供水系统中水垢形成机理探讨  

Discussion on Mechanism of Scales in Water Distribution System

作　　者：李正印 刘志攀 何智勇 

机构地区：[1]广州市自来水公司,广东广州510160

出　　处：《广东化工》2008年第9期112-113,128,共3页Guangdong Chemical Industry

摘　　要：当前城市供水系统的水质,相对而言净水厂出厂的水较好,而经过管网输送后用户龙头出的水较差。红水、黑水现象经常困扰各城市的供水企业,对此用户十分反感,甚至对自来水的信誉产生了质疑。文章归纳了管道内结垢层的形成原因,并分别对其机理进行探讨分析,最终得出保证出厂水低浊度、低钙镁铁离子含量、偏弱碱性,使用有防腐衬里的管材,合理调度以保证输配水管内的水流速度,能够有效防止结垢层形成的结论。Currently in water distribution system, the water quality of treated water is comparatively better than that after transported by pipelines. Water supply corporations is feazed by redwater even blackwater, users rebel for that, they even have suspicious with the watersupply corporations. The paper concluded the mechanism of scales, then discussed them separatly. In the end the author concluded that it can prevent the scales if the treated water had low turbidness, low concentration of calcium , magnesium and iron, ratherish alkalescence, used pipe lined, rational operated to make sure the current velocity in the pipelines.

关 键 词：结垢 腐蚀 电化学反应 微腐蚀电池 

分 类 号：O611.65[理学—无机化学]