石灰在填埋场防渗层中的改性研究

Lime-modified Impermeable Layer in Landfill

渗滤液是城市固体废物填埋场污染环境的主要来源之一。防渗层可以减少其对环境的污染。鉴于天然防渗层中存在防渗性能差等问题,提出将石灰作为配比填料加入到填埋场底部防渗层中。实验表明,在天然防渗层中分别加入配比为0%、5%和10%的石灰后,配比为10%的防渗层防渗性能良好,对COD和锌离子去除能力较强,效果最佳。

A bench scale experiment was conducted to examine the way to improve natural impermeable layer using lime in municipal solid wastes land fills. It has been showed that lime plus montmorillonite clay in certain proportions can obviously better contaminant resistant property of natural layers.