浙江农业学报 ›› 2018, Vol. 30 ›› Issue (10): 1748-1754.DOI: 10.3969/j.issn.1004-1524.2018.10.19

• 环境科学 • 上一篇    下一篇

不同氧化体系去除污染土壤中多环芳烃的对比研究

张杨1, 李森1, *, 张宏玲1, 占升1, 2, 商照聪1   

  1. 1.上海化工研究院有限公司 工业(土壤污染修复)产品质量控制和技术评价实验室,上海 200062;
    2.上海应用技术大学 化学与环境工程学院,上海 201418
  • 收稿日期:2017-12-21 出版日期:2018-10-25 发布日期:2018-11-02
  • 通讯作者: 李森,E-mail:lsjb2008@163.com
  • 作者简介:张杨(1989—),女,上海人,硕士,工程师,从事污染场地修复工艺和材料研发。E-mail:zy_srici@163.com
  • 基金资助:
    上海张江国家自主创新示范区专项发展(201701-PT-C1085-019)

Comparative study on polycyclic aromatic hydrocarbons removal from contaminated soil using different oxidation systems

ZHANG Yang1, LI Sen1, *, ZHANG Hongling1, ZHAN Sheng1, 2, SHANG Zhaocong1   

  1. 1. Laboratory of Industrial (Soil Pollution Remediation) Product Quality Control and Technical Evaluation, Shanghai Research Institute of Chemical Industry Co. Ltd., Shanghai 200062, China;
    2. School of Chemical and Environmental Engineering, Shanghai Institution of Technology, Shanghai 201418, China
  • Received:2017-12-21 Online:2018-10-25 Published:2018-11-02

摘要: 采用类Fenton(芬顿)、高锰酸钾、过硫酸钠3种氧化体系去除污染土壤中的多环芳烃(PAHs),在最优实验因素配比条件下,其对污染土壤中PAHs的最高去除率分别为96.5%、94.0%和95.6%。在此基础上,进一步开展放大反应,改变水土质量比为0.6∶1,反应温度为25 ℃,3种氧化体系对PAHs的最高去除率分别为63.2%、72.1%和70.8%。以化学计量的氧化剂需求指数(SOD)评价3种氧化体系对PAHs的氧化效率,结果表明,高锰酸钾体系的氧化效率最高。由经济核算可知,高锰酸钾体系在实验条件下对PAHs污染土壤的修复成本最低。

关键词: 多环芳烃, 污染修复, 氧化反应

Abstract: Fenton-like, potassium permanganate and sodium persulfate oxidation systems were used to remove polycyclic aromatic hydrocarbons (PAHs) from contaminated soil. Under the best experimental factors combinations, the maximum PAHs removal rate of these three systems was 96.5%, 94.0% and 95.6%, respectively. On the basis, amplification reactions of the above three systems were carried out in drum reactor with weight ratio of water to soil of 0.6∶1, temperature of 25 ℃,and the removal rates were 63.2%, 72.1% and 70.8%, accordingly. Stoichiometric oxidant demand (SOD) was introduced to evaluate the oxidation efficiency of these systems, and it was shown that the oxidation efficiency of potassium permanganate was higher than the others. In addition, the economic costs of potassium permanganate was the smallest to remove PAHs from contaminated soils under the experimental conditions.

Key words: polycyclic aromatic hydrocarbons, pollution remediation, oxidation

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