Since July 2002 a pump & treat remedial action has been in operation for the extraction of Uranium- and “CHC-compounds” contaminated ground-water flowing below an industrial area used before as production site for nuclear fuel elements. So far about 17 kg Uranium and 22 kg CHC-compounds have been eliminated. As described earlier  two ground-water plumes have transported the Uranium downstream to locations where two main remediation wells are placed. They show characteristic differences with respect to their Uranium-nuclide vector. More than 220.000 m3 ground-water of the whole 350.000 m3 have been pumped therefrom. Preferred ground-water paths cause blending the two plumes’ waters. The first plume’s water characterized by decreasing Uranium-235 ratios is meanwhile dominated by the second plume’s water of up to 85% in case of well W10. The overall activity of 122 MBq Uranium-235 has been extracted from the saturated zone with decreasing quantities. Only a small area remains where the first plume’s pure ground water will be extracted in future. Both target values of 20 μg/l and 10 μg/l for dissolved Uranium and CHC-compounds, respectively, could not yet be reached for all remediation wells. In accordance to the 10μSv-concept of radiation protection the improvement of specific parameters will still be necessary in order to release the complete site from the German Atomic Law.
- Nuclear Engineering Division and Environmental Engineering Division
Remediation of Uranium- and CHC-Contaminated Groundwater on a Former Nuclear Fuel-Element Production Site
Wo¨rner, J, & Margraf, S. "Remediation of Uranium- and CHC-Contaminated Groundwater on a Former Nuclear Fuel-Element Production Site." Proceedings of the ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2. Liverpool, UK. October 11–15, 2009. pp. 595-602. ASME. https://doi.org/10.1115/ICEM2009-16244
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