an assessment of the applicability of the new ISCO / soil function restoration technology facing real site characteristics. Regarding the multicriteria analysis methodology developed, these case studies will help refine the selected criteria and test their applicability in real-life situations. Finally, the case studies will provide a basis for the analysis of the new technology costs, in comparison with the costs associated to more conventional remediation strategies.
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Contributeur : Anne-Lise Fevre-Gautier <>
Soumis le : mercredi 22 février 2012 - 12:44:09
Dernière modification le : vendredi 4 mars 2016 - 08:27:20
Archivage à long terme le : : jeudi 14 juin 2012 - 16:45:47

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Anne-Lise Fevre-Gautier, Stéfan Colombano, Alain Saada, Sandra Béranger, Corinne Merly. Sustainable remediation strategies: multicriteria analysis to select and compare remediation techniques in a sustainability perspective. ConSoil 2010 : 11th International UFZ- Deltares/TNO Conference on Management of Soil, Groundwater and Sediment, Sep 2010, Salzburg, Austria. 8 p. ⟨hal-00672946⟩

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