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本文根据杭嘉湖地区水文特性及水质状况,提出了改善区域水环境的水利工程总体布局,并运用一维水质模型,分析了工程实施后的效果;计算结果表明,在现状污染源情况下,遇1971年型枯水年,杭嘉湖地区CODcr年均浓度值平均可降低约8.4%,NH3-N降低18.4%。
Based on the hydrological characteristics and water quality in Hangjiahu Lake area, this paper proposed the overall layout of water conservancy project to improve the regional water environment, and applied the one-dimensional water quality model to analyze the effect after the project was implemented. The calculation results show that under the current situation of pollution sources, During the dry years, average CODcr concentration in Hangzhou-Jiaxing-Huzhou area decreased by about 8.4% on average and that of NH3-N by 18.4%.