Geomembrane Liner Landfill

Geomembrane Liner Landfill – A geomembrane liner is a key component in the construction of landfills, providing a barrier to prevent contaminants from leaching into the surrounding soil and groundwater. Here’s a detailed overview:

OTHER ARTICLES : HDPE Pond Liner Specifications

What is a Geomembrane Liner?

A geomembrane liner is a synthetic membrane liner or barrier with very low permeability, primarily used to control fluid migration in a man-made project, structure, or system. These liners are commonly made from various polymers such as polyethylene (HDPE, LLDPE), PVC, and others.

# Applications in Landfills

-> Primary Liner : The first line of defense against leachate seepage.

-> Secondary Liner : Provides additional protection in double-liner systems.

-> Capping : Used as a cover to prevent water infiltration and gas escape after landfill closure.

*) Benefits

• Impermeability
  High resistance to fluid passage, preventing contamination of soil and groundwater.
• Chemical Resistance
  Resistant to a wide range of chemicals, ensuring long-term durability.
• UV Stability
  Some geomembranes are designed to withstand exposure to UV radiation without degradation.

*) Installation Process

1. Site Preparation : Excavation and grading to prepare the subgrade.
2. Base Layer : Placement of a compacted soil layer or geotextile as a cushion.
3. Liner Deployment : Unrolling and positioning the geomembrane liner, ensuring minimal wrinkles.
4. Seaming : Thermal or chemical bonding of liner panels to create a continuous barrier.
5. Inspection and Testing : Quality control checks, including vacuum testing, air pressure testing, and destructive testing for seam strength.