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Calculation and Analysis of Mass Transfer Coefficient of Aeration to Supersaturated Total Dissolved Gas
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Yuan-bo YAO, Hui-xia YANG, Yun-yun WANG, Cai-hong LIU, Jia-jia LIANG
Water Resources and Power | 2023, 41(5) : 55 - 58
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Water Resources and Power | 2023, 41(5): 55-58
HYDROLOGY, WATER RESOURCES AND ENVIRONMENT
Calculation and Analysis of Mass Transfer Coefficient of Aeration to Supersaturated Total Dissolved Gas
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Yuan-bo YAO, Hui-xia YANG, Yun-yun WANG, Cai-hong LIU, Jia-jia LIANG
Affiliations
  • College of Civil Engineering, Guizhou University, Guiyang 550025, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221468
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The supersaturated total dissolved gas (TDG) is mainly caused by the discharge of high dam spillway, excess oxygen production of plant photosynthesis and sharp increase in water temperature, which may directly lead to fish and aquatic organisms suffering from gas bubble disease (GBD) or even death. In order to explore the measures to mitigate the adverse effects of supersaturated TDG, under different aeration conditions, the swirl mixing aeration mode has an obvious effect on the release of supersaturated TDG, its effect is slightly stronger than that of pinhole aeration method, and the aeration rate has the greatest impact on the mass transfer coefficient of supersaturated TDG, followed by the aeration depth, and the aeration diameter is the smallest. The relationship between supersaturated TDG mass transfer coefficient and aeration rate, aeration diameter and aeration depth is obtained, respectively. The average error is within ±6.25%. The research results provide a data basis for mitigating the adverse effects of supersaturated TDG.

aeration  /  supersaturated TDG  /  aeration rate  /  aeration diameter  /  aeration depth  /  mass transfer coefficient
Yuan-bo YAO, Hui-xia YANG, Yun-yun WANG, Cai-hong LIU, Jia-jia LIANG. Calculation and Analysis of Mass Transfer Coefficient of Aeration to Supersaturated Total Dissolved Gas[J]. Water Resources and Power, 2023 , 41 (5) : 55 -58 . DOI: 10.20040/j.cnki.1000-7709.2023.20221468
Year 2023 volume 41 Issue 5
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doi: 10.20040/j.cnki.1000-7709.2023.20221468
  • Receive Date:2022-07-17
  • Online Date:2026-01-28
  • Published:2023-05-25
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  • Received:2022-07-17
  • Revised:2022-08-19
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    College of Civil Engineering, Guizhou University, Guiyang 550025, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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