基于节点水龄的供水管网水质研究  

Study on Water Quality in Water Distribution System Based on Water Age of Nodes

作　　者：李寻[1,2] 张土乔[1] 翁风永[2] 徐江和[2] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310027 [2]东华理工大学土木学院,江西抚州344000

出　　处：《中国给水排水》2009年第19期103-105,共3页China Water & Wastewater

摘　　要：在分析供水管网动态水质模型的基础上,利用EPANET软件对某城镇供水管网的管段流速、节点水龄和余氯浓度进行模拟。结果表明,在同样的水力条件下,供水管网中节点水龄与余氯浓度的变化趋势互补,当管道的水流速度增大时,管网中对应节点的水龄变小、余氯浓度增大;根据《生活饮用水卫生标准》(GB 5479—2006)规定的余氯浓度,可以得到供水管网的允许节点水龄和允许节点最大水龄,为管网的安全供水提供了科学依据。Based on analysis of the dynamic model for water quality in water distribution system, the pipe velocity, node water age and residual chlorine concentration in a municipal water distribution system were simulated by EPANET software. The simulated results show that the water age is inversely correlated with residual chlorine concentration under the same hydraulic condition. When the pipe velocity is increased, the node water age is decreased and the residual chlorine concentration is increased. Furthermore, according to the residual chlorine stipulated in Standards for Drinking Water Quality （ GB 5479 -2006）, the permissible node water age and the maximum node water age can be attained, which provides a scientific basis for safe water supply.

关 键 词：供水管网 节点水龄 水质 模拟 

分 类 号：TU991.33[建筑科学—市政工程]