| 北江重金属镉污染事故数值模拟 |
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| 引用本文： | 窦明,马军霞,谢东瑜,李晓华.北江重金属镉污染事故数值模拟[J].郑州大学学报(工学版),2007,28(2):117-120. |
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| 作者姓名： | 窦明 马军霞 谢东瑜 李晓华 |
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| 作者单位： | 1. 郑州大学,环境与水利学院,河南,郑州,450001
2. 中山大学,水资源与环境系,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金;河南省科技攻关项目 |
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| 摘 要： | 针对2005年12月发生在北江流域的重金属镉污染事故，建立了一维河流重金属迁移转化模型，结合污染事故实测资料，对模型进行了参数率定和验证．从计算结果来看，当水体中镉浓度值较大时，重金属模型计算值与实测值拟合效果较好，而镉浓度值较低时，则拟合效果不理想，此外，水体中镉浓度随着水流运动由上游向下游递减，这说明重金属在吸附、沉降作用下逐步沉积到底泥中．
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| 关 键 词： | 北江 重金属 数值模拟 |
| 文章编号： | 1671-6833（2007）02-0117-04 |
| 修稿时间： | 2007-02-202007-04--02 |
Numerical Simulation on Cadmium Pollution Emergency in North River |
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| DOU Ming,MA Jun-xia,XIE Dong-Yu,LI Xiao-hua.Numerical Simulation on Cadmium Pollution Emergency in North River[J].Journal of Zhengzhou University: Eng Sci,2007,28(2):117-120. |
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| Authors: | DOU Ming MA Jun-xia XIE Dong-Yu LI Xiao-hua |
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| Affiliation: | 1. School of Environment and Water Conservancy, Zhengzhou University,Zhengzhou 450001, China; 2. Department of Water Resources and Environment, Sun Yat - sen University, Guangzhou 510275, China |
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| Abstract: | In view of the cadmium pollution emergency in North River basin in Dec. 2005, one - dimension heavy metal transport and transformation model in rivers is established. Combined with the observed data of the pollution emergency, the parameters of heavy metal model are calibrated and validated. The conclusions are that the simulation effect between calculated value and observed value is rather good when the concentration value of cadmium in water is comparatively big, and the simulation effect is not ideal when the concentration value of cadmium is comparatively small. Furthermore, cadmium concentration of water body is decreased from upper reaches to lower reaches, and it shows that the heavy metal is subsided into the mud by the absorption and sedimentation actions. |
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| Keywords: | North River heavy metal numerical simulation |
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