给水管网二次加氯条件下的水质可靠度分析  

Water Quality Reliability Analysis of Booster Chlorination in Water Distribution Networks

作　　者：李莉[1,2] 张燕[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058 [2]同济大学交通运输工程学院,上海201804

出　　处：《同济大学学报（自然科学版）》2010年第3期392-396,共5页Journal of Tongji University:Natural Science

基　　金：国家水污染控制与治理重大专项基金资助项目(2008ZX07421-003)

摘　　要：针对给水管网二次加氯条件下的水质可靠度问题,在线性叠加理论适用的范围内,引入节点用水量权重因子,对以余氯质量浓度期望值为评价指标的可靠度评价方法进行简化和改进,提出以余氯覆盖率为评价指标的可靠度评价方法.应用理论研究成果对算例管网进行水质可靠度评价,结果表明,二次加氯能在显著降低管网加氯量和提高余氯质量浓度均匀性的基础上维持较高的水质可靠度.Two different methods of water quality reliability analysis under booster chlorination were presented,namely,a simplified method based on desired chlorine residual which brought in water demand variations and used the theory of linear superposition,and a new method based on chlorine residual coverage rate.The reliability analysis of water quality under booster chlorination was carried out within a water distribution network using these two methods.The results show that booster chlorination can maintain a high reliability without impairing its advantages in allowing a lower average chlorine and decreasing the variability of chlorine residuals which lead to a lower total dosage.

关 键 词：二次加氯 水质可靠度 余氯质量浓度期望值 余氯覆盖率 

分 类 号：TU991.3[建筑科学—市政工程]