摘要
本试验采用重铬酸钾标准法对COD测定结果的影响程度与适用范围进行了探索,提出了用低浓度重铬酸钾氧化法测定含高氯根废水中低COD的方法,对其影响因素提出新的看法。试验结果表明:对影响测定结果的主要因素并不取决于Cl-浓度的高低,而取决于回流后剩余氧化剂量的多少,当剩余氧化剂量不超过46%时,对测定结果影响甚微。
In the experiment, the study on result of measurement of COD by potassium dichromate method has been conducted in the aspect of impact and application scope, proposing the method of measuring low COD in waste water of high chlorine and putting forward new comment on its influence factor. The result of experiment shows that major factors influencing result of measurement are not subject to concentration of CL-, and depend on residual volume of oxidant after circumfluence. While the volume of residual oxidant is no more than 46%, the impact on the result of measurement is tiny.
出处
《油气田环境保护》
CAS
2002年第3期22-25,共4页
Environmental Protection of Oil & Gas Fields
关键词
氯离子
化学需氧量
低浓度
重铬酸钾法
废水
chlorine ion, chemical oxygen demand, low concentration, potassium dichromate method
