海水淡化水在既有管网中的水质变化研究  

Water Quality Change of Desalinated Seawater in Existing Water Distribution Systems

作　　者：骆碧君[1] 刘志强[1] 郑毅[1,2] 李振中[1] 韩丹[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]天津金融城开发有限公司,天津300040

出　　处：《中国给水排水》2009年第23期57-60,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07317-005);国家科技支撑计划项目(2006BAJ03A10-08)

摘　　要：通过在实验室搭建小型管网,模拟了自来水及海水淡化水在已有市政管网中的输配过程,并选取pH、碱度、Langelier饱和指数和Ryznar指数作为控制指标来评价其化学稳定性。结果表明,海水淡化水的碱度极低,具有不饱和性(Langelier饱和指数为-3.25)和强腐蚀倾向(Ryznar指数为13.92),即化学不稳定性,进入既有管网后易溶解原先积存的管垢,并加速金属管道内壁腐蚀。In the laboratory,a small-scale pipe network was set up to simulate the distribution process of tap water and desalinated seawater in existing municipal pipe networks. The pH,alkalinity,Langelier saturation index and Ryznar index were chosen as the evaluation indexes of chemical instability. The results show that the desalinated seawater is chemically instable,since its alkalinity is much lower than the tape water,and it is non-saturated (Langelier saturation index of -3.25) and strong corrosive (Ryznar ind...

关 键 词：海水淡化水 供水管网 管垢 腐蚀 

分 类 号：TU991.33[建筑科学—市政工程]