摘要
环境监测中常采用重铬酸钾法(CODCr)分析水样COD,因使用了大量H2SO4、Ag2SO4、HgSO4和K2Cr2O7,而产生了强酸型多元重金属污染废液,其中含有难降解有机物及Ag+、Hg2+、Cr3+、Cr6+等有毒重金属,废硫酸浓度高达30%。采用综合处理的方法去除废液中的有毒重金属,确保废水中重金属含量达标。
Potassium dichromate method (CODCr) is often used in environmental monitoring to analyze COD in water samples. The waste solution produced by using a large number of H2SO4, Ag2SO4, HgSO4 and K2Cr2O7 is a strong acidic multi-metal pollution waste liquid, which contains refractory organics, toxic heavy metals such as Ag+, Hg2+, Cr3+ and Cr6+, and the concentration of waste sulfuric acid is as high as 30%, A comprehensive treatment method was used to remove the toxic heavy metals from the waste liquid, thus the content of heavy metals in the wastewater reaches the standard.
作者
葛常艳
闫文斌
Ge Changyan;Yan Wenbin(Hengshui Ruitao Environmental Protection Technology Corporation Ltd., Hengshui 053000, China)
出处
《煤炭与化工》
CAS
2019年第7期146-149,共4页
Coal and Chemical Industry
关键词
在线检测废液
有毒重金属
废液
on-line detection of waste liquid
toxic heavy metal
waste liquid
