云南化工2024，Vol.51Issue(5)：39-45,7.DOI:10.3969/j.issn.1004-275X.2024.05.10
污染土壤稳定化处理后铬返溶影响因子的研究
Study on the Driving Factors of Cr Re-dissolution after Stabilizing Contaminated Soil
李义伟 1曾娟 1李立 1魏来 1钱子妍1
作者信息
- 1. 长沙矿冶研究院有限责任公司,湖南 长沙 410012
- 折叠
摘要
Abstract
The main research focuses on the driving factors of Cr re-dissolution after stabilization treatment.The results showed that the condi-tions with the greatest promoting effect of re-dissolution were water flooding,pH of acid rain at 1,temperature of 40℃,oxygen bubbling for 3 days perweek,Cr(VI)in the soil increasing from10.00 mg/kg to31.47 mg/kg,and total Crin the leaching solution increasing from0.15 mg/L to 0.36 mg/L.The effective content of Cr increased by 0.02%,1.46%,2.12%,0.03%and 0.85%after treatment under conditions of 40℃,water flooding,pH of acid rain at 1,pH of acid rain at 12,and 3 days of oxygen blowing per week.The moisture content is the main factor affecting the Cr re-dissolution after stabilization treatment of contaminated soil,while the pH of acid rain is the secondary factor.The release of Cr in the stabilized soil showed the highest degree of fit with the second-order kinetic equation under different acid rain pH conditions.关键词
土壤/稳定化/铬污染/重金属/返溶Key words
Soil/Stabilization/Chromium Pollution/Heavy Metals/Re-dissolution分类
环境科学引用本文复制引用
李义伟,曾娟,李立,魏来,钱子妍..污染土壤稳定化处理后铬返溶影响因子的研究[J].云南化工,2024,51(5):39-45,7.
