环氧丙烷/氯丙烷废水中COD的测定研究

STUDY ON DETERMINATION OF COD IN EPOXYPROPANE/CHLOROPROPANE WASTEWATER

对传统的高氯废水COD检测方法进行了改进。通过加入过量氧化剂以氧化废水中有机物和离子,实现无汞盐测定并减少贵金属Ag的用量。然后在平行条件下,加入相同量的Cl-作空白,以标准溶液的COD为基准来计算废水试样中COD的含量。该方法检测准确、毒性低、耗资少。

The traditional method of detecting COD in high chlorine wastewater was modified. Excessive antioxidant was added to oxidate the organism and ions in the wastewater to realize the determination without mercuric salt and decrease the addition of precious metal Ag. Then in the parallel conditions,the same amount of Cl-was aded as blank test,the COD in standard solution was taken as the benchmark to calculate COD content in the wastewater sample.The method is accuracy,low toxicity and less cost.