摩尔法测定蒸氨废水中氯离子含量的改进  

Revamping of Measurement of Cl^- in Distilled Ammonia Wastewater by Molar Method

作　　者：鲁帅 毕雅梅 张洪恩 艾护民 李红超 彭亚伟 余远航 

机构地区：[1]河南中鸿集团煤化有限公司,河南平顶山467045

出　　处：《煤化工》2016年第5期78-80,共3页Coal Chemical Industry

摘　　要：煤化工生产中蒸氨废水色度大、杂质多,传统的摩尔法不能直接滴定其中的Cl^-含量,为此,针对Cl^-测定中的各种干扰因素,首先采用企业内部的干熄焦焦末吸附脱色,使COD去除率达到88%;然后通过酸性环境、碱性环境等的深度处理,除去其中的无机干扰离子,最后采用摩尔法测定Cl^-,测定误差4.69%。通过对蒸氨废水的处理,再采用摩尔法可较为准确的滴定蒸氨废水中Cl^-,此法可扩展至生化二沉池水及最终出水的Cl^-含量测定。Cl^- could not be titrated directly with traditional molar method because of the dark color and many impurities of distilled ammonia wastewater in the coal chemical production. With respect to different interfering factors in Clmeasurement, firstly the coke breeze of CDQ inside the company to adsorb and decolor wastewater was employed. The removal rate of the COD reached as high as 88%. Then through deep processing in the acidic and alkaline environment, the inorganic interfering ions of wastewater were removed. Finally, Cl^- was measured by molar method with 4.69% measurement error. After the treatment of distilled ammonia wastewater, Cl^- of the distilled ammonia wastewater could be accurately titrated by molar method, and the method was also applicable for Cl^- measurement of secondary effluent or final effluent in the biochemical tank.

关 键 词：摩尔法 蒸氨废水 Cl^- 焦末吸附 深度处理 

分 类 号：X832[环境科学与工程—环境工程] X784