有机污染土壤热处理过程中的炭化行为及其影响  

Charring behaviors and their influence of organic contaminated soil during thermal treatment

作　　者：桑义敏[1] 何燎 余望 马福俊[2] 朱玲[1] 焦玉海 谷庆宝[2] SANG Yimin;HE Liao;YU Wang;MA Fujun;ZHU Ling;JIAO Yuhai;GU Qingbao(Department of Environmental Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]北京石油化工学院环境工程系,北京102617 [2]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012

出　　处：《环境工程学报》2021年第7期2181-2190,共10页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划资助项目(2018YFC1802100,2019YFC1803800)。

摘　　要：热处理技术在国内外均占有较高的市场份额,已成为有机污染场地的主要修复技术。尽管对热处理技术本身的研究和关注较多,包括工艺、参数、能源、效果、成本、应用等方面,但关于有机污染物热处理化学转化中炭化行为研究的报道并不多见。炭化行为可能会改善土壤再利用特性,对热处理工艺参数也可能有一定影响。指出了传统焦化行业中4种炭化反应类型及其机理过程,梳理了石油烃和芳烃化合物等污染土壤热处理过程中的炭化行为,总结了有机污染物炭化行为对土壤再利用特性的影响,并分析了生物质炭化产物对土壤肥力的促进机制。以此为基础,提出了有机污染土壤热处理炭化行为研究的几个重点关注方向。Thermal treatment technologies occupy a high domestic/foreign market share,and have become the main remediation technology of organic contaminated sites.Though many studies and concerns are focused on the process,parameters,energy,effect,cost and application of thermal treatment,there are few literature reports on the charring behaviors in the thermochemical conversion of organic pollutants.The charring behaviors may improve reusability of soil and affect process parameters of thermal treatment.Four types of charring reactions and their mechanisms are shown in this paper,and the charring behaviors of petroleum hydrocarbons and aromatic compounds during thermal treatment are reviewed.The effects of organic pollutants charring on soil reusability is summarized,and the improvement of biochar to soil fertility is analysed.Based on the mentioned above,several important research topics of charring process during thermal treatment of organic contaminated soil are proposed.

关 键 词：有机污染土壤 热处理技术 炭化过程 土壤再利用 影响分析 

分 类 号：X53[环境科学与工程—环境工程]