土木与环境工程学报（中英文）2026，Vol.48Issue(2)：8-18,11.DOI:10.11835/j.issn.2096-6717.2024.014
大豆脲酶免CaCl2固化修复铅、锌污染土的稳定性
Stability of lead-zinc contaminated soil cured by soybean urease without CaCl2
摘要
Abstract
In order to examine the effect of soybean urease without CaCl2 curing treatment on the long-term stability of lead-zinc contaminated soil after restoration without greatly improving the strength of cultivated soil,the long-term stability of contaminated soil after restoration under the complex environment of dry-wet cycles,freeze-thaw cycles and acid rain leaching was discussed by using pH value,heavy metal ion leaching rate and soil heavy metal occurrence form,respectively.The results show that the surface strength of the soil cured by soybean urease without CaCl2 is significantly reduced and the permeability is improved compared with that cured by EICP.With the increase of dry-wet cycles and freeze-thaw cycles,soil pH value decreases slowly but remains weakly alkaline,and the increasing trend of heavy metal leaching rate slows down.Under the action of acid rain,with the increase of pH value of acid rain solution,the contents of Pb2+and Zn2+in leached solution gradually decrease,and both meet the requirements of hazardous waste disposal regulations.In addition,different types of acid rain have different effects on repaired soil,and its stability under sulfuric acid rain is better than that under nitric acid rain.关键词
重金属污染土/大豆脲酶/固化修复/稳定性Key words
heavy metal contaminated soil/soybean urease/curing treatment/stability分类
建筑与水利引用本文复制引用
吴振宇,段超龙,徐向春,张建伟,边汉亮,杨青波..大豆脲酶免CaCl2固化修复铅、锌污染土的稳定性[J].土木与环境工程学报（中英文）,2026,48(2):8-18,11.基金项目
河南省自然科学基金(232300420435) （232300420435）
黄河水利委员会黄河水利科学研究院开放基金(LYRCER202102) Natural Science Foundation of Henan Province(No.232300420435) （LYRCER202102）
Open Foundation of Yellow River Institute of Hydraulic Research(No.LYRCER202102) （No.LYRCER202102）
