摘要
化学需氧量是评价焦化废水水体中有机物污染的重要指标,通常采用COD_(Cr)来表示,在其测定过程中氯离子是影响结果准确性的重要因素。焦化废水为高氯废水,研究焦化废水检测中COD_(Cr)的测定,指出掩蔽剂硫酸汞由固体改为溶液后,加入量的为m(HgSO_(4)):m(Cl^(-))为25:1时,掩蔽氯离子干扰效果能达到最好。在保证准确性的前提下,降低硫酸汞的加入量,减少环境污染。
Chemical oxygen demand is an important index to evaluate the organic pollution in coking wastewater,which is usually expressed by COD_(Cr).Chloride ion is an important factor affecting the accuracy of the results in the determination process.Coking wastewater is high chlorine wastewater.The determination of COD_(Cr) in coking wastewater detection is studied.It is pointed out that when the masking agent mercury sulfate is changed from solid to solution,and the addition amount is m(HgSO_(4)):m(Cl^(-))is 25:1,the masking effect of chloride ion interference can reach the best.On the premise of ensuring accuracy,reduce the addition of mercury sulfate and reduce environmental pollution.
作者
王晓龙
李培
范军良
赵小虎
杨大流
Wang Xiaolong;Li Pei;Fan Junliang;Zhao Xiaohu;Yang Daliu(Tangshan Shougang Jingtang Xishan Coking Co.,Ltd.,Tangshan 063200,China;Jiangsu Shagang Group Huaigang Special Steel Co.,Ltd.,Huai'an 223002,China)
出处
《冶金标准化与质量》
2022年第5期20-22,共3页
Metallurgical Standardization & Quality
关键词
焦化废水
化学需氧量
氯离子
硫酸汞
coking wastewater
chemical oxygen demand
chloride ion
mercury sulfate