Abstract
A three-dimensional advection-diffusion model coupled with the degradation process is established for describing the transport of chemical oxygen demand (COD). Comparison of the simulated distribution of COD at the surface in the Bohai Sea in August, 2001 with field observations, shows that the model simulates the dataset reasonably well. The Laizhou Bay, Bohai Bay, and Liaodong Bay were contaminated heavily near shore. Based on the optimal discharge flux method, the Environmental Capacity (EC) and allocated capacities of COD in the Bohai Sea are calculated. For seawater of Grades I to IV of the Chinese National Standard, the ECs of COD in the Bohai Sea were 77×104 t/a, 116×104 t/a, 154×104 t/a and 193×104 t/a, respectively. The Huanghe (Yellow) River pollutant discharge accounted for the largest percentage of COD at 14.3%, followed by that of from the Liugu River (11.5%), and other nine local rivers below 10%. The COD level in 2005 was worse than that of Grade II seawater and was beyond the environmental capacity. In average, 35% COD reduction is called to meet the standard of Grade I seawater.
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References
Chen L Q. 2004. Environment assessment and study on the total quantity control of pollution in the Laizhou Bay. Qingdao, Ocean University of China. p. 42–61. (in Chinese with English abstract)
Chen S J. 1988. The research on the prediction of water quality and the physical self-purification capability of the Bohai Sea and ten bays in China. Journal of Shangdong College of Oceanology, 18(2): 1–80. (in Chinese)
Cui Z G. 2008. Study on scheme of total emission control of main chemical pollution in 13 cities around Bohai Sea. Qingdao, Ocean University of China. (in Chinese with English abstract)
Guo L B, Jiang W S, Li F Q, Wang X L. 2007. Environmental capacity calculation of COD and PHs in the Bohai Sea. Periodical of Ocean University of China, 37(2): 310–316. (in Chinese with English abstract)
Guo Q, Wang X L, Han X R, Wang J T. 2005. Spatial distribution of COD and its contribution to the eutrophication in Bohai Sea. Marine Science, 29(9): 71–75. (in Chinese with English abstract)
Hainbucher D, Wei H, Pohlmann T, Sündermann J, Feng S Z. 2004. Variability of the Bohai Sea circulation based on model calculations. Journal of Marine Systems, 44: 153–174.
Hu X M. 2007. Water quality numerical simulation and entrophication assessment in the Liaodong Bay. Dalian, Dalian University of Technology. p. 40–60. (in Chinese with English abstract)
Huang D J, Chen Z Y, Su J L. 1996. The application of three-dimensional shelf sea model in the Bohai Sea: I. Numerical Simulation of tidal and wind-driven current. Acta Oceanologica Sinica, 18(5): 1–13. (in Chinese with English abstract)
Ji M, Sun Z W, Wang Z L, Tao J H. 1999. A simulation experiment of the biodegradation process of COD from ocean outfall discharge in Bohai Bay. Oceanologia et Limnologia Sinica, 30(6): 731–736. (in Chinese with English abstract)
Li S Y, Li Y C, Chen B L, Wu Q H. 1999. A new approach to determine environmental capacity of coastal waters. Environmental Science, 20(4): 96–99. (in Chinese with English abstract)
Liu H, Yin B S. 2006. Numerical calculation on the content of nitrogen, phosphate and COD in the Liaodong Bay. Marine Science Bulletin, 25(2): 46–54. (in Chinese with English abstract)
Qiao L L, Liu R Z, Bao X W, Li Z. 2008. Prognostic of environmental capacity variation in Bohai based on the economy increase. China Population, Resources and Environment, 18(2): 76–81. (in Chinese with English abstract)
Qiao X D. 2009. The Study on Jiaozhou Bay Discharge Regions and Accurate Calculations of Their Allocated Capacities of Major Pollutants. Ph.D. thesis. Qingdao: Ocean University of China. p. 28–88. (in Chinese with English abstract)
State Ocean Administration. 2000. Bulletin of China Ocean Environmental State at the end of the 20th Century, Beijing. (in Chinese)
Su J Y, Liu S K, He S L, Qin P Y, Zou S M, Zhai S H. 1992. Water quality management in Tai Lake. Journal of Hydraulic Engineering, 37(11): 22–36. (in Chinese with English abstract)
Wang Q. 2004. A Numerical Modeling Study of the Circulation and Plankton Ecosystem Dynamics of the Bohai Sea. M.S. thesis. Qingdao: Ocean University of China. p. 11–14. (in Chinese with English abstract)
Wang X L, Deng N N, Li K Q, Shi X Y, Zhu C J, Han X R, Zhang C S, Wang L. 2004a. Petroleum pollution condition and estimation of it environmental capacities summer in Bohai Sea. Marine Environmental Science, 23(4): 14–18. (in Chinese with English abstract)
Wang X L, Li K Q. 2006. Marine environmental capacity of pollutants in Bohai Sea. Science Press, Beijing, China. p. 212–264. (in Chinese)
Wang X L, Cui Z G, Li K Q, Han X R, Li Y B, Zhu C J. 2008. Study on the gross control of DIN environmental capacity in the peripheral zone of the Bohai Sea. Periodical of Ocean University of China, 38(4): 619–622. (in Chinese with English abstract)
Wang X L, Cui Z G, Li K Q, Liang S K, Zhu C J, Guo Q. 2009. Study on estimation of flux of COD and allocation capacity in Bohai Sea. Marine Environmental Sciences, 28(5): 497–500. (in Chinese with English abstract)
Wang Y. 2005. Numerical Study on Physical Self-purification Capability and Environment Capacity in Bohai Bay under the Effect of Tide Current. M. S. thesis. Qingdao: Ocean University of China. p. 50–57. (in Chinese with English abstract)
Wang Z L, Tao J H, Ji M, Sun Z W. 2004b. Study on dispersion and degradation of COD in the Bohai Bay. Marine Science Bulletin, 23(1): 27–31. (in Chinese with English abstract)
Wei H, Tian T, Zhou F, Zhao L. 2002. Numerical study on the water exchange of the Bohai Sea: Simulation of the half-life time by dispersion model. Journal of Ocean University of Qingdao, 32(4): 519–525. (in Chinese with English abstract)
Wu J, Wang Z J. 1983. The turn-over and self-cleaning capability of seawater in Dalian Bay. Marine Science, 7(6): 32–35. (in Chinese with English abstract)
Xie L. 2005. Key Technologies on Decision Support System for Pollution Control Based on Environment Capacity in Liaodong Bay. M. S. thesis. Wuhan: Wuhan University. p.38–46. (in Chinese with English abstract)
Xu C J. 2006. Research on the Environmental Capacity Based Total Pollutant Discharge Quantity Control and System Development. M. S. thesis. Hangzhou: Zhejiang University. p. 45–51. (in Chinese with English abstract)
Zhu J. 2007. Research on Contaminants Transport Law and Environment Capacity in Coastal Area. M. S. thesis. Nanjing: Hohai University. p. 53–59. (in Chinese with English abstract)
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Supported by 908 Program of the State Ocean Administration of China (Nos. 908-02-02-02, 908-02-02-03) and the State Ocean Administration Foundation of China (No. 200805065)
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Zhao, X., Wang, X., Shi, X. et al. Environmental capacity of chemical oxygen demand in the Bohai Sea: modeling and calculation. Chin. J. Ocean. Limnol. 29, 46–52 (2011). https://doi.org/10.1007/s00343-011-9080-3
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DOI: https://doi.org/10.1007/s00343-011-9080-3