铁/炭微电解-Fenton氧化技术处理1,2,4-酸生产废水  

Treatment of 1,2,4-acid wastewater by ferric-carbon microelectrolysis combined with Fenton oxidation process

作　　者：原金海[1,2] 鲜学福[1] 雷菊[2] 

机构地区：[1]重庆大学资源与环境科学学院,重庆400044 [2]重庆科技学院化学化工学院,重庆401331

出　　处：《重庆大学学报（自然科学版）》2011年第9期121-127,共7页Journal of Chongqing University

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07315-005)

摘　　要：以6-硝(6-硝基-1,2-重氮氧基萘-4-磺酸)生产过程中产生的1,2,4-酸废水作为研究对象,将铁/炭微电解和Fenton氧化技术结合进行废水处理,研究了微电解的pH值、反应时间、反应温度、铁炭质量比、活性炭用量的影响以及Fenton氧化的pH值和H2O2用量,并进行了处理工艺的经济性分析。通过单因素实验确定1,2,4-酸废水处理的工艺条件为铁碳微电解的pH值为1时,铁碳质量比为3∶1,反应3h,过滤,调pH值为3,添加废水体积2.5%的H2O2(质量分数为30%),反应1h,电石渣调pH值7～8,过滤。该工艺对废水COD的去除率可提高到95%以上,废水处理成本5.4元/m3。Experiments on the treatment process of 1,2,4-acid wastewater combined ferric-carbon microelectrolysis with Fenton oxidation process are carried out.The 1,2,4-acid wastewater is produced in the production process of 6-nitry（6-nitro-1-diazo oxygen naphthalene-4-acid）.The experimental conditions of Ferric-Carbon microelectrolysis,including pH value,react time,react temperature,Fe/C ratio and dosage of active carbon are studied.Fenton oxidation conditions of pH value,dosage of H2O2 and the economy data of the process are analyzed.Through single-factor experiments,the conditions for treating acid wastewater are found out.pH value is 1,Fe and C mass ratio is 3∶1,and iron-carbon micro-electrolysis reaction time is 3 h.Filter the iron-carbon micro-electrolysis water to adjust its pH value into 3,and then adding 2.5% wastewater of H2O2 with mass fraction of 30 %,react at room temperature for 1 h,adjust the pH value into 7～8,and then filter the iron-carbon micro-electrolysis water.The removal efficiency of COD of raw water can be improved to more than 95%.The cost of wastewater treating is 5.4 yuan/m3.

关 键 词：1 2 4-酸废水 铁炭微电解 FENTON氧化 混凝 萘磺酸 

分 类 号：X788[环境科学与工程—环境工程]