OPTIMIZATION OF WATER DIVERSION SCHEME OF CHAO LAKE BY IMPROVED WATER QUALITY OVER-STANDARD RATE ALGORITHM

PANG Min; WANG Jingxian; XU Ruichen

doi:10.13205/j.hjgc.202203012

Volume 40 Issue 3

Mar. 2022

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PANG Min, WANG Jingxian, XU Ruichen. OPTIMIZATION OF WATER DIVERSION SCHEME OF CHAO LAKE BY IMPROVED WATER QUALITY OVER-STANDARD RATE ALGORITHM[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 74-80. doi: 10.13205/j.hjgc.202203012

Citation:

PANG Min, WANG Jingxian, XU Ruichen. OPTIMIZATION OF WATER DIVERSION SCHEME OF CHAO LAKE BY IMPROVED WATER QUALITY OVER-STANDARD RATE ALGORITHM[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 74-80. doi: 10.13205/j.hjgc.202203012

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OPTIMIZATION OF WATER DIVERSION SCHEME OF CHAO LAKE BY IMPROVED WATER QUALITY OVER-STANDARD RATE ALGORITHM

doi: 10.13205/j.hjgc.202203012

1. College of Environment Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
2. College of Environment, Hohai University, Nanjing 210024, China

Received Date: 2020-12-06
Available Online: 2022-07-07

Abstract

Abstract

Chao Lake is a storage site for the diversion project from the Yangtze River to the Huai River, it is of great significance to optimize the selection of water diversion schemes starting from the whole basin. The paper based on nearly 10 years measured data of hydrology, water quality and meteorology in Chao Lake area with the usage of two-dimensional unsteady water environment model to simulate the combination of external influencing factors. Uncertainty analysis, K-mediods clustering analysis, and SRRC sensitivity analysis were performed on the simulation results to obtain the external influencing factors' qualitative and quantitative weights. The weights of the external influencing factors of ammonia nitrogen and total phosphorus in the Baishitian River Estuary were ranked as diversion water quality (56%)>diversion flow (26%)>wind speed (18%), diversion water quality (57%)>wind speed (29%)>diversion flow (14%); the weights of ammonia nitrogen and total phosphorus in the Hangbu River Estuary were ranked as wind speed (71%)>diversion flow (16%)>Diversion water quality (13%), and wind speed (73%)>diversion water quality (18%)>diversion flow (9%), respectively. Based on the weights of external factors, the over-standard rate algorithm was improved. The over-standard rate of water diversion at Baishitian River Estuary (11.6%) was much lower than that of Hangbu River Estuary (28.4%), and the Baishitian River Estuary was selected as the best diversion scheme. That provided a certain reference value for the comparison and selection of water diversion schemes for large shallow lakes.
- water diversion project,
- uncertainty analysis,
- sensitivity analysis,
- external influence factors,
- water quality exceeding rate

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References(25)

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