摘要
采用微电解Fenton法处理硫铵酯-苯甲羟肟酸-苯胺黑有机废水。考察了初始pH值、铁屑及活性炭投入量、曝气量、H2O2用量、催化剂MnO2加入量和反应时间对废水COD、NH3-N和色度去除率的影响。最佳条件为:初始pH=3、铁屑用量70 g/L、活性炭用量80 g/L、H2O2用量7 mg/L、MnO2用量8.0 g/L、曝气量500 mL/(min·L)、反应时间20 min,此时废水COD、NH3-N和色度的去除率达88.21%、93.57%和98.68%。通过多因素正交实验确定了影响COD、NH3-N和色度去除率的因素强弱顺序为:铁屑投入量=活性炭投入量>H2O2用量>pH值>MnO2用量。
The organic wastewater containing ammonium thiosulfate-benzhydroxamic acid-aniline black was treated by using microelectrolysis-Fenton process.The effects of initial pH value,amount of iron scraps and activated carbon,volume of aeration,H2O2 dosage,amount of catalyst MnO2,as well as reaction time on removal rates of COD,NH3-N and chroma in wastewater were investigated.It is found that under the following optimal conditions,including an initial pH value of 3,70 g/L of iron scraps,80 g/L of activated carbon,7 mg/L of H2O2,8.0 g/L of MnO2,aeration at 500 mL/(min·L)and 20-min reaction time,the removal rates of COD,NH3-N and chromaticity in wastewater are 88.21%,93.57% and 98.68%,respectively.A multi-factor orthogonal experiment was then performed to determine the order of factors affecting removal rates of COD,NH3-N and chroma,which is shown in the following order:iron scraps input=activated carbon input>H2O2 volume>pH value>MnO2 dosage.
作者
孙磊
吴江求
曹学锋
王成文
SUN Lei;WU Jiang-qiu;CAO Xue-feng;WANG Cheng-wen(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2020年第1期101-104,113,共5页
Mining and Metallurgical Engineering
基金
国家自然科学基金(51904338)
关键词
碳铁微电解
FENTON
废水处理
有机废水
化学需氧量
氨氮废水
色度
carbon-iron microelectrolysis
Fenton
wastewater treatment
organic wastewater
chemical oxygen demand
ammonia-nitrogen wastewater
chroma
