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化学需氧量和总有机碳在水质在线监测中的比较
Comparative Research of COD and TOC on On-line Water Quality Monitoring
投稿时间:2021-06-15  修订日期:2021-09-07
DOI:10.19316/j.issn.1002-6002.2021.06.22
中文关键词:  COD  TOC  水质监测  有机物  高氯离子  无机还原性物质
英文关键词:COD  TOC  water quality monitoring  organic matter  high-concentration Cl-  inorganic reductant
基金项目:
作者单位
冯端 北京市计量检测科学研究院, 北京 100029 
高晓晶* 中国环境保护产业协会, 北京 100037 
陈利娜 杭州绿洁环境科技股份有限公司, 浙江 杭州 310015 
张鑫 浙江环茂自控科技有限公司, 浙江 杭州 310007 
张国城 北京市计量检测科学研究院, 北京 100029 
杨艳 中国环境保护产业协会, 北京 100037 
马立学 中国环境保护产业协会, 北京 100037 
通讯作者:高晓晶*  中国环境保护产业协会, 北京 100037  
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中文摘要:
      化学需氧量(COD)和总有机碳(TOC)是定量表示水体受有机物污染的2个重要代表性指标。传统的COD在线监测方法在监测有机污染物方面存在一定的挑战,系统比较了COD和TOC在线监测方法在特殊水质中的应用。结果显示:TOC对难氧化有机物的氧化效率高达98%,高氯离子和无机还原性离子对TOC测量误差影响分别约为10%和7%。TOC可更直接、更准确地反映出水体受有机物污染的情况,最后对TOC指标在水质在线监测中的推广应用提出建议。
英文摘要:
      Both Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) are the two of most important indexes to quantitatively evaluate the level of water quality polluted by organic compounds.Due to the difficulty of the traditional method of COD on-line instrument in monitoring the organic pollutants in water,the application of COD and TOC on-line instrument in some special water was compared systematically.The results showed that the oxidation efficiency of organic matter that is hard to be oxidized by TOC was higher than 98%,and the measurement error of TOC in the present of high-concentration Cl- and inorganic reductant was about 10% and 7%.The degree of water polluted by organic matter can be more directly and accurately reflected by TOC.In the end,some suggestions were proposed to the application of TOC in on-line water quality inspection.
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