城市污水处理厂进水规律表征与模型校核

Characterization of municipal WWTP influent pattern and model verification

进水水量水质的负荷变化是影响污水处理厂运行调控的重要因素。污水处理厂的进水特性时刻在变化,但从长期来看,其存在一定的变化规律。为研究污水处理厂进水规律,并探究建立对应水质水量预测模型的方法,分析了季节、天气及日类型对大渡口污水处理厂进水各指标的影响,在此基础上构建进水数学模型,并引入校核系数η对水量、COD、BOD5、TN、NH＋4-N和TP等参数进行校核,校核后各参数的模拟值与实测值相关性系数分别为80.6%～85.4%（2008年）,83.3%～87.3%（2009年）。研究结果可为污水处理系统计算机仿真和调控策略研究提供数据基础。

Load changes of water quantity and quality characteristics of influent are important factors affecting the control and operation of sewage treatment plants,and they change continually. However,in the long view,the changes follow general rules. To study the influent laws of sewage treatment plants and explore the methods of establishing a prediction model of water quality and influent flow,the influence of the season,weather,and the type of daily on the Dadukou sewage treatment plant influent were analyzed. From this analysis,an influent mathematical model was constructed,and the water quantity,COD,BOD5,TN,NH＋4-N,and TP were evaluated using the checking coefficient η. The correlation coefficients of simulated and measured values of the parameters after checking were 80. 6% to 85. 4% for 2008 and 83. 3% to 87. 3% for 2009. The results of this research provide a data basis for computer simulation of regulation strategy for wastewater treatment systems.