Fe/C微电解-Fenton氧化-混凝沉淀-生化法处理染料母液废水  

Treatment of mother liquor of dyeing wastewater with Fe/C electrolysis Fenton oxidation-coagulation sedimentation-biochemical process

作　　者：任健[1] 马宏瑞[1] 王宝和[2] 焦文娟[2] 

机构地区：[1]陕西科技大学资源与环境学院,西安710021 [2]陕西科技大学化工学院,西安710021

出　　处：《环境工程学报》2010年第7期1457-1462,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(40522024);浙江省重大科技攻关项目(2004C1104)

摘　　要：采用Fe/C微电解-Fenton氧化-混凝沉淀-生物接触氧化法处理强酸性染料生产母液废水。结果表明,组合工艺对该强酸性母液废水具有理想的处理效果。在铁炭处理单元,当铁炭比为2.5∶1,曝气量为90 L/h,HRT=80 min时,单级色度和COD去除率分别为77.2%和48.7%,BOD5/COD升高至0.30;Fenton氧化处理单元,当30%H2O2投加量为3 mL/L,pH=3.5,HRT=80 min时,单级色度和COD去除率分别为83.6%和77.4%,BOD5/COD升高至0.48。再经过混凝沉淀和生物接触氧化处理后,废水的色度和COD总去除率可分别高于99.8%和99.2%。The mother liquor of dyeing wastewater was treated by the joint process of ferric-carbon electrolysis-Fenton oxidation-coagulation sedimentation-biological contact oxidation.The results of the tests showed that the combined process had high removal efficiency on the treatment of strong acid mother liquor of dyeing wastewater.In the ferric-carbon microelectrolysis unit,the colority and COD removal rates were 77.2% and 48.7%,respectively,the value of BOD5/COD could reach 0.30 when the the volume ratio of ferric to carbon was 2.5∶1,the aeration rate was 90 L/h,the HRT was 80 min.In the Fenton oxidation unit,the colority and COD removal rates were 83.6% and 77.4%,respectively,the value of BOD5/COD could reach 0.48 when the dosing quantity of 30% H2O2 was 3 mL/L,pH was 3.5,HRT was 80 min.In the end,after the coagulation sedimentation and biological contact oxidation process,the total removal rates of colority and COD were above 99.8% and 99.2%,respectively.

关 键 词：FE/C微电解 FENTON氧化 生物接触氧化 染料废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]