Review of the Anti-Pollution Performance of Triple-Layer GM/GCL/AL Composite Liners

Review of the Anti-Pollution Performance of Triple-Layer GM/GCL/AL Composite Liners

Blog Article

Landfill leachates contain Gymnema several types of pollutants and complex components, which pollute soils and groundwater.To compensate for the limitations of single-layer and double-layer liners, a triple-layer liner system composed of a geomembrane (GM), geosynthetic clay liner (GCL), and attenuation layer (AL) was invented and widely used in landfill anti-pollution systems.In this paper, the available literature on triple-layer GM/GCL/AL composite liners is summarized.First, the four main transport processes of pollutants through the composite liner, including convection, diffusion, adsorption, and degradation, were analyzed, and the anti-pollution performances were evaluated.

According to this, the pollutant transport model considering the transport activity and transport Slip-On state was classified, and the solution methods were summarized.Finally, the breakthrough time expressions of the composite liners were determined, which provided a base for evaluating their long-term performance and predicting the service life.The purpose of this literature review is to scientifically evaluate the anti-pollution performance of GM/GCL/AL and provide a scientific base and theoretical guidance for extending its application.