煤矸石对重金属污染土壤修复及潜在生态风险评价  

Remediation of Heavy Metal Contaminated Soil by Coal Gangue and Potential Ecological Risk Assessment

作　　者：娄明坤 解祯 Lou Mingkun;Xie Zhen(Life Service Co.,Ltd.,China Coal Pingshuo Development Group Co.,Ltd.,Shuozhou Shanxi 038500,China;China Coal Pingshuo Development Group Co.,Ltd.,Shuozhou Shanxi 038500,China)

机构地区：[1]中煤平朔发展集团有限公司生活服务公司,山西朔州038500 [2]中煤平朔发展集团有限公司,山西朔州038500

出　　处：《山西化工》2024年第10期269-270,282,共3页Shanxi Chemical Industry

摘　　要：煤矸石固态废物利用是解决土壤污染的化工手段之一,为此分析煤矸石对重金属污染土壤修复的影响,并通过实验测试对潜在生态风险进行评价。研究结果表明:煤矸石可以有效地减少Pb的毒害性病降低迁移速度,有利于重金属的迁移谷草,表明煤矸石具备优异的钝化作用。随着煤矸石用量增加,Pb的Cf指标先上升再降低,可以改善土壤酸碱度,促进了铅的形态转化,有利于改善受污染土地。该研究有助于从化工角度提高对煤矸石的化学性能理解,为后续的煤矸石的利用效率提高取代一定作用。The utilization of solid waste of coal gangue is one of the chemical methods to solve soil pollution.Therefore,the influence of coal gangue on the remediation of heavy metal contaminated soil was analyzed,and the potential ecological risks were evaluated through experimental tests.The results show that coal gangue can effectively reduce the toxicity of Pb,reduce the migration rate of heavy metals,and facilitate the migration of heavy metals,indicating that coal gangue has excellent passivation.With the increase of the amount of coal gangue,the Cf index of Pb rises first and then decreases,which can improve the pH of soil,promote the transformation of lead form,and help to improve the polluted land.This study is helpful to improve the understanding of the chemical properties of coal gangue from the perspective of chemical engineering,and plays a role in improving the utilization efficiency of coal gangue in the future.

关 键 词：煤矸石 土壤修复 重金属 生态风险评价 

分 类 号：X53[环境科学与工程—环境工程] X752