Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (23): 138-143.doi: 10.11924/j.issn.1000-6850.casb2020-0813

Special Issue: 土壤重金属污染

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Remediation Technologies of Polycyclic Aromatic Hydrocarbons Contaminated Soil: A Review

Teng Qing1(), Wang Chun2(), Lin Xuanjie1, Xie Meibing1, Cheng Lusi1   

  1. 1Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming Guangdong 525000
    2School of Biological and Food Engineering, Guangdong University of Petrochemical Technology, Maoming Guangdong 525000
  • Received:2020-12-21 Revised:2021-03-05 Online:2021-08-15 Published:2021-08-26
  • Contact: Wang Chun E-mail:qing309102@163.com;283964034@qq.com

Abstract:

As a typical persistent organic pollutant in the environment, polycyclic aromatic hydrocarbons (PAHs) have attracted much attention because of their strong toxicity and great harm. The researches on main remediation technologies of soil PAHs pollution at home and abroad in recent years were summarized from the aspects of bioremediation, physical remediation and chemical remediation. Bioremediation technology has the advantages of low cost, convenient operation and small secondary pollution, but it has long remediation cycle and is not suitable for high concentration polluted soil. Physical remediation and chemical remediation can be used for high-concentration contaminated soil, but there are some disadvantages, such as changing the original structure of the soil and high operating and maintenance costs. For high-concentration PAHs contaminated soil, it is advisable to remove most of the pollutants by physical and chemical remediation first, and then use bioremediation for harmless treatment to realize the recycling of contaminated soil.

Key words: polycyclic aromatic hydrocarbons, organic pollution, soil remediation, bioremediation, physical remediation, chemical remediation, development direction

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