Advances in Air Sparging Technology of Saturated Zone

Liu Zhibin; Chen Zhilong; Fang Wei

doi:10.11867/j.issn.1001-8166.2013.10.1154

Advances in Earth Science >

2013 , Vol. 28 >Issue 10: 1154 - 1159

DOI: https://doi.org/10.11867/j.issn.1001-8166.2013.10.1154

Advances in Air Sparging Technology of Saturated Zone

Liu Zhibin ,
Chen Zhilong ,
Fang Wei

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Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing 210096, China

Received date: 2013-01-22

Online published: 2013-10-10

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Abstract

In situ air sparging involves injecting atmospheric air, under pressure, into the saturated zone to remove those volatile and semi-volatile organic groundwater contaminants and to promote their biodegradation by increasing subsurface oxygen concentrations. Due to the advantages of low cost, high efficiency and insitu constructability, groundwater Air Sparging (AS) technology has been quickly developed in the world recently. Based on the explanation of its remediation principle, literature review is done on the research advancement of air sparging technology mainly from three aspects. First, various methods for determination of the zone of influence and visualization techniques of air flow forms during air sparging are summarized. Then the influence of environmental geological conditions and construction technology parameters on the remediation effect of air sparging is systematically analyzed. Thereafter, two main types of air sparging theoretical models including lumped-parameter model and multiphase fluid flow model are discussed respectively in detail. Finally, based on the problems and difficulties existing in present research and engineering practice, several future tasks such as the enhancement remediation techniques in complex geological sites, microscopic intrinsic mechanisms, and establishment of related design and construction standards which require to be done are briefly analyzed.

Key words： Saturated zone; Volatile organic compounds; Air sparging; Groundwater remediation.; Geoenvironmental engineering

Cite this article

Liu Zhibin , Chen Zhilong , Fang Wei . Advances in Air Sparging Technology of Saturated Zone[J]. Advances in Earth Science, 2013 , 28(10) : 1154 -1159 . DOI: 10.11867/j.issn.1001-8166.2013.10.1154

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