胜利孤岛油区石油污染土壤芬顿氧化处理研究

Study on Fenton Oxidation Treatment of Petroleum Contaminated Soil in Shengli Gudao Oil Region

本文采用芬顿体系作为降解修复的氧化体系,对模拟胜利孤岛油区石油污染土壤中石油烃污染物进行氧化降解,探究了土壤介质pH、反应时间等多种因素对降解效果的影响。研究表明,芬顿氧化最优条件为pH=3、n(H_(2)O_(2)/Fe^(2+))=6,对模拟石油污染土壤中石油烃去除率最高可达46%,对实际污染土壤石油烃去除率为27%。氧化后的油土中,有机大分子得到有效降解,沥青质、胶质含量明显减少;氢碳原子比增大,不饱和程度降低,支化度降低,芳碳率降低。

The Fenton system,as an oxidation system for degradation and remediation,oxidatively degrades petroleum hydrocarbon pollutants in Sheng li Gu Dao Oil Region petroleum-contaminated soil.The effect of various factors such as pH,and reaction time on the degradation effect is studied.Studies have shown that the optimal conditions are pH=3,n(H_(2)O_(2)/Fe^(2+))=6,and the removal rate of simulated petroleum contaminated soil can reach up to 46%.The removal rate of petroleum hydrocarbons from the actual polluted soil is 27%.In the oxidized oil soil,organic macromolecules are effectively degraded,and the content of asphaltenes and gums is significantly reduced;the hydrogen-carbon atom ratio increases,the degree of unsaturation decreases,the degree of branching decreases,and the aromatic carbon ratio decreases.