针对南水北调通水后北方受水区城市水源切换引起铁释放的问题,通过阐述管网腐蚀机理,重点从水质条件和水力条件分析了水源切换过程中影响水质稳定性的因素。在此基础上,从管网管理、管网改造与维护、管网水质调节技术三方面,提出了水源切换引起管网铁释放的控制措施和建议。 Aiming at the problem of iron release caused by urban water source switching in the water receiving area of ​​the North China after the water diversion from the North Water Diversion Project, the factors influencing the water quality stability during water source switching were analyzed emphatically based on the water quality and hydraulic conditions. On this basis, from the aspects of pipe network management, pipe network reconstruction and maintenance, and pipe network water quality adjustment technology, the paper puts forward control measures and suggestions on iron release caused by water source switching.