石油炼制与化工 ›› 2025, Vol. 56 ›› Issue (1): 138-145.

• 节能减排 • 上一篇    下一篇

热强化气相抽提联合微生物降解技术在加油站场地修复中的应用

杨玉敏1,何庆生1,张秀霞2,麻微微3,李石2   

  1. 1. 中石化炼化工程(集团)股份有限公司洛阳技术研发中心
    2. 中国石油大学(华东)化学化工学院
    3. 青岛理工大学环境与市政工程学院
  • 收稿日期:2024-06-27 修回日期:2024-09-13 出版日期:2025-01-12 发布日期:2024-12-27
  • 通讯作者: 何庆生 E-mail:luckqs@163.com
  • 基金资助:
    石油烃污染土壤和地下水修复技术研究

APPLICATION OF THERMALLY ENHANCED SOIL VAPOR EXTRACTION COMBINED WITH MICROBIAL DEGRADATION TECHNOLOGY FOR THE GAS STATION FIELD REMEDIATION


  • Received:2024-06-27 Revised:2024-09-13 Online:2025-01-12 Published:2024-12-27

摘要: 以某加油站石油烃污染场地修复工程为案例,根据场地污染状况和修复要求,采用热强化气相抽提联合微生物降解技术进行原位修复。修复区域设置10口抽提井,5口注入井和8口监测井。首先应用气相抽提技术除去土壤中的挥发性有机物,修复20d后,场地石油烃浓度低于国家标准GB36600第二类用地筛选值;然后进行热强化气相抽提操作,将土壤中部分半挥发性有机物抽提出来;最后向土壤中注入高效降解菌,进一步除去土壤中残留的污染物,生物降解进行45 d后,土壤石油烃浓度低于第一类用地筛选值,实现修复目标。修复结果表明,该联合修复技术高效、绿色,修复过程可为同类场地修复提供工程借鉴。

关键词: 热强化气相抽提, 微生物降解, 石油烃, 原位修复

Abstract: A remediation case of petroleum hydrocarbon-contaminated site in a gas station was introduced,and regarding to the pollution extent and remedy requirement, thermally enhanced soil vapor extraction(TSVE) combined withmicrobial degradationapproach was applied for the in-situ remediation. 10 extraction wells ,5 injection wells and 8 monitoring wells were built in the remedy site.Firstlysoil vapour extraction(SVE)was operated to remove volatile organic compounds (VOCs) in the soil,and after 20 d of operation, the total petroleum hydrocarbon (TPH) concentration of the site was lower than the screening value of the Class II land of the national standard (GB 36600);Then TSVEwas carried out to extract semi VOCs in the soil. Finally degrading bacteria was injected todegrade the residual pollutants in the soil, and after 45 d, TPH concentration was lower than the screening value of the Class I soil ,which achieved the remedy goal.The results showed that TSVE combined with microbial degradationwas an efficient and green remedy approach,providing practical reference for the similar site remediation.

Key words: thermally enhanced soil vapor extraction, microbial degradation, petroleum hydrocarbon, in-situ remediation