| Modified Weighting for Calculating the Average Concentration of Non-Point Source Pollutant |
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| 作者姓名： | 牟瑞芳 |
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| 作者单位： | School of |
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| 基金项目： | FoundationofSichuanScienceandTech nologyCommittee (No .0 1SG4 7 0 2 ) |
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| 摘 要： | The concentration of runoff depends upon that of soil loss and the latter is assumed to be linear to the value of EI that equals the product of total storm energy E times the maximum 30-min intensity，I^30 for a given rainstorm．Usually，the maximum accumulative amount of rain for a rainstorm might bring on the maximum amount of runoff，but it does not equal the maximum erosion and not always lead the maximum concentration．Thus，the average concentration weighted by amount of runoff is somewhat unreasonable．An improvement for the calculation method of non-point source pollution load put forward by professor Li Huaien is proposed．In replacement of the weight of runoff，E1 value of a single rainstorm is introduced as a new weight．An example of Fujing Rive rwatershed shows that its application is effective．
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| 关 键 词： | 权重修正 非定点源污染 负载计算 水文计算 环境污染 |
Modified Weighting for Calculating the Average Concentration of Non-Point Source Pollutant |
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| Mou Ruifang School of Environmental Science and Engineering,Southwest Jiaotong University,Chengdu ,China.Modified Weighting for Calculating the Average Concentration of Non-Point Source Pollutant[J].Journal of Southwest Jiaotong University,2004,12(1):69-72. |
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| Authors: | Mou Ruifang School of Environmental Science and Engineering Southwest Jiaotong University Chengdu China |
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| Institution: | School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The concentration of runoff depends upon that of soil loss and the latter is assumed to be linear to the value of EI that equals the product of total storm energy E times the maximum 30-min intensity I 30 for a given rainstorm. Usually, the maximum accumulative amount of rain for a rainstorm might bring on the maximum amount of runoff, but it does not equal the maximum erosion and not always lead the maximum concentration. Thus, the average concentration weighted by amount of runoff is somewhat unreasonable. An improvement for the calculation method of non-point source pollution load put forward by professor Li Huaien is proposed. In replacement of the weight of runoff, EI value of a single rainstorm is introduced as a new weight. An example of Fujing River watershed shows that its application is effective. |
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| Keywords: | Non-point source pollution Hydrological calculation procedure Load calculation of pollutants |
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