印染废水为主的污水COD快速测定方法的研究

Study on the rapid determination of COD in the sewage mainly containing printing and dyeing wastewater

针对COD的国标检测方法重铬酸盐法存在分析成本高、时间长、易造成二次污染等问题,通过对快速消解分光光度法、烘箱法、COD快速测定仪3种方法进行检测试验,找出适合某污水处理厂污水的COD快速测定法。结果表明,快速消解分光光度法克服了国标法的缺点,并得到了与国标2 h回流方法等效的COD监测结果。

In view of the existing problems of high analysis cost,long time and easy to make two pollution during determining COD by the national standard detection method,dichromate method.The test of these methos which are rapid digestion spectrophotometric method,oven method and COD rapid was carried out to find a fast COD method for the wastewater treatment of a sewage treatment plant.The results show that the fast digestion spectrophotometry overcomes the shortcomings of the national standard method and obtains the COD monitoring result equivalent to the national standard 2 h reflux method.