空气氧化Fe~(2+)动力学及含铁污水处理技术研究

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英文篇名：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 ; 高俊斌 ; 赵如松 英文作者：XU Peihua;LIU Bochao;LIU Yuwen;MU Zhao;GAO Junbin;ZHAO Rusong;Beijing University of Chemical Technology, School of Chemical Engineering;ShengLi Oilfield Shandong Branch,Binnan Oil Production Plant;Beijing Institute of Petrochemical Technology School of Chemical Engineering; 关键词：Fe~(2+) ; HCO_3~- ; 曝气 ; 氧化动力学 ; 酸性油田污水 英文关键词：Fe~(2+);;HCO_3~-;;aeration;;oxidation kinetics;;acid oil field sewage 中文刊名：HXYA 英文刊名：Chemical Research 机构：北京化工大学化学工程学院;胜利油田山东分公司滨南采油厂;北京石油化工学院化学工程学院; 出版日期：2019-01-25 出版单位：化学研究 年：2019 期：v.30 基金：中石化多功能超细化污水处理技术攻关项目(315076) 语种：中文; 页：HXYA201901011 页数：9 CN：01 ISSN：41-1083/O6 分类号：80-88

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 HCO■ 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 HCO■ and Fe~(2+) can be treated by increasing pH to expected range with choosing rational V_(G/L), and Fe~(2+) can be eliminated by oxidation of dissolved oxygen(DO), which belongs to secondary kinetic reaction.

引文

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