摘要
为了明确城市污水中各种污染物质的分布规律,对典型城市二级处理出水中有机污染物、大肠杆菌、金属离子、浊度、色度等污染物进行了检测分析,在大量检测数据的基础上,通过概率纸检验和非参数假设检验等方法对污染物的分布规律进行了统计分析,发现二级处理污水中污染物在显著性水平α=0.10的条件下都服从或近似服从对数正态分布,从而可用对数正态分布函数对城市污水中污染物的出现频率进行量化描述,为水质模型的建立和运行提供基础资料。
In order to identify the statistical distribution of pollutants in municipal wastewater, the author monitored and analyzed the concentration of pollutants such as organic matters, total coliform, metal ions, turbidity and color in the secondary effluent from a typical municipal wastewater treatment plant. The monitoring data were analyzed with nonparametric hypothesis testing method and it was found that the concentration of all pollutants fit with lognormal distribution well (the significance level α=0.10). Thus, the lognormal distribution can be used as the statistical model for the pollutants of wastewater.
出处
《给水排水》
CSCD
北大核心
2009年第S2期108-111,共4页
Water & Wastewater Engineering
基金
国家"十一五"科技支撑计划项目(2006BAJ01B03-02)
北京市教委科技计划面上项目(KM200810016006)
关键词
非参数假设检验
对数正态分布
城市污水
分布规律
Nonparametric hypothesis testing
Lognormal distribution
Municipal wastewater
Statistical distribution
