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《Journal of Anhui Agricultural Sciences》 2011-17
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The Research of the Impact of the Ecological Water Diversion on Improvement of Water in Chaohu Lake

CHEN Chang-cai et al (Anhui Survey and Design institute of Water Conservancy and Hydrower, Hefei, Anhui 230088)  
The Chaohu Lake's demand for the ecological water diversion and the impact of the water diversion on the water quality of both eastern and western parts of Chaohu Lake based on the on-site water diversion test in 2009 were expounded. During the water diversion, the converged water volume of tributaries around Chaohu Lake was 502 million m3 while outflow volume was 631 million m3. The TP, TN of the lake increased for 77.6 t and 619 t separately, with CODMn being decreased for 517 t. The test result showed that after the water diversion, the TP density of the eastern lake had been increased for 7.6% and the concentration of TN、CODMn、Chla had been increased for 40.3%、8.2%、41.8% separately, while that for western lake had been increased by 82.5%、1.2%、3.9%、711.8% separately. When the concentration of the western lake increased, the density of eastern lake decreased simultaneously, which showed that the water diversion effect was obvious.
【Fund】: 国家水体污染控制与治理科技重大专项资助项目(2009ZX07103-006)
【CateGory Index】: X171;X524
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