Water Science and Engineering 2011, 4(4) 396-404 DOI:   doi:10.3882/j.issn.1674-2370.2011.04.004  ISSN: 1674-2370 CN: 32-1785/TV

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total dissolved gas supersaturation
dissolved gas in water
experimental study
dam discharge
Article by Lu,.Q
Article by Ran,.L
Article by Jia,.L
Article by Ke-feng,.L
Article by Lin,.W

Experimental study on total dissolved gas supersaturation in water

Lu QU1, 2, Ran LI*2, Jia LI2, Ke-feng LI2, Lin WANG2

1. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, P. R. China
2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, P. R. China


More and more high dams have been constructed and operated in China. The total dissolved gas (TDG) supersaturation caused by dam discharge leads to gas bubble disease or even death of fish. Through a series of experiments, the conditions and requirements of supersaturated TDG generation were examined in this study. The results show that pressure (water depth), aeration, and bubble dissolution time are required for supersaturated TDG generation, and the air-water contact area and turbulence intensity are the main factors that affect the generation rate of supersaturated TDG. The TDG supersaturation levels can be reduced by discharging water to shallow shoals downstream of the dam or using negative pressure pipelines. Furthermore, the TDG supersaturation levels in stilling basins have no direct relationship with those in reservoirs. These results are of great importance for further research on the prediction of supersaturated TDG generation caused by dam discharge and aquatic protection.

Keywords total dissolved gas supersaturation   dissolved gas in water   experimental study   dam discharge  
Received 2011-05-01 Revised 2011-10-08 Online: 2011-12-30 
DOI: doi:10.3882/j.issn.1674-2370.2011.04.004
This work was supported by the National Natural Science Foundation of China (Grant No. 50979063).
Corresponding Authors: Ran LI
Email: liran@scu.edu.cn
About author:


Chen, Y. B., Peng, Q. D., and Liao, W. G. 2009a. The evolvement study on supersaturation of dissolved gas in the middle reaches of Yangtze River after the Three Gorges Project running. Journal of Hydroecology, 2(5), 1-5. (in Chinese)
Chen, Y. C., Fu, J., Liu, Z. W., Cheng, X. J., and Zhu, D. J. 2009b. Analysis of the variety and impact factors of dissolved oxygen downstream of Three Gorges Dam after the impoundment. Advances in Water Science, 20(4), 526-530. (in Chinese)
Feng, J. J., Li, R., Li, K. F., Li, J., and Qu, L. 2010. Study on release process of supersaturated total dissovled gas downstream of high dam. Journal of Hydroelectric Engineering, 29(1), 7-12. (in Chinese)
Huang, H. Q. 2002. Computational Model of Total Dissolved Gas Downstream of a Spillway. Ph. D. Dissertation. Iowa: University of Iowa.
Jiang, L., Li, J., Li, R., and Li, K. F. 2008a. A study of dissolved gas supersaturation downstream of Zipingpu dam. Advances in Water Science, 19(3), 367-371. (in Chinese)
Jiang, L., Li, J., Li, R., and Li, K. F. 2008b. The supersaturation of dissolved gas in downstream of high dam. Journal of Sichuan University (Engineering Science Edition), 40(5), 69-73. (in Chinese)
Li, R., Li, J., Li, K. F., Deng, Y., and Feng, J. J. 2009. Prediction for supersaturated total dissolved gas in high-dam hydropower projects. Science in China, Series E: Technological Sciences, 52(12), 3661-3667. [doi:10.1007/s11431-009-0337-4]
Orlins, J. J., and Gulliver, J. S. 2000. Dissolved gas supersaturation downstream of a spillway Ⅱ: Computational model. Journal of Hydraulic Research, 38(2), 151-159.
Politano, M., Carrica, P., Turan, C., and Weber, L. 2007. A multidimensional two-phase flow model for the total dissolved gas downstream of spillways. Journal of Hydraulic Research, 45(2), 165-177. [doi:10.1080/00221686.2007.9521757]
Politano, M., Carrica, P., and Weber, L. 2009. A multiphase model for the hydrodynamics and total dissolved gas in tailraces. International Journal of Multiphase Flow, 35(11), 1036-1050.
Qin, C. L., and Li, L. 2008. Numerical model of dissolved gas supersaturation flow over spillway of Gezhou Dam Project. Science and Technology Review, 26(18), 45-48. (in Chinese)
Qu, L., Li, R., Li, J., Li, K. F., and Deng, Y. 2011. Field observation of total dissolved gas supersaturation of high-dams. Science in China, Series E: Technological Sciences, 54(1), 156-162. [doi:10.1007/ s11431-010-4217-8.]
Tan, D. C. 2006. Research on the Lethal Effect of the Dissolved Gas Supersaturation Resulted from Three Gorges Project to Fish. Chongqing: Southwest University. (in Chinese)
Tan, D. C., Ni, Z. H., Zheng, Y. H., Li, L. Y., and Li, Y. F. 2006. Dissolved gas supersaturation downstream of dam and its effects on fish. Freshwater Fisheries, 36(3), 56-59. (in Chinese)
Urban, A. L., Gulliver, J. S., and Johnson, D. W. 2008. Modeling total dissolved gas concentration downstream of spillways. Journal of Hydraulic Engineering, 134(5), 550-561. [doi:10.1061/(ASCE) 0733-9429(2008)134:5(550)]
U.S. Army Corps of Engineers (USACE). 2005. Technical Analysis of TDG Processes. Jacksonville: U.S. Army Corps of Engineers-Northwest Division, Environmental Resources and Fish Planning Offices.
Watson, C. C., Walters, R. W., and Hogan, S. A. 1998. Aeration performance of low drop weirs. Journal of Hydraulic Engineering, 124(1), 65-71. [doi:10.1061/(ASCE)0733-9429(1998)124:1(65)]
Weitkamp, D. E., and Katz, M. 1980. A review of dissolved gas supersaturation literature. Transactions of the American Fisheries Society, 109(6), 659-702. [doi:10.1577/1548-8659(1980)109<659:ARODGS> 2.0.CO;2]

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