| SP模型缺陷及改进的研究 |
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| 引用本文： | 周志鹏,吴克宏,蔡建安.SP模型缺陷及改进的研究[J].中国环境监测,2004,20(5):54-57. |
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| 作者姓名： | 周志鹏 吴克宏 蔡建安 |
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| 作者单位： | 1. 解放军理工大学工程兵工程学院军事环境系,江苏,南京,210007
2. 安徽工业大学化工与环境学院,安徽,马鞍山,243002 |
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| 摘 要： | SP模型应用于高污染河流的水质分析时,因起始BOD浓度大,得出负数的DO临界值,而导致SP模型失效。本研究以BOD浓度L与自净系数f、氧亏值D乘积fD的比较为判据,分析耦合微分方程的性质及大气复氧速率之间的变化关系,通过将BOD—DO变化划分为三个阶段,完成了BOD浓度衰减及大气复氧过程的求解,这一改进可以有效弥补SP的模型缺陷。
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| 关 键 词： | 河流水质模型 BOD衰减 大气复氧 |
| 文章编号： | 1002-6002(2004)05-0054-04 |
| 修稿时间： | 2003年10月5日 |
The research of SP model's fault and modification |
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| ZHOU Zhi-peng,WU Ke-hong,CAI Jian-an.The research of SP model''s fault and modification[J].Environmental Monitoring in China,2004,20(5):54-57. |
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| Authors: | ZHOU Zhi-peng~ WU Ke-hong~ CAI Jian-an~ |
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| Institution: | ZHOU Zhi-peng~,WU Ke-hong~,CAI Jian-an~ |
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| Abstract: | When SP model is applied in the high polluted river water quality analysis, the DO critical value may be a negative number, because of the high initial BOD value. So the previous SP model loses effectiveness. This study depends on the comparison of the BOD value L and the arithmetic product of self-purification factor f and oxygen deficit value D, analyse the relationship between the nature of couple differential equation and the rate of air complex oxygen, and divide the BOD-DO curve into 3 phases. This modification can effectively make good the former SP model's fault. |
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| Keywords: | river water quality model BOD attenuation air complex oxygen |
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