Comparison of Supersaturated Total Dissolved Gas Dissipation with Dissolved Oxygen Dissipation and Reaeration
Publication: Journal of Environmental Engineering
Volume 139, Issue 3
Abstract
Elevated levels of total dissolved gas (TDG) may occur downstream of dams, leading to increased incidence of gas bubble disease in fish. Accelerating the dissipation of supersaturated TDG in the downstream river can mitigate this problem; however, data useful for modeling the dissipation of supersaturated TDG through the free surface in natural rivers are limited. Lacking data to the contrary, prior modeling studies have assumed (1) dissolved oxygen (DO) is a reasonable proxy for TDG; and (2) unsaturated reaeration is sufficiently similar to supersaturated dissipation such that the same rate coefficients may be applied to either process. To test the validity of these assumptions and motivate future research, laboratory experiments were conducted to estimate the first-order dissipation rate coefficients for supersaturated DO and TDG and the reaeration rate coefficients for DO under identical turbulence conditions. The results indicate the dissipation process is quantitatively different from the reaeration process, and TDG behavior is quantitatively different from DO. Comparison of laboratory results with prior field research leads to speculation that increasing river turbulence and/or decreasing in water depth may be possible methods for promoting the TDG dissipation rate and reducing the length of a river affected by supersaturation.
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Acknowledgments
This material is based on work supported by the National Natural Science Foundation of China, Grant No. 51179111 and the U.S. National Science Foundation under Grant No. 0710901.
References
Caetano de Souza, A. C. (2008). “Assessment and statistics of Brazilian hydroelectric power plants: Dam areas versus installed and firm power.” Renewable Sustainable Energy Rev., 12(7), 1843–1863.
Chen, Y., Peng, Q., and Liao, W. (2009). “The evolvement study on supersaturation of dissolved gas in the middle reaches of Yangtze River after the Three Gorges Project Running.” J. Hydroecol., 2(5), 1–5 (in Chinese).
Cheng, X., Chen, X., and Chen, Y. (2009). “Numerical simulation of dissolved oxygen concentration in the downstream of Three Gorges Dam.” Proc., World Environmental and Water Resources Congress 2009: Great Rivers, ASCE, Reston, VA, 2891–2901.
Chu, C. R., and Jirka, G. H. (2003). “Wind and stream flow induced reaeration.” J. Environ. Eng., 129(12), 1129–1136.
DeMoyer, C. D., Schierholz, E. L., Gulliver, J. S., and Wilhelms, S. C. (2003). “Impact of bubble and free surface oxygen transfer on aeration systems.” Water Res., 37(8), 1890–1904.
Duan, Z., Martin, J. L., McAnally, W. H., and Stockstill, R. L. (2009). “Combined effects of wind and streamflow on gas-liquid transfer rate.” J. Environ. Eng., 135(8), 653–659.
Feng, J., Li, R., Li, K., Li, J., and Qu, L. (2010). “Study on release process of supersaturated total dissolved gas downstream of high dam.” J. Hydroelec. Eng., 29(1), 7–12 (in Chinese).
Fu, X.-L., Li, D., and Zhang, X.-F. (2010). “Simulation of the three-dimensional total dissolved gas saturation downstream of spillways under unsteady conditions.” J. Hydrodyn. Ser. B, 22(4), 598–604.
Geldert, D. A., Gulliver, J. S., and Wilhelms, S. C. (1998). “Modeling dissolved gas supersaturation below spillway plunge pools.” J. Hydraul. Eng., 124(5), 513–521.
Gualtieri, C., Gualtieri, P., and Doria, G. P. (2002). “Dimensional analysis of reaeration rate in streams.” J. Environ. Eng., 128(1), 12–18.
Huang, X., Li, K., Li, R., Li, J., and Du, J. (2010). “Experimental system for the simulation of total dissolved gas supersaturated water of high dams.” J. Sichuan Univ. (Eng. Sci. Ed.), 42(4), 25–28 (in Chinese).
Johnson, E. L., et al. (2007). “Estimating Adult Chinook Salmon exposure to dissolved gas supersaturation downstream of hydroelectric dams using telemetry and hydrodynamic models.” River Res. Appl., 23(9), 963–978.
Leopold, L. B., and Maddock, T., Jr. (1953). The hydraulic geometry of stream channels and some physiographic implications, U.S. Government Printing Office, Washington, DC.
Li, R., Luo, L., Fu, X.-Y., and Huang, W.-D. (2002). “Effect of hydrodynamic characteristics on reaeration process.” J. Environ. Sci. (China), 14(3), 393–398.
Li, L., Qin, C., Peng, Q., Yan, Z., and Gao, Q. (2010). “Numerical simulation of dissolved oxygen supersaturation flow over the Three Gorges Dam Spillway.” Tsinghua Sci. Technol., 15(5), 574–579.
Orlins, J. J., and Gulliver, J. S. (2000). “Dissolved gas supersaturation downstream of a spillway II: Computational model.” J. Hydraul. Res., 38(2), 151–159.
Politano, M., Carrica, P., and Weber, L. (2009). “A multiphase model for the hydrodynamics and total dissolved gas in tailraces.” Int. J. Multiphas. Flow, 35(11), 1036–1050.
Qu, L., Li, R., Li, K., and Deng, Y. (2011). “Field observation of total dissolved gas supersaturation of high-dams.” Sci. China Technol. Sci., 54(1), 156–162.
Weitkamp, D. E., Sullivan, R. D., Swant, T., and DosSantos, J. (2003). “Gas bubble disease in resident fish of the Lower Clark Fork River.” Trans. Am. Fish. Soc., 132(5), 865–876.
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© 2013 American Society of Civil Engineers.
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Received: Jul 12, 2011
Accepted: Jun 1, 2012
Published online: Aug 3, 2012
Published in print: Mar 1, 2013
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