Geotechnical Department, Yıldız Technical University, Davutpaşa, İstanbul 34220, Turkey.
Environmental Engineering Department, İstanbul University-Cerrahpaşa, Avcılar, İstanbul 34320, Turkey E-mail:
Water Sci Technol. 2022 Mar;85(5):1581-1599. doi: 10.2166/wst.2022.033.
Landfilling is one of the most widely used methods to reduce the impact on the environment and human health by ensuring the management of solid wastes. For the process in question to be called landfill, the landfill leachate must be controlled and liner impermeability conditions must be provided. For this reason, compacted clay liners (CCL) and geosynthetic clay liners (GCL) with very low hydraulic conductivity are often used as hydraulic barriers in landfills to prevent the risk of leachate mixing with groundwater. However, as a result of various interactions between leachate-clay liners, changes occur in the hydraulic conductivity of the liners. In this review, the change (increase/decrease) in the hydraulic conductivity of the landfill liners caused by the contaminants in the leachate composition and the mechanisms responsible for this change were examined. In addition, deficiencies in the literature on this subject were identified and directions for future studies were presented.
垃圾填埋是减少固体废物对环境和人类健康影响的最广泛应用的方法之一。为了使这一过程被称为垃圾填埋，必须控制垃圾渗滤液并提供衬层防渗条件。出于这个原因，常压实粘土衬层（CCL）和土工合成粘土衬层（GCL）具有非常低的水力传导率，作为垃圾填埋场的水力屏障，以防止渗滤液与地下水混合的风险。然而，由于渗滤液-粘土衬层之间的各种相互作用，衬层的水力传导率会发生变化。在这篇综述中，研究了渗滤液成分中的污染物对垃圾填埋场衬层水力传导率的变化（增加/减少）及其变化的机制。此外，还确定了该主题文献中的缺陷，并提出了未来研究的方向。
