What is a geocomposite in landfill operations?

In landfill operations, a geocomposite refers to a specialized drainage solution that is designed to enhance the management of fluid movement within the landfill structure. This type of geocomposite is typically constructed from a combination of porous geotextiles and a drainage core, often made of a high-density polyethylene (HDPE) netlike structure.

The primary function of this drainage blanket is to facilitate the efficient collection and conveyance of leachate and stormwater while providing a barrier to the unwanted migration of soil and other materials. The plastic netlike structure allows fluids to flow through while maintaining stability and integrity. This characteristic is essential for maintaining the operational efficiency of a landfill as it prevents the accumulation of excess water and helps control potential contamination.

While other options may hint at concepts related to landfill operations, they do not accurately describe the function and composition of a geocomposite. A drainage blanket made of organic materials does not provide the structural stability necessary for a landfill environment. A filter layer made solely of sand lacks the engineered solution that geocomposites provide. Lastly, the composite of metal and geotextiles does not characterize the general framework or purpose of a geocomposite used in landfill operations.