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地球化学工程技术修复农田土壤重金属污染研究进展
王 喆, 蔡敬怡, 候士田, 朱晓华, 袁 欣, 赵奕然, 刘久臣, 李 航, 孙 倩, 张隆隆, 谭科艳
中国地质科学院国家地质实验测试中心,自然资源部生态地球化学重点实验室
摘要:
随着我国农田土壤重金属污染的加剧,传统的物理、化学和生物修复方法不能完全满足农田土壤修复的要求,亟待寻找高效稳定、成本低廉且无二次污染的农田土壤修复技术。地球化学工程技术即是遵循这一理念的修复技术之一。本文就地球化学工程技术在农田土壤修复中的应用现状与阶段性成果进行了回顾,着重概述了地球化学材料固定与钝化,地球化学工程阻隔,地球化学转化、吸收与浓集以及地球化学自然降解与衰减等4类技术在土壤修复中的研究进展和实践成果。并在此基础上讨论了应用地球化学工程技术进行农田土壤修复的优势和不足,展望了地球化学工程技术修复农田土壤的应用前景和发展趋势,提出注重多种修复技术的联合使用、开发功能化纳米材料与磁性纳米复合材料进行修复及加快土壤修复理论成果转化的研究方向。
关键词:  地球化学工程  重金属  环境修复  农田土壤
DOI:10.13758/j.cnki.tr.2020.03.003
分类号:X53
基金项目:中国地质科学院基本科研业务费项目(YYWF201722,YYWF201617)和自然资源部生态地球化学重点实验室开放基金项目(ZSDHJJ201803)资助。
Advances in Geochemical Engineering Technology for Remediation of Farmland Soil Contaminated by Heavy Metals:A Review
WANG Zhe, CAI Jingyi, HOU Shitian, ZHU Xiaohua, YUAN Xin, ZHAO Yiran, LIU Jiuchen, LI Hang, SUN Qian, ZHANG Long Long, TAN Keyan
Chinese Academy of Geological Sciences, National Research Center for Geoanalysis, Key Laboratory of Eco-geochemistry, Ministry of Natural Resources
Abstract:
With the aggravation of heavy metal pollution in farmland soils in China, traditional methods of remediation such as physical, chemical and biological methods are insufficient to completely meet the requirements of remediation. It is urgent to develop a technology that is efficient, stable, low-cost and has no secondary pollution. This paper reviewed the application and progress of geochemical engineering technology in remediating contaminated farmland soil, highlighted the fixation and deactivation of geochemical materials, geochemical engineering barriers, geochemical transformation-absorption-concentration and natural attenuation, meanwhile, the advantages, disadvantages and the development trend of this technology were also discussed and prospected. And Itis Suggested that attentions should be paid to the combination of various remediation technologies, the preparation of functionalized nanomaterials and magnetic nanocomposites, and the acceleration of theoretical achievements in soil remediation to practical application.
Key words:  Geochemical engineering  Heavy metals  Remediation  Farmland soil

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