浅析火电厂脱硫废水COD测定策略

Analysis of COD determination strategy for desulfurization wastewater in thermal power plants

分析讨论了脱硫废水COD在氯离子的干扰下的检测方法。常用的COD检测方法有两种,分别是重铬酸钾法和高锰酸钾法,这两种方法在氯离子的干扰下不能准确的测出COD值,所以我们要采用一种方法来控制氯离子的含量,确保它对检测COD工作的影响降到最低,最终得到一个准确的COD值。

This article analyzes and discusses the detection method of desulphurization wastewater COD under the interference of chlorine ions.There are two commonly used COD detection methods:potassium dichromate method and potassium permanganate method.These two methods can not accurately measure the COD value under the interference of chloride ions.So we need to adopt a method to control the content of chloride ions to ensure that its impact on the detection of COD is minimized,and finally get an accurate COD value.