供水管网余氯偏低的问题分析  

Analysis of low residual chlorine in water supply network

作　　者：李荣 胡建坤 陈文杰 张旭东 张学博 Li Rong;HuJiankun;ChenWenjie;ZhangXudong;ZhangXuebo(Tianjin Water Group Co. Ltd. ,Tianjin 300042,China;Tianjin Jinbin Veolia WaterCo Ltd. ,Tianjin 300300,China)

机构地区：[1]天津水务集团有限公司,天津300042 [2]天津津滨威立雅水业有限公司,天津300300

出　　处：《供水技术》2019年第1期31-34,49,共5页Water Technology

摘　　要：以天津某水厂为例,针对管网余氯偏低的情况,分析了水厂近3年加药量,出厂水和管网水余氯、氨氮、氯氨比,以及管网水亚硝酸盐的变化规律。对管网余氯和氨氮的相关性分析结果表明,两者之间有明显的正线性相关关系,在只增加出厂水余氯含量的情况下,由于管网中硝化反应的发生,使氨氮含量降低,从而导致管网余氯偏低。Taking a water plant in Tianjin as a case,for the issue of low concentration residual chlorine in water supply network,the variation regularity of chemical dosage,residual chlorine,ammonia nitrogen,ammonia to chloride ratio in both the treated water and pipe water,and nitrite in pipe water were analyzed during 2016 to 2018. It was found that there was a significant positive linear relationship between chlorine and ammonia nitrogen in pipe water. When only the residual chlorine content in the waterworks was increased,the ammonia nitrogen content in the pipe network was low due to nitrification reaction,which leads to the low residual chlorine in the pipe network.

关 键 词：氯胺 消毒 管网 余氯 氨氮 硝化反应 

分 类 号：TU991.33[建筑科学—市政工程]