4D和Q检验模型在供水管网水质检验中的应用

Application of 4D and Q Inspection Models to Water Quality Inspection of Water Supply Pipe Network

鉴于城市供水管网末梢水质检验一直是供水水质监测的难点,以苏州市五个偏远小区供水管网末梢的水质指标数据为样本,应用数学统计模型中的4D检验模型和Q检验模型对所监测的水质数据进行了检验。结果表明,4D检验模型和Q检验模型均能快速、灵敏地检测出离群数据,其中4D检验模型对水中氯气及游离氯制剂、溶解性总固体、浑浊度等水质指标较为敏感;Q检验模型在不同的显著性水平下均能检测出水中溶解性总固体、总β放射性等水质指标的异常。可见应用数学统计模型可对供水管网水质进行检验与分析,从而可提高水质检测的科学性和合理性,亦可为供水管网建立水质模型与进行水质调度奠定良好的理论基础。

It is always a question to inspect water quality of the urban water supply pipe network end in monitoring water quality.Taking water quality indexes of pipe network end in five remote communities of Suzhou City as sample,4D and Q inspection models in mathematical statistics are applied to examine water quality monitoring data.The results show that both of inspection models can quickly detect abnormal data;4D inspection model is more sensitive to water quality indexes,such as free Chlorine and Chlorine preparation,total dissolved solid and turbidity;in different significant levels,Q inspection can verify abnormal water quality indexes including total dissolved solid,total β radioactivity.Therefore,statistics mathematical models can be applied to inspect and analyze water quality.It also raises scientificity and rationality of water quality inspection,which lays good theoretical foundations for establishing water quality model and dispatching water quality.