Abstract:

The study on the analytical methods of the COD in wastewater containing chloride ions is one of the hotspot in present environmental monitoring. Different reports have different applied effects. The analytical methods of the COD in the wastewater containing chloride ions have been studied preliminarily. The analytical methods with different COD and different chloride ion concentrations have been compared. The advantages and disadvantages of them have been analyzed. The results show that the silver nitrate titration is the best, and suitable for wider application.

Key words: chemical oxygen demand, chloride ions, silver nitrate titration

摘要：

含氯离子废水化学需氧量的分析方法的研究是当前环境监测研究的热点之一,各种文献报道也较多,但各自使用的效果不一。采用试验的方法对含氯离子废水中CODCr的分析进行了初步研究,比较了硫酸汞加入法、稀释法、硝酸银滴定法、氯气校正法、氯离子校正法等方法在不同化学需氧量不同氯离子浓度下的分析结果,利用分析结果与配置的标准溶液浓度相比较,分析了各种方法的优缺点,结果表明硝酸银滴定法是比较理想的适应范围较广的方法。

关键词: 化学需氧量, 氯离子, 硝酸银滴定法

CLC Number: 

• X832