有机污染土壤-地下水系统中的微生物场及多场耦合研究

doi:10.13745/j.esf.sf.2022.1.32

摘要/Abstract

摘要：

了解污染场地中微生物群落对有机污染物迁移转化的影响是高效修复治理有机污染场地的基础。自然界中的微生物以“场”的形式通过与水动力场、温度场、化学场等耦合作用,发挥其在维护生态稳定性及物质循环过程中的功能。微生物与有机物关联研究的文献计量分析结果显示,近年来关于微生物和有机物的研究主要集中在微生物群落结构、有机物的生物降解及有机物的迁移转化3个方面及一系列的关联研究中,而关于将微生物以“场”的形式定量刻画微生物在物质循环转化和维持生态稳定性方面作用的研究几乎没有。为此,本文通过研究给出了微生物场的定义,提出了有机污染场地中的微生物场概念模型和数学模型,分析了微生物场的主要影响因素及影响机制,构建了微生物场与水动力场、温度场、化学场之间耦合的本构模型。最后,对微生物场下一步的研究提出了展望。

关键词: 微生物场, 场地污染, 有机污染物迁移转化, 多场耦合

Abstract:

Understanding the impact of microbial communities on the migration and transformation of organic pollutants is the basis for efficient remediation and treatment of organic contaminated sites. Microorganisms in nature exist as “fields” via coupling with hydrodynamic field, temperature field, chemical field, etc. to exert their functions in the process of maintaining ecological stability and material circulation. The bibliometric analysis results revealed that in recent years, researches on microorganisms and organic matter have been mainly focused on three aspects: microbial community structure, biodegradation of organic matter, and migration and transformation of organic matter, along with a series of related studies; whereas only few studies have been conducted to quantitatively characterize microorganisms in the form of “fields” for their role in material circulation-transformation and maintenance of ecological stability. Hence, we sought to provide a definition for microbial field, and proposed a conceptual model and a mathematical model of microbial field in organic contaminated site. Furthermore, we explored the main influencing factors and mechanism of microbial field, and constructed a constitutive model of microbial field coupled with hydrodynamic field, temperature field and chemical field. Finally, the prospects for future research on microbial field were proposed.

Key words: microbial field, site pollution, migration and transformation of organic pollutants, multi-field coupling

中图分类号:

熊贵耀, 吴吉春, 杨蕴, 祝晓彬, 刘梦雯, 宋亚霖. 有机污染土壤-地下水系统中的微生物场及多场耦合研究[J]. 地学前缘, 2022, 29(3): 189-199.

XIONG Guiyao, WU Jichun, YANG Yun, ZHU Xiaobin, LIU Mengwen, SONG Yalin. Microbial fields and multi-field coupling in organic contaminated soil-groundwater systems[J]. Earth Science Frontiers, 2022, 29(3): 189-199.

图/表 4

图1 有机物与微生物研究主题共现网络关联图

Fig.1 Network association diagram of concurrent research themes on organic matter and microorganisms

图2 微生物场参与下的多场耦合概念模型

Fig.2 Conceptual model of multi-field coupling with microbial field participation

图3 污染场地介质理化性质及生化反应强度变化概念模型(常规有机污染物)

Fig.3 Conceptual model of physicochemical property and biochemical reaction intensity changes in contaminated media (for conventional organic pollutants)

图4 多场耦合的本构模型

Fig.4 A constructive model of multi-field coupling

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