岩土工程学报2026，Vol.48Issue(3)：560-568,9.DOI:10.11779/CJGE20241223
磷基固化剂处理矿区酸性重金属污染土现场试验研究
Field trial of phosphorus-based binders for solidification/stabilization of soils contaminated with multiple heavy metals
摘要
Abstract
Field tests are conducted to evaluate the effectiveness of binders(SS-H and SS-E)for solidifying/stabilizing iron(Fe)and manganese(Mn)contaminated soils at a gold mining acid waste collection reservoir.The field-stabilized soils are subjected to the toxicity characteristic leaching procedure(TCLP),pH,dry density,dynamic cone penetrometer tests,and heavy metal speciation analysis.The results indicate that field stabilization using SS-H and SS-E can significantly reduce the leached concentrations of Fe and Mn,with the leached concentrations of Fe and Mn being below the national groundwater quality standard(GB/T 14848-2017,Class III).SS-H is more effective in immobilizing Mn,with its leached concentration decreasing from 23 mg/L to 0.02 mg/L.SS-E is more effective in immobilizing Fe,reducing its leached concentration from 34.3 mg/L to 0.04 mg/L.Both SS-H and SS-E significantly improve the strength of the solidified soils.The dynamic cone penetration index of SS-H and SS-E solidified soils decreases by 93.1%and 93.2%,respectively,as compared to the untreated soils.The results demonstrate that both SS-H and SS-E binders are promising in solidifying/stabilizing multi-heavy metals contaminated soils with low pH.After stabilization,the water-soluble Mn fractions in the SS-H-and SS-E solidified soils are reduced from 16.5%to 0.19%and to 0.34%respectively,while alterations in Fe speciation are insignificant.关键词
固化稳定化/磷基固化剂/现场试验/工程特性/环境安全特性Key words
solidification/stabilization/phosphorus-based binder/field test/engineering properties/environmental characteristics分类
建筑与水利引用本文复制引用
胡阳,周实际,徐杨,林恩峰,曾施敏,田明阳,林敏立,杜延军..磷基固化剂处理矿区酸性重金属污染土现场试验研究[J].岩土工程学报,2026,48(3):560-568,9.基金项目
国家重点研发计划项目(2019YFC1806000) （2019YFC1806000）
安徽省重点研发计划项目(2023t07020018) （2023t07020018）
国家自然科学基金项目(42477178)This work was supported by National Key Research and Development Program of China(Grant No.2019YFC1806000),Key Research and Development Program of Anhui Province(Grant No.2023t07020018),and National Natural Science Foundation of China(Grant No.42477178). （42477178）
