Water, Air, and Soil Pollution

, Volume 49, Issue 1–2, pp 139–158 | Cite as

Urban storm water transport and wash-off of Cæfesium-137 after the chernobyl accident

  • Sven Halldin
  • Allan Rodhe
  • Bjorn Bjurman
Article

Abstract

Radiation protection planning in urban areas after a radioactive fallout requires knowledge of decontamination caused by storm water transport. This report elucidates the transport of 137Cs from a roof and three storm sewers in Uppsala during the first rainfall after those, on 29–30 April 1986, causing the Chernobyl contamination. Runoff and concentration Of 137Cs in storm water were determined with an accuracy of 10 to 15%. The origin of storm water was determined from its content of 18O. Surface contamination was measured on 3 July 1986. Total fallout was 25 kBq m−2. During the rainfall on 11 May, 4 kBq m−2 were transported from the roof and approximately 1 kBq m−2 from the sewered areas. From 30 April to 4 July there was a decontamination of 13 to 20 kBq m−2. Measurements from another project showed that the fallout rain events washed off 10 to 16 kBq m−2. The wash-off by the small rainfall on 11 May constituted one third of the remaining decontamination occurring up until 4 July. The transport of 137Cs during the 11 May event increased when the runoff increased, but was less efficient as the event proceeded. The relations between 137Cs concentrations and runoff implied that the wash-off of 137Cs in Uppsala was totally dominated by that bound to particles.

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References

  1. Bachhuber, H., Bunzl, K., and Schimmack, W.: 1982, Nuclear Technology 59, 291.Google Scholar
  2. Bjurman, B., Erlandsson, B., Ingemansson, T., and Mattsson, S.: 1984, ‘Deposition of Radionuclides from Local Sources Studied in Sewage Sludge with Be-7 Concentration as a Normalizing Factor’, in Seminar on the Environmental Transfer to Man of Radio-nuclides Released from Nuclear Installations, Brussels, Belgium, 17–21 October 1983, Commission of the European Communities. V/7400/84-EN,FR, p. 125.Google Scholar
  3. Bjurman, B. and Vintersved, I.: to be published, Chernobyl Fallout Studied in Sewage Sludge from a Wet Deposition Area. Report. Swedish Defence Research Establishment, Stockholm.Google Scholar
  4. De Geer, L-E, Vintersved, I., Bjurman, B., Finck, R., Arntsing, R., and Jakobsson, S.: 1987, Radioactive Particles in Air and Precipitation in Sweden: Second Quarter 1986, Report C 20629–9.2. National Defence Research Institute, Stockholm, 34 pp.Google Scholar
  5. Erlandsson, B., Ingemansson, T., and Mattsson, S.: 1983, Water, Air, and Soil Pollution 20, 331.Google Scholar
  6. Falk, J.: 1987, ‘Urban Runoff — Swedish Experience’, in Seminar on Waste Water Treatment in Urban Areas, 7–9 Sept. 1986, Baltic Sea Environment Proceedings No 25, Baltic Environment Protection Commission — Helsinki Commission, Helsinki, p. 2.Google Scholar
  7. Ingemansson, T.: 1982, Sewage Sludge as a Sensitive Indicator far Airborne Radionuclides from Nuclear Power Plants. Studies of Distribution and Behaviour of Activation Products in the Terrestrial Environment, PhD Dissertation at the Department of Physics. University of Lund, 18 pp.Google Scholar
  8. Ingemansson, T., Mattsson, S., and Erlandsson, B.: 1981, Health Physics 41, 815.Google Scholar
  9. Ingemansson, T., Erlandsson, B., and Mattson, S.: 1983, Environmental Pollution (Series B) 5, 17.Google Scholar
  10. Mattsson, S., Bjurman, B., Erlandsson, B., Ingemansson, T., and Nilsson, M.: 1979, ‘Rötslam från reningsverk som känslig depositionsmätare av radioaktiva ämnen’, in Bidrag till Andra Nordiska Radioekologiseminariet, Helsingör, Danmark, 8–10 maj 1979, Nordic Liaison Committee for Atomic Energy, Risø, Denmark (Unpublished discourse).Google Scholar
  11. Mittelstædt, W., Steffens, W., and Führ, F.: 1983, ‘Die Verlagerung von Sr-90, Cs-137, Co-60 and Mn-54 in 2 deutschen Böden nach Simulierung einer störtfallbedingten Ablagerung in Freilandlysimetern’, in Seminar on the Transfer of Radioactive Materials in the Terrestrial Environment Subsequent to an Accident Release to Atmosphere, Dublin, Ireland, 11–15 April 1983, Commission of the European Communities V/3004/83-EN,FR,DE, p. 227.Google Scholar
  12. Persson, C., Rodhe, H., and De Geer, L-E: 1987, Ambio 16, 20.Google Scholar
  13. Rodhe, A.: 1987, The Origin of Streamwater Traced by Oxygen-18, Report Series A, No 41. Department of Physical Geography, Division of Hydrology, Uppsala, Uppsala University, 260 pp., Appendix 73 pp.Google Scholar
  14. Svensson, G.: 1987, Modelling of Solids and Metal Transport from Small Urban Watersheds, Dissertation No. 7, Department of Sanitary Engineering, Gothenburg, Chalmers University of Technology, 210 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Sven Halldin
    • 1
  • Allan Rodhe
    • 1
  • Bjorn Bjurman
    • 2
  1. 1.Section of HydrologyUppsala UniversityUppsalaSweden
  2. 2.Swedish Defence Research EstablishmentStockholmSweden

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