基于正交设计及EFDC模型的湖泊流域总量控制——以滇池流域为例

发布时间：2018-01-12 01:27

  本文关键词：基于正交设计及EFDC模型的湖泊流域总量控制——以滇池流域为例　出处：《中国环境科学》2016年12期 　论文类型：期刊论文

  更多相关文章： 污染负荷削减 正交实验设计 EFDC模型 数据包络分析 滇池流域

【摘要】：构建了基于正交设计-水质模拟-方案评价的污染物总量控制方案的方法体系,并应用于滇池流域.选择TN、TP作为总量控制指标,将滇池流域划分为6个子区单元,通过设计5水平(0%,5%,10%,15%,20%)6因素的正交试验表,得到25种不同削减方案;耦合EFDC模型模拟得到25种不同削减情景条件下湖泊水质的TN、TP浓度分布,计算各方案综合营养状态指数(TSI),筛选符合中度富营养化标准(60TSI(Σ)≤70)的方案,引入数据包络分析(DEA)计算各方案的效率得分,得分最高的方案为最优削减方案.研究表明,滇池的叶绿素a平均浓度与TP平均浓度具有极强的相关性,最优方案下滇池流域6个子区TN、TP在原排放量的基础上,削减比例均为20%,15%,10%,5%,0%,20%.
[Abstract]:The method system of total pollutant control scheme based on orthogonal design-water quality simulation-scheme evaluation was constructed and applied to Dianchi Lake Basin. TNT TP was selected as the total control index. Dianchi Lake Basin is divided into 6 sub-area units. By designing an orthogonal experimental table of 5 levels, 10 and 10 and 20 and 6 factors, 25 different reduction schemes are obtained. The combined EFDC model was used to simulate the concentration distribution of TNT in lake water under 25 different reduction scenarios, and the comprehensive nutritional status index of each scheme was calculated. According to the medium eutrophication criterion (60TSI (危) 鈮，

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