水质分区在供水系统水质管理中的应用

Application of water quality area division in the management of water quality in water supply system

由于用户用水量及管道基础数据不完善,供水管网水力模拟在实际供水系统中的应用受到了限制.供水系统水质分区充分利用水厂、管网中水质测点的监测数据,先筛选出适合聚类分析的水质指标,再利用聚类分析的方法确定各水厂的供水范围,进而根据多年的水质资料确定各水厂供水区域交汇的漂移带及区域末梢监测点.各区域末梢监测点的水质资料通过SCADA系统传至调度中心,为供水企业全面掌握供水系统的水质状态、确定合理的水质、水量调度方案提供了可靠的依据,便于从水质安全的角度实现供水系统宏观调控,指导各水厂科学、合理运行.该方法水质资料可获得性强、对用户用水量及管网基础资料的依赖性弱、方法科学合理,适用范围广,可操作性强,便于推广应用.

Because of the incomplete datum of user＇s water consumption and pipeline＇s basic information, the application of the hydraulic simulation in actual water supply system is very limited. The suggested method of area division for water supply system made the best use of the water quality monitoring datum of water plants and the measuring points in the system. Firstly, the proper water quality indexes for cluster analysis were screened, and the cluster method is applied to determine the water supply areas of each plant, and the cluster results of each month are used to determine the drifting belts of the area junctions and the boundary monitoring points of each water plant. Through SCADA system, the water quality monitoring datum from the boundary monitoring points of each area could be fed back to the dispatching center, which could provide the reliable basis for the water company to comprehensively master the system＇s water quality condi- tion. According to the water quality condition, from the standpoint of safe water supply, the company could make a reasonable plan of water quality and water volume to macroscopically regulate the water system, and guide each plant more scientifically for more reliable running. The water supply area division method has the advantages of better availability of the water quality data, and weaker dependency on the pipeline＇s basic data. Such a methed, wide in use and scientific for operation, has the value of popularization and application.