自来水系统中游离氯检测器的评价  

Evaluation of Chlorine Sensors in Tap Water System

作　　者：李伟英[1] 张明[2] 张永吉[1] 董秉直[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]同济大学长江水环境教育部重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2008年第7期946-950,共5页Journal of Tongji University:Natural Science

基　　金：国家"十一五"科技支撑计划"小城镇饮用水安全保障关键技术研究"资助项目(2006BAJ08B02);上海市科委重大项目"崇明典型环岛运河沙道综合整治技术研究与示范"(07DZ12052)

摘　　要：本试验采用2种氯测定仪(Cifec和Seres)连续在线检测水中的游离余氯(Cl2+HClO+ClO-)和游离有效余氯(HClO),所有检测数据均与采用DPD法在555 nm得到的不同质量浓度的次氯酸钠标准曲线进行检验.实验结果表明,氯测定仪可以连续便捷测定自来水中的游离余氯量,这对于水厂处理系统实现全自动化运行及其控制氯投加量有着深远的意义.Two types of active chlorine sensors（Cifec and Seres）incorporated with pH sensor were applied to the measurement of active residual chlorine（HClO） and free residual chlorine （Cl2 ＋ HClO ＋ ClO- ）contained in tap water. All the obtained data were then evaluated with a standard curve of concentration of sodium hypochlorite（as Cl2 mg@L^-1）which was prepared by N, N-diethyl-p-phenylenediamine（DPD）method with spectrophotometer at 555 nm. Both Cifec and Seres can provide the active ＆ free residual chlorine accurately within their detection limits and detect chlorine concentration on-line in the tap water. It is useful for automatic determination of the residual chlorine at water treatment plant in the future.

关 键 词：氯消毒 DPD比色法 游离氯测定仪 游离余氯 

分 类 号：TU991.21[建筑科学—市政工程]