摘要
采用氯气校正法和碘化钾-碱性高锰酸钾法分别测定高氯废水的COD值。从测定原理、消除效果及适用范围等方面对两种标准方法进行了对比,并对选出的适用方法进行了实践应用。结果表明氯气校正法可以有效地消除氯离子的干扰,可获得较为准确的COD测定值。
The COD value of the high-chlorine wastewater was determined by chlorine gas calibration method and potassium iodide-basic potassium permanganate method. The two standard methods were compared in terms of measurement principle, elimination effect and scope of application,and the selected applicable methods were applied in practice. The results show that the chlorine calibration method can effectively eliminate the interference of chloride ions and obtain more accurate COD measurement values.
引文
[1]张月,简淼夫. COD测定中氯离子干扰的消除方法[J].工业用水与废水, 2004(4):55-57.
[2] HJ/T 132-2003,高氯废水化学需氧量的测定碘化钾碱性高锰酸钾法[S].
[3] HJ/T 70-2001,高氯废水化学需氧量的测定氯气校正法[S].