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湖泊科学  2014 

基于EFDC模型的深圳水库富营养化模拟

DOI: 10.18307/2014.0309

Keywords: 水动力,水质,富营养化,深圳水库,EFDC模型

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Abstract:

基于EFDC模型构建了深圳水库三维水动力和富营养化定量模拟模型.分别用2009年和20102011年流量、水位和水质等观测数据对模型进行了校正和验证,准确地反映了深圳水库的水动力和水质变化过程.在此基础上,假定支流污染截排、水库调度和降低东江引水污染负荷3种情景进行深圳水库富营养化数值模拟,3种情景下库中Chl.a峰值浓度分别降低1.0%、16.4%和46.3%,平均浓度分别降低1.3%、29.8%和29.9%.深圳水库具有良好的交换能力,尚未出现水华暴发,但入库营养盐负荷高,存在较大的富营养化风险;在目前沙湾河污水已经截排的基础上再实施支流污染控制,对水质改善和藻类控制作用已不明显;水库调度和削减东江引水污染负荷对深圳水库水质和富营养化改善明显,能够有效降低水华发生的风险.

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