土壤老化方法在重金属稳定化修复实验教学中的应用  

Application of soil aging method in experimental teaching of heavy metals stabilization

作　　者：马妍[1] 程芦 胡黎明[2] 陈玉倩 吴欣宜 王建兵[1] MA Yan;CHENG Lu;HU Liming;CHEN Yuqian;WU Xinyi;WANG Jianbing(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;State Key Laboratory of Hydroscience and Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]清华大学水利系水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《实验技术与管理》2023年第3期185-192,共8页Experimental Technology and Management

基　　金：中国矿业大学(北京)重点教改项目(J21ZD07);教育部第二批新工科研究与实践项目(E-KYDZCH20201801)。

摘　　要：将不同老化方法引入稳定化修复实验教学,开展了长期条件下生物炭稳定重金属效应教学研究。探讨了生物炭稳定土壤中的砷和镉的机制,分析了重金属再释放的风险。通过测定土壤基本性质和重金属浓度实验内容,引导学生对实验数据进行处理分析。结合电子探针等表征手段,研究了长期条件下不同老化土壤中砷和镉的释放规律,得出了生物炭对重金属稳定化起正面作用的结论,可为模拟分析实际场地稳定化修复的长效安全性提供参考。Different aging methods were introduced into the experimental teaching of stabilization,and the teaching research of biochar stabilizing heavy metal effect under long-term conditions was carried out.The mechanism of biochar stabilizing arsenic and cadmium in soil was discussed,and the risk of heavy metal re-release was analyzed.The students were guided to process and analyze the experimental data by measuring the basic properties of soil and the concentration of heavy metals.Combined with electron probe and other characterization methods,the release rules of arsenic and cadmium in different aged soils under long-term conditions were studied,and it was concluded that biochar played a positive role in the stabilization of heavy metals.It can provide reference for simulation analysis of long-term safety of actual site remediation.

关 键 词：生物炭 砷 镉 稳定化 老化 

分 类 号：X53[环境科学与工程—环境工程]