曾琳1,
蒋国斌1,
陈炜鸣1,
李启彬1
1.西南交通大学地球科学与环境工程学院,成都 610031
基金项目: 特种废水处理四川省高校重点实验室开放课题(SWWT2015-4)
Influencing factors and pollutants removal mechanism of remediation petroleum-contaminated soil using aged refuse
YE Zhicheng1,,ZENG Lin1,
JIANG Guobin1,
CHEN Weiming1,
LI Qibin1
1.College of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031, China
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摘要:利用矿化垃圾对石油污染土壤进行修复研究,以期在低成本、易操作、修复效果好的前提下达到以废治废的目的。分别研究了矿化垃圾与石油污染土壤的混合比例、土壤含盐量、含油量和含水率对矿化垃圾修复石油污染土壤的影响,并通过3D-EEM(三维荧光)和GC-MS(气相-质谱)技术分析了体系石油污染物的去除特性。结果表明:矿化垃圾对石油污染土壤具有较好的修复效果,在矿化垃圾与石油污染土壤的混合比例为6:4、土壤不添加盐分、含油量为4%、含水率为30%的条件下,运行94 d后土壤中石油去除率最高可达58.61%;同时,基于3D-EEM分析发现土壤中石油类物质的荧光峰位置在处理前后均出现在Ex/Em=300 nm/330 nm处,其去除率为44.89%,表明矿化垃圾床对三环及其同系物和单环及其同系物的芳烃去除效果较好;另外,基于GC-MS技术分析得出,经矿化垃圾修复后,土壤中石油总去除率为66.57%,除正十八烷去除率(19.84%)较低外,其他烷烃的去除率均高于56.8%。
关键词: 矿化垃圾/
石油污染土壤/
影响因素/
去除特性
Abstract:The mineralized refuse bioreactor was used to study the remediation of petroleum-contaminated soil in order to achieve the aim of waste control by waste under the premise of low cost, easy operation and good remediation effect. The effects of mixing ratio, salt content, petroleum content of soil, and water content on the remediation of petroleum-contaminated soil were studied. The removal characteristics of petroleum pollutants were illustrated by 3D-EEM and GC-MS,respectively. The results show that the mineralized refuse bioreactor has a good remediation effect on the petroleum pollution of the soil. Under the condition of mixing proportion being 6:4, not adding salt and surfactant, not flipping the soil, petroleum content of 4% and water content of 30%, the petroleum removal rate reached up to 58.61% after 94 d operation. On the one hand, the fluorescence peak position before and after treatment appeared at Ex/Em=300 nm/330 nm, and the removal rate was 44.89%, showing that the mineralized refuse bioreactor has a good remediation effect on the tricyclic and monocyclic aromatic hydrocarbons. On the other hand, the total removal rate of petroleum after remediation was 66.57%.The removal rate of other alkanes was above 56.8% except that n-octadecane’s is lower (19.84%).
Key words:aged refuse/
petroleum contaminated soil/
influencing factors/
removal characteristics.
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矿化垃圾修复石油污染土壤的影响因素及污染物的去除机制
叶志成1,,曾琳1,
蒋国斌1,
陈炜鸣1,
李启彬1
1.西南交通大学地球科学与环境工程学院,成都 610031
基金项目: 特种废水处理四川省高校重点实验室开放课题(SWWT2015-4)
关键词: 矿化垃圾/
石油污染土壤/
影响因素/
去除特性
摘要:利用矿化垃圾对石油污染土壤进行修复研究,以期在低成本、易操作、修复效果好的前提下达到以废治废的目的。分别研究了矿化垃圾与石油污染土壤的混合比例、土壤含盐量、含油量和含水率对矿化垃圾修复石油污染土壤的影响,并通过3D-EEM(三维荧光)和GC-MS(气相-质谱)技术分析了体系石油污染物的去除特性。结果表明:矿化垃圾对石油污染土壤具有较好的修复效果,在矿化垃圾与石油污染土壤的混合比例为6:4、土壤不添加盐分、含油量为4%、含水率为30%的条件下,运行94 d后土壤中石油去除率最高可达58.61%;同时,基于3D-EEM分析发现土壤中石油类物质的荧光峰位置在处理前后均出现在Ex/Em=300 nm/330 nm处,其去除率为44.89%,表明矿化垃圾床对三环及其同系物和单环及其同系物的芳烃去除效果较好;另外,基于GC-MS技术分析得出,经矿化垃圾修复后,土壤中石油总去除率为66.57%,除正十八烷去除率(19.84%)较低外,其他烷烃的去除率均高于56.8%。
English Abstract
Influencing factors and pollutants removal mechanism of remediation petroleum-contaminated soil using aged refuse
YE Zhicheng1,,ZENG Lin1,
JIANG Guobin1,
CHEN Weiming1,
LI Qibin1
1.College of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031, China
Keywords: aged refuse/
petroleum contaminated soil/
influencing factors/
removal characteristics
Abstract:The mineralized refuse bioreactor was used to study the remediation of petroleum-contaminated soil in order to achieve the aim of waste control by waste under the premise of low cost, easy operation and good remediation effect. The effects of mixing ratio, salt content, petroleum content of soil, and water content on the remediation of petroleum-contaminated soil were studied. The removal characteristics of petroleum pollutants were illustrated by 3D-EEM and GC-MS,respectively. The results show that the mineralized refuse bioreactor has a good remediation effect on the petroleum pollution of the soil. Under the condition of mixing proportion being 6:4, not adding salt and surfactant, not flipping the soil, petroleum content of 4% and water content of 30%, the petroleum removal rate reached up to 58.61% after 94 d operation. On the one hand, the fluorescence peak position before and after treatment appeared at Ex/Em=300 nm/330 nm, and the removal rate was 44.89%, showing that the mineralized refuse bioreactor has a good remediation effect on the tricyclic and monocyclic aromatic hydrocarbons. On the other hand, the total removal rate of petroleum after remediation was 66.57%.The removal rate of other alkanes was above 56.8% except that n-octadecane’s is lower (19.84%).