一种低成本高精度COD在线分析仪设计方案  

A Low-Cost High Precision COD Online Analysis Instrument Design Scheme

作　　者：白泽霖 宁可 BAI Zelin;NING Ke(Technology Center of Chongqing Chuanyi Automation Co.,Ltd.,Chongqing 400000,China)

机构地区：[1]重庆川仪自动化股份有限公司技术中心,重庆400000

出　　处：《自动化应用》2023年第3期101-104,共4页Automation Application

摘　　要：该COD在线分析仪采用重珞酸钾氧化-快速消解分光光度法检测原理:经预处理的水样在高温高压封闭条件下被重洛酸钾氧化消解,再经过光度检测,完成COD浓度的快速测定。仪器采用的测量方法符合《水质化学需氧量的测定重洛酸盐法》和《水质化学需氧量的测定快速消解分光光度法》的标准要求。该款污水COD速测仪性能稳定、维护量小。The COD online analyzer adopts the principle of potassium dichromate oxidation-fast digestion spectrophotometry.The pretreated water samples were oxidized and digested by potassium dichromate under the closed condition of high temperature and high pressure,and then the COD concentration was rapidly determined by photometric detection.The measurement method adopted by the instrument conforms to the standard requirements of'water chemical oxygen demand determination dichromate method"and"water chemical oxygen demand determination fast digestion spectrophotometry".This kind of sewage COD speed measuring instrument has stable performance and low maintenance.

关 键 词：化学需氧量 吸光度 消解时间 高精度注射泵 分析仪 

分 类 号：X853[环境科学与工程—环境工程]