考虑悬浮物吸附沉降作用的海湾放射性核素迁移数值模拟  

Numerical modeling on radionuclide migration adsorbed bysuspended matter in estuary

作　　者：陈家军[1] 张俊丽[1] 王红旗[1] 李源新[2] 黄乃明[2] 

机构地区：[1]北京师范大学环境科学研究所环境模拟与污染控制国家重点联合实验室,北京100875 [2]广东省环境辐射研究监测中心,广东广州510300

出　　处：《海洋环境科学》2003年第2期28-32,共5页Marine Environmental Science

基　　金：广东省环境保护局科技攻关项目(粤环1999 31)

摘　　要：首次建立了考虑悬浮物对放射性核素的吸附沉降影响的海湾放射性核素迁移数值模型,并对模型进行了检验,对所建模型和先前不考虑悬浮物吸附沉降影响的放射性核素迁移模型进行了模拟对比分析,充分体现了考虑悬浮物对核素迁移影响进去的必要性。应用本模型对大亚湾核电站排出的放射性污染物137Cs在大鹏澳内的迁移分布状况进行了模拟分析,其模拟结果与实测结果吻合良好,表明了本模型的可靠性,可为放射性污染源对海湾环境影响评价提供科学依据。A water quality model of radionuclide migration adsorbed by suspended matter in a bay is developed the first time. Comparison of the new developed model with the previous model without this mechanism is conducted. It shows that the necessity of the mechanism may be included. The model in this paper has been used to simulate the transport of 137Cs in Dapeng bay, which is one critical radionuclide in liquid effluent from GNPS. The simulation results are in agreement with the monitored data. This shows that the reliable model can provide scientific bases for environmental impact assessment of a bay by radioactive pollution sources.

关 键 词：放射性核素 悬浮物 吸附沉降 对流扩散模型 数值模拟 

分 类 号：X591[环境科学与工程—环境工程]