空气氧化Fe^(2+)动力学及含铁污水处理技术研究  

Study on Fe^(2+) kinetics of air oxidation and treatment of sewage containing iron

作　　者：许佩华 刘波潮 刘雨文 慕朝[3] 高俊斌[3] 赵如松[3] XU Peihua;LIU Bochao;LIU Yuwen;MU Zhao;GAO Junbin;ZHAO Rusong(Beijing University of Chemical Technology,School of Chemical Engineering,Beijing 100029,China;ShengLi Oilfield Shandong Branch,Binnan Oil Production Plant,Binzhou 256600,Shandong,China;Beijing Institute of Petrochemical Technology School of Chemical Engineering,Beijing 102617,China)

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]胜利油田山东分公司滨南采油厂,山东滨州256600 [3]北京石油化工学院化学工程学院,北京102617

出　　处：《化学研究》2019年第1期76-84,共9页Chemical Research

基　　金：中石化多功能超细化污水处理技术攻关项目(315076)

摘　　要：从动力学角度研究空气氧化Fe^(2+)离子的化学反应机理,主要探究溶液矿化度、pH和曝气方式对Fe^(2+)氧化速率的影响,在40℃实验温度下建立动力学模型.实验表明,pH对处理含铁污水有重要作用.并通过模拟高含铁(c(Fe^(2+))≥100 mg/L)和含铁含HCO■两种常见油田酸性污水并做处理研究,得到处理含铁污水的可行方法.处理结果表明,对于高含铁污水可通过加碱方法改性,pH提高到9时Fe^(2+)含量接近0;含铁含HCO■污水可通过定量曝气比V_(G/L)方法将pH提高到预期范围,并利用溶解氧延迟氧化Fe^(2+),该氧化模式为二级动力学反应.Studying on the chemical reaction mechanism of air oxidating Fe^2+ from perspective of kinetics,we explored effect of salinity,pH and ways of aeration on oxidation rate of Fe^2+,and established kinetics model at 40 ℃.The results show that pH plays an important role in treating sewage containing Fe^2+.Rreasonable methods of eliminating Fe^2+ in sewage have been obtained by simulating and treating the sewage containing Fe^2+(c(Fe^2+)≥100 mg/L)and the other containing HCO3^- and Fe^2+.The sewage with 100 mg/L Fe^2+ or more can be treated by adding alkali to improve pH to 9.0 with close to 0 content of Fe^2+;the sewage containing HCO3^- and Fe^2+ can be treated by increasing pH to expected range with choosing rational VG/L,and Fe^2+ can be eliminated by oxidation of dissolved oxygen(DO),which belongs to secondary kinetic reaction.

关 键 词：FE^2+ HCO3^- 曝气 氧化动力学 酸性油田污水 

分 类 号：X791[环境科学与工程—环境工程]