COD反应动力学及COD快速测定的实验研究

EXPERIMENT ON THE KINETICS OF COD REACTION AND ITS RAPID MEASUREMENT

本文利用酒糟废水,通过实验证明了重铬酸钾回流法测定COD的回流反应属一级反应,并求出了反应速度常数,从而建立了COD快速测定的动力学方法。15min回流快速测定与常规2h回流测定实验数据的相对误差在5％左右。

In this paper, the first-order reaction of COD meastirement was proved by the experiment of K_2CrO_4 reflux using winery wastewater. The reaction ratio constant K was calculated. And the method of COD rapid measurement was established. The relative error of 15 minutes and 2 hours COD measurement was about 5％.