环境保护科学2025，Vol.51Issue(1)：118-122,5.DOI:10.16803/j.cnki.issn.1004-6216.2023100017
垃圾焚烧飞灰盐分对膨润土衬垫渗透系数影响
Effect of fly ash salinity incineration on permeability coefficient of bentonite liner
摘要
Abstract
Leachate from municipal solid waste incineration fly ash has high salt content,and the salt in leachate will react with bentonite liner system,which will increase its permeability coefficient and weaken the antifouling ability of liner system.A certain concentration of KCl solution and CaCl2 solution were prepared to simulate the salt substances in fly ash leachate,and the effects of leachate concentration and cation valence on the permeability of bentonite liner system were studied.By studying the correlation between swelling index and permeability coefficient,the porosity of bentonite under the action of salt is qualitatively analyzed.The results showed that with the increase of salt concentration in leachate,the permeability coefficient of bentonite increased,and divalent cations had a significant influence on the permeability coefficient.The swelling index of bentonite had a good correlation with the permeability coefficient,and the main reason for the increase of permeability was that salt increased the pore channels in bentonite.关键词
垃圾焚烧飞灰/衬垫/膨润土/渗透系数/盐分浸出Key words
fly ash from garbage incineration/gasket/bentonite/permeability coefficient/salt leaching分类
资源环境引用本文复制引用
鲁旭,李磊,朱瑾彦,王喻..垃圾焚烧飞灰盐分对膨润土衬垫渗透系数影响[J].环境保护科学,2025,51(1):118-122,5.基金项目
国家重点研发计划项目(2020YFC1908702-01) （2020YFC1908702-01）
