【作者】 顾军农； 白迪祺； 樊康平； 李玉仙； 刘文君； 石宝有； 张可欣； 吕谋； 王敏； 张磊； 马敏；

【机构】 北京市自来水集团有限责任公司； 清华大学； 中国科学院生态环境研究中心； 郑州自来水投资控股有限公司； 青岛理工大学；

【摘要】 随着"南水北调"中线工程逐步发挥作用,受水区的供水水源将会呈现多样性和复杂性,影响安全供水的因素越来越复杂,从而对处理工艺与输配水系统适应水源水质多样性的能力也提出更高的要求。本课题依托南水北调受水区北京和郑州两个重要城市,针对"南水北调"中线工程通水后受水区城市供水系统中存在的问题,从水源、水厂、配水管网等方面进行系统研究,为南水北调受水区城市的饮用水安全保障提供技术支持。研究发现:在丹江口水库水源水质条件下,常规处理工艺出水水质可满足国家《生活饮用水卫生标准》,因此,受水区城市新建水厂工艺选择时首选常规或强化常规处理工艺;水源频繁切换条件下,输配水质与管垢和生物膜的相互作用影响着铁腐蚀产物的释放过程。在稳定性低的管网中切换为强腐蚀性水时,铁腐蚀产物释放速率增加。基于对"黄水"产生机制的认识,提出了多水源切换管网黄水预防与控制技术,避免了2009—2012年间水源频繁切换所可能导致的"黄水"现象。更多还原

【Abstract】 South-to-North water diversion central line project enables the variety and complexity of water source for the intake area(s).The increasing complexity of factors affecting the water supply requires the higher adaptability of water treatment processes and distribution system.With Beijing and Zhengzhou as objects,this study focused on the problems in the drinking water system in the intake cities after that the south-tonorth water diversion central line project was enabled.Water source,water plant and distribution was systematically studied,which provides the techical support for the dringking-water security in the intake area(s),Water source from Danjiangkou Reservoir is suitable for the conventional treatment process in Beijing,with the effluent quailified by the "drinking water sanitary standard".Therefore,the conventional or enhanced conventional processes is a priority for new water plant(s) in the intake cities.Additionally,the reactions between the water and the biomembrane affected the release of corrosion products of iron.Highly corrosive water in the pipe with low stability led to an increase in the release of corrosion products of iron.Based on the mechanism of "red water" formation,the control technogy of "red water" during the water source swift was brought forward,avoiding the possibly resulted "red water" caused by the frequent swift of water source during 2009—2012.更多还原