给水管网细菌再生长可能机制及影响因素分析  

The Potential Mechanism and Influence Factors of Bacterial Regrowth in Drinking Water Distribution System

作　　者：贾琳 周青 刘杨 

机构地区：[1]宣教中心环保局,河北石家庄050000 [2]监测中心环保局,河北石家庄050000 [3]供热管理中心建设局,河北石家庄050000

出　　处：《广东化工》2012年第10期198-198,197,共2页Guangdong Chemical Industry

摘　　要：给水管网中细菌再生长是管道的表面性质和流体流速特点及细菌对贫养环境的适应造成的。其主要影响因素包括：余氯量、可同化尊机喳（AOC）、管材及管道特征等。余氯量是控制细菌再生长的关键因素：AOC是管网水中细菌生长潜力的首要指标；当水中的磷为l～3μg/L甚至低于1μg/L时，磷就成为管网水中细菌再生长的主要限制因素。Bacterial regrowth in drinking water distribution system is caused by superficial property of pipes, the characteristics of velocity of flow and the adoption of the bacterial to the deficient nutrition condition. The factors affect the regrowth include： chlorine residual, AOC, the material and character of pipes, and so on. Chlorine residual is the key fact to control the regrowth; AOC is the first index to assess the potential of the bacterial rcgrowth; When the phosphorus in water was between 1 μg/L to 3 Iμg/L, or even under 1μg/L, phosphorus became the main limiting factor of the bacterial regrowth.

关 键 词：饮用水管网 细菌再生长 AOC 余氯量 磷 

分 类 号：TU991.33[建筑科学—市政工程]