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3. Geological environments and their specific features
The feasibility study and sizing of in situ oxidation involve characterizing the site's hydrogeology and determining the nature, quantity and location of the contaminants present.
3.1 Geological data
Geological site characterization involves acquiring data on lithology and hydrogeology. This involves determining the hydraulic conductivity, permeability, texture and porosity of the environment, as well as groundwater flow direction and gradients. Preferential flows must also be investigated, to understand how pollutants and injected products can migrate.
Knowledge of the succession and distribution of different types of rock is important:
fine/coarse alluvium ;
...
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Unit operations. Chemical reaction engineering
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Geological environments and their specific features
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Bibliography
- ITRC - Technical and regulatory guidance for in situ chemical oxidation of contaminated soil and groundwater (Guide technique et réglementaire pour l'oxydation chimique in situ des sols et nappes contaminés). - 2 nd ed., ISCO-2, DC, Interstate Technology and Regulatory Council, in situ Chemical Oxidation...
Websites
Agence de l'Environnement et de la Maîtrise de l'Énergie, polluted sites and soils section http://www2.ademe.fr/
Agence de l'Environnement et de la Maîtrise de l'Énergie, polluted sites and soils/groundwater treatment techniques/chemical oxidation/examples
Events
International congress-exhibition on soils, sediments and water: Intersol, Paris every year at the end of March http://www.intersol.fr
Contaminated Site Management in Europe conference, held every year in a European city at the end of November http://www.redoxtech.com
...Standards
- Standard test method for estimating the permanganate natural oxidant demand of soil and aquifer solids - ASTM-D7262 - 2007
- Soil quality – services for polluted sites and soils Part 4: requirements for remediation services - NF X 31-620 - 2011
Regulations
There are no specific regulations governing soil and aquifer treatment techniques. The decree of 17/07/09 on measures to prevent or limit the introduction of pollutants into groundwater specifies that the introduction of certain substances into the environment is prohibited. These substances are listed in appendices 1 and 2. However, a paragraph specifies that :
"The provisions of article R. 212-9-1...
Directory
Companies
A number of companies in France use chemical oxidation treatment. Consult the Union des Professionnels de la Dépollution des Sites (Union of Site Remediation Professionals), the trade association for professionals in the polluted sites and soils sector. http://www.upds.org/
Organizations
French Environment and...
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