ClO_2氧化法预处理联苯胺类染料中间体废水  

Pretreatment of Benzidine Dye Intermediate Wastewater by Chlorine Dioxide Oxidation Process

作　　者：曹向禹[1] 

机构地区：[1]齐齐哈尔大学轻工与纺织学院,黑龙江齐齐哈尔161006

出　　处：《化工环保》2013年第1期39-42,共4页Environmental Protection of Chemical Industry

基　　金：黑龙江省青年学术骨干支持计划项目(1252G071)

摘　　要：采用ClO2氧化法预处理联苯胺类染料中间体生产废水,探讨了影响COD和联苯胺去除率的主要因素,并采用GC/MS技术对ClO2氧化前后废水中的有机组分进行了分析。实验确定了较佳的工艺参数:ClO2加入量为45～55 mg/L,ClO2与联苯胺的化学计量比控制在(3.0～3.5)∶1,反应时间为30～35 min。在此条件下,ClO2氧化后出水中联苯胺去除率达到80%以上,联苯胺类污染物含量得到有效降低,废水BOD5/COD由原水的0.18提高到0.40。该方法能提高废水的可生化性,是一种较好的生化预处理技术。The wastewater in benzidine dye intermediate production was pretreated by C1O2 oxidation process. The factors affecting the removal rates of COD and benzidine were studied. The organic components in the wastewater before and after C1O2 oxidation were analyzed by GC/MS. The optimum process parameters are determined as follows： C102 dosage 45-55 mg/L, stoichiometric ratio of C1O2 to benzidine （3.0-3.5） ： 1 and reaction time 30-35 min. Under these conditions, the benzidine content is decreased effectively with above 80% of removal rate. The BOD5/COD of the wastewater is increased from 0.18 to 0.40. It indicates that the process is a good biochemical pretreatment process.

关 键 词：二氧化氯 联苯胺 染料中间体 氧化 废水处理 

分 类 号：X703[环境科学与工程—环境工程]