| 三种修复剂对铬污染土壤的修复效果 |
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| 引用本文： | 温俊国,朱宇恩,时伟宇,李华,袁进,李晓娇.三种修复剂对铬污染土壤的修复效果[J].环境工程,2017,35(9):181-185. |
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| 作者姓名： | 温俊国 朱宇恩 时伟宇 李华 袁进 李晓娇 |
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| 作者单位： | 1. 山西大学环境与资源学院,太原,030006;2. 西南大学地理科学学院,重庆,400715;3. 山西省环境生态研究中心,太原,030002 |
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| 基金项目： | 山西省科技攻关计划，山西省科技重点研发项目，“工业生态与环境工程教育部重点实验室开放基金” |
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| 摘 要： | 采用淋溶土柱的方式,探讨醋糟、醋糟+腐殖酸、醋糟+不锈钢尾渣三种修复剂对铬污染土壤的修复效果。结果表明:三种修复剂均能促进土壤Cr(Ⅵ)的还原,增强土壤对铬的固定能力,降低土壤的有效铬含量。其中,施加醋糟的效果要优于醋糟与不锈钢尾渣及腐殖酸的配施,且醋糟+不锈钢尾渣的修复效果要优于醋糟+腐殖酸。施加醋糟,Cr(Ⅵ)的还原率可达56.38%,总铬含量可增加95.08%;醋糟+不锈钢尾渣还原率可达47.94%,总铬含量可增加89.66%;醋糟+腐殖酸还原率可达到27.17%,总铬含量可增加39.78%。经过三种修复剂处理,土壤有机质含量及阳离子交换量显著增加,土壤氧化还原电位及有效铬含量显著下降。采用醋糟和醋糟+腐殖酸处理后可降低土壤pH值,而醋糟+不锈钢尾渣可提高土壤pH值。
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| 关 键 词： | 土壤 铬污染 还原 固定 修复 |
REMEDIATION EFFECT OF THREE DIFFERENT AMENDMENTS ON Cr CONTAMINATED SOIL |
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| WEN Jun-guo,ZHU Yu-en,SHI Wei-yu,LI Hua,YUAN Jin,LI Xiao-jiao.REMEDIATION EFFECT OF THREE DIFFERENT AMENDMENTS ON Cr CONTAMINATED SOIL[J].Environmental Engineering,2017,35(9):181-185. |
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| Authors: | WEN Jun-guo ZHU Yu-en SHI Wei-yu LI Hua YUAN Jin LI Xiao-jiao |
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| Abstract: | Stabilization effect of Cr contaminated soil was investigated through the experiment of leaching soil column,using three amendments including vinegar residue,humic acid and stainless steel slag.The results indicated that the three amendments had positive effect on increasing the reduction and fixation efficiency of Cr (Ⅵ) and decreasing the available chromium in soil.Effect of vinegar residue was better than the others.The combination of vinegar residue and stainless steel slag was better than the combination of vinegar residue and humic acid.Using vinegar residue could reduce about 56.38％ of Cr(Ⅵ) and the total chromium could be fixed by 95.08％.The combination of vinegar residue and stainless steel slag reduced 47.94％ of Cr(VⅥ) and the total chromium could be fixed by 89.66％.The combination of vinegar residue and humic acid reduced only 27.14％ of Cr(VⅥ),and the total chromium could be fixed by 39.78％.All of those three amendments increased the soil organic matter content and the cation exchange capacity,decreased the redox potential and the available chromium.The pH of the treated soil increased by the combination of vinegar residue and stainless steel slag,whereas the others turned out just the opposite. |
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| Keywords: | soil chromium pollution reduction fixation remediation |
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