油田土壤石油烃类污染物氧化降解性能研究  

Study on Oxidative Degradation Performance of Petroleum Hydrocarbon Pollutants in Oilfield Soil

作　　者：董健[1] 代红波 寇恒治 DONG Jian;DAI Hongbo;KOU Hengzhi(Petroleum Engineering Corporation,SINOPEC;College of Chemical Engineering,China University of Petroleum(East China);Luliang Oilfield Operation Area of Xinjiang Oilfield Company,CNPC)

机构地区：[1]中石化石油工程设计有限公司 [2]中国石油大学(华东)化工学院 [3]中石油新疆油田公司陆梁油田作业区

出　　处：《油气田地面工程》2021年第11期13-17,共5页Oil-Gas Field Surface Engineering

摘　　要：为了对高浓度石油污染土壤的化学修复技术进行深入研究,分别考察了芬顿氧化体系和过硫酸钠氧化体系对模拟石油污染土壤中的石油烃类污染物的氧化降解,探究了不同降解条件对污染物去除效率的影响规律。通过实验结果发现,氧化剂的添加方式、添加顺序、反应体系pH值、反应时间等多种因素均会对土壤中石油烃去除率造成影响。两种体系中,芬顿体系氧化效果最佳,在pH=3、n(H_(2)O_(2))/n(Fe^(2+))=6的条件下,对模拟石油污染土壤中石油烃去除率最高可达46%。该研究为油田土壤的修复处理提供了理论支持。To further investigate the chemical remediation technology of high concentration petro-leum-contaminated soil,the oxidation degradation of petroleum hydrocarbon pollutants in simulated petroleum-contaminated soil by Fenton oxidation system and sodium persulfate oxidation system are in-vestigated respectively,and the influence of different degradation conditions on the removal efficiency of pollutants is explored in detail.Experimental results show that various factors,such as the way and se-quence of adding oxidant,pH value of the reaction system,and reaction time,can affect the removal rate of petroleum hydrocarbon in soil.Among the two systems,the Fenton system has a better oxida-tion effect,under the condition of pH=3 and n(H_(2)O_(2))/n(Fe^(2+))=6,the removal rate of petroleum hy-drocarbons in simulated petroleum-contaminated soil can reach up to 46%.This study provides a theo-retical support for the remediation of oilfield soil.

关 键 词：土壤修复 芬顿氧化体系 过硫酸钠氧化体系 石油烃 降解 

分 类 号：X53[环境科学与工程—环境工程]