基于模式识别的供水管网污染源追踪分析方法

针对供水管网单点源污染问题，建立了一种污染源定位分析方法，通过识别监测数据与模拟数据两系列之间的变化模式，求得污染物投加点、投加时间、投加浓度三者的信息．同时，针对可能存在的误差问题，提出了确定误差限的方法，进而保证最终求解结果包含真实污染源点．以某地区供水管网系统进行实例验证，结果表明，对于管网单点源连续注入式的污染事件，本方法可以较为快速而准确地定位出污染情况．对于实际供水管网污染的污染追踪，该方法具有一定的理论指导意义和应用价值．

Pollution Source Identification of Contamination in Water Distribution Networks Based on Pattern Recognition

In recent years, China＇s urban water faces pollution emergency frequently, and consumer complaint system, sampling of water quality monitoring and emergency monitoring were built to provide valuable first-hand information for controlling and eliminating pollution intrusion accidents. By means of water quality monitoring and feedback, the location of candidate contamination sources and the expansion trend are very helpful in developing a scientific and rational pollution control program to protect water supply pipe network. In this paper, the method for identifying a single pollution source in the water supply pipe network was proposed. By identifying the variation trend of monitor- ing data and simulation data, the location of pollution source, starting time and injecting rate can be calculated. At the same time, a method for determining error limits was proposed. The method was applied to a real-world water supply network. The results show that the proposed method can more rapidly and accurately identify the pollution caused by a single pollution source with continuous injection of pollution incidents.