摘要
为了在供水管网突发污染发生时快速准确定位污染源,以小规模开环式供水管网模拟系统为实验平台,采用多点投加高浓度次氯酸钠溶液模拟污染物扩散的方法进行实验研究与理论分析.在实验中监测多组管网平台监测点污染物浓度时变数据,在保证可靠性、准确性的基础上将监测数据作为反追踪模拟信息源.通过改进的基于拉格朗日算法的"模拟-优化反追踪数学模型"定位污染源,分析管网拓扑结构、优化时段和水力工况等因素对模型精度和效率的影响.研究表明,在模型影响因素合理表达的条件下,模拟结果准确率达93.3%.
Sodium hypochlorite solution was introduced from different intrusion points to a laboratory small-scaled and open water distribution system for the experimental study and theoretical analysis about contamination sources identification simulation in order to rapidly determine the location of pollution sources when contamination events occur in water supply system.Sets of contaminant concentrations at monitoring sites were collected to be used as data source by guaranteeing the accuracy of the measured results.The improved simulation-optimization method based on Lagrangian algorithm was applied to determine the location of contaminant intrusion points,and the effects of influencing factors such as system topologic structure,optimization time horizon,and hydraulic condition were analyzed.Results showed that the source location was determined with 93.3% accuracy on the premise of influencing factors appropriately set.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2011年第1期81-86,共6页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(50878108)
国家水体污染控制与治理科技重大专项资助项目(2009ZX07422-006)
山东省中青年科学家奖励基金资助项目(05BS08004)
青岛市科技发展计划重点资助项目(06-2-2-20-jch)
关键词
污染源
供水管网拓扑结构
优化时段
水力工况
contamination source
water supply system topologic structure
optimization time horizon
hydraulic condition
