A model of ⁹⁰Sr distribution in the sea near Daya Bay Nuclear Power Plant in China

Abstract

The impact on the environment of radionuclide release from nuclear power plants has attracted increased attention, especially after the accident at Fukushima Daiichi Nuclear Power Plant in Japan. Based on the mechanisms of adsorption/desorption at solid/liquid interfaces and a surface micromorphology model of sediments, a theoretical expression of the distribution coefficient K_d is derived. This coefficient has significant effects on the distribution of radionuclide in seawater, suspended sediment and seabed sediment. K_d is then used to simulate ⁹⁰Sr transport in the sea near the Daya Bay Nuclear Power Plant. The simulation results are compared with field measurements of tidal level, current velocity, suspended sediment concentration and ⁹⁰Sr concentrations in the same period. Overall, the simulated results agree well with the field measured data. Thus, the derived expression for K_d is capable of interpreting realistic adsorption/desorption processes. What’s more, conclusion is drawn that about 40% ⁹⁰Sr released by Daya Bay Nuclear Power Plant will be adsorbed by suspended sediment and 20% by seabed sediment, only about 40% ⁹⁰Sr will remain in the sea near Daya Bay Nuclear Power Plant in South China Sea.

Keywords

distribution coefficient / Daya Bay / hydrodynamic / sediment transport / radionuclide transport

References

[1] Zhu M X. Health effects and chelating measures of radionuclides. Carcinogenesis. Teratogenesis & Mutagenesis, 2011, 23(6): 468–472 (in Chinese)

[2] Sakan S M, Sakan N M, Dordevic D S. Trace element study in Tisa River and Danube alluvial sediment in Serbia. International Journal of Sediment Research, 2013, 28(2): 234–245

[3] Fang H W, Chen M H, Chen Z H, Zhao H M, He G J. Effects of sediment particle morphology on adsorption of phosphorus elements. International Journal of Sediment Research, 2013, 28(2): 246–253

[4] Kumar A, Karpe R, Rout S, Joshi V, Singhal R K, Ravi P M. Spatial distribution and accumulation of ²²⁶Ra, ²²⁸Ra, ⁴⁰K and ¹³⁷Cs in bottom sediments of Mumbai Harbour Bay. Journal of Radioanalytical and Nuclear Chemistry, 2013, 295(2): 835–839

[5] Zheleznyak M J, Demchenko R I, Khursin S L, Kuzmenko Y I, Tkalich P V, Vitiuk N Y. Mathematical modeling of radionuclide dispersion in the Pripyat-Dnieper aquatic system after the Chernobyl accident. Science of the Total Environment, 1992, 112(1): 89–114

[6] Abril J M, Garcia-Leon M. A 2D 4-Phases marine dispersion model for radionuclides-Part 1: Conceptual and computational model. Journal of Environmental Radioactivity, 1993, 20(2): 71–88

[7] Nielsen S P. A box model for North-East Atlantic coastal waters compared with radioactive tracers. Journal of Marine Systems, 1995, 6(5-6): 545–560

[8] Harms I H. Modelling the dispersion of ¹³⁷Cs and ²³⁹Pu released from dumped waste in the Kara Sea. Journal of Marine Systems, 1997, 13(1–4): 1–19

[9] Jin L X, He M C, Zhang J H. Effects of different sediment fractions on sorption of galaxolide. Frontiers of Environmental Science & Engineering, 2012, 6(1): 59–65

[10] Mrabet R E, Abril J M, Manjón G, Tenorio R G. Experimental and modeling study of ²⁴¹Am uptake by suspended matter in freshwater environment from southern Spain. Journal of Radioanalytical and Nuclear Chemistry, 2004, 261(1): 137–144

[11] Periáñez R. Modelling the environmental behaviour of pollutants in Algeciras Bay (south Spain). Marine Pollution Bulletin, 2012, 64(2): 221–232

[12] Laissaoui A, Abril J M, Periáñez R, León M G, Montafio E G. Kinetic transfer coefficients for radionuclides in estuarine waters: Reference values from ¹³³Ba and effects of salinity and suspended load concentration. Journal of Radioanalytical and Nuclear Chemistry, 1998, 237(1–2): 55–61

[13] Fang H W, Chen M H, Chen Z H. Surface pore tension and adsorption characteristics of polluted sediment. Science in China Series G-Physics Mechanics & Astronomy, 2008, 51(8): 1022–1028

[14] Fang H W, Zhao H M, Shang Q Q, Chen M H. Effect of biofilm on the rheological properties of cohesive sediment. Hydrobiologia, 2012, 694(1): 171–181

[15] Banin A, Gal M, Zohar Y, Singer A. Specific surface area of clays in lake sediments-measurement and analysis of contributors in Lake Kinneret, Israel. Limnology and Oceanography, 1975, 20(2): 278–282

[16] Kribi S, Ramaroson J, Nzihou A, Sharrock P, Depelsenaire G. Laboratory scale study of an industrial phosphate and thermal treatment for polluted dredged sediments. International Journal of Sediment Research, 2012, 27(4): 538–546

[17] Fang H W, Chen M H, Chen Z H. Surface Characteristics and Model of Environmental Sediment. Beijing: Science Press, 2009 (in Chinese)

[18] Langmuir I. The adsorption of gases on plane surface of glass, Mica and Platinum. Journal of the American Chemical Society, 1918, 40(9): 1361–1403

[19] Chen Z Q, Wang G X, Xu G Y. Colloid and Interface Chemistry. Beijing: Higher Education Press, 2001 (in Chinese)

[20] Levich V G. Physicochemical Hydrodynamics. New Jersey: Prentice Hall, 1962

[21] Qian N, Wan Z H. Sediment Transport Mechanics. Beijing: Science Press, 1983 (in Chinese)

[22] Wen X H, Du Q, Tang H X. Surface complexation model for the heavy metal adsorption on natural sediment. Environmental Science & Technology, 1998, 32(7): 870–875

[23] Chen Q W, Ma J F, Wang Z J, Huang G X. Biological early warning and emergency management support system for water pollution accident. Transactions of Tianjin University, 2012, 18(3): 201–205

[24] Peng W Q, Xue H, Sun D P, He S H. Study on numerical simulation of river sink. Journal of Hydraulic Engineering, 2002, (1): 16–22 (in Chinese)

[25] Fang H W, Liu B, Huang B B. Diagonal cartesian method for numerical simulation of flow and suspended sediment transport over complex boundaries. Journal of Hydraulic Engineering, 2006, 132(11): 1195–1205

[26] Greimann B P, Muste M, Holly F M Jr. Two-phase formulation of suspended sediment transport. Journal of Hydraulic Research, 1999, 37(4): 479–500

[27] Wang J Y, Tang H S, Fang H W. A fully coupled method for simulation of wave-current-seabed systems. Communications in Nonlinear Science and Numerical Simulation, 2013, 18(7): 1694–1709

[28] Shao X J, Wang X K. Introduction to River Mechanics. Beijing: Tsinghua University Press, 2005 (in Chinese)

[29] Argonne National Laboratory, EVS Human Health Fact Sheet, 2006

[30] Guangdong Research Institute of Water Resources and Hydropower. Numerical simulation report of low-level radioactive waste water discharge in Phase III Expansion Project of Lingao Nuclear Power Plant, 2007 (in Chinese)

[31] Shi Z Q, Qu J Y, Cui Y L. Environmental radioactive contamination and its control for nuclear power plants. Radiation Protection, 1998, 18(4): 241–260 (in Chinese)

[32] Liu G S, Zhou C Y. Contents and behavior characteristics of ¹³⁷Cs and ⁹⁰Sr in various mediums of Daya Bay. Journal of Oceanography in Taiwan Straits, 2000, 19(3): 261–268 (in Chinese)

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Higher Education Press and Springer-Verlag Berlin Heidelberg