Landfill and contamination liners

Landfill & Contamination Liners

Our team of experts at Aeramix can design and install a range of liners, covers and barriers to avoid landfill contamination. These custom plastic liners and covers stop the leaking of hazardous chemicals or harmful matter into our environment.Aeramix provides cost-effective project management systems that monitor soil/sediment containment. This ensures environmental risks are minimized. Tests for soil acidity and chemical traces are good parameters to put in place. Quality control and regular testing in surrounding areas will ensure an effective environmental management system. Geomembranes often experience degradation resulting from insufficient tensile strength, tear resistance, impact resistance, puncture resistance and are susceptible to environmental stress cracking (ESC).

For this reason, landfill liners must be durable. They typically require a layer of compacted clay (GCLs) that is of minimum thickness and maximum hydraulic conductivity, overlaid with a HDPE geomembrane. Aeramix can custom-design landfill liners and composite landfill liners for your site. Once installed, both liners serve as low permeable barriers to prevent the migration of leachate and its toxic properties (which can spoil water and surrounding soil if left unguarded).

Geosynthetic Clay Liners (GCLs)

Geosynthetic Clay Liners (GCLs) are made up of a woven fabric­like material and can be used to line landfills to prevent seepage and contamination. GCLs work perfectly as landfill liners as they incorporate bentonite or other clay resulting in a low hydraulic conductivity. In landfill, the GCL is installed with a HDPE liner over it and often feature a triple liner system for extra protection. Such measures contribute towards reduced permeability, slowing the rate of seepage.

Geotextiles

Geotextiles are permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain. Typically made from polypropylene or polyester, geotextile fabrics come in three basic forms: woven, needle punched, or heat bonded. Geotextile composite products such as geogrids and meshes have been developed where each configuration can yield benefits in geotechnical and environmental engineering design.

HDPE Liners

High Density Polyethylene (HDPE) liners are the most widely used geomembrane for containment because of its durability and longevity.

  • HDPE’s chemical resistance makes it ideal for use as a landfill baseliner HDPE comes in a range of thicknesses and roll widths. HDPE liners can also be used in a variety of secondary containments, including pond linings, and water containment projects.

If treated with a UV stabiliser, HDPE can provide the UV resistance required for many years of outstanding UV resistant service.

LDPE & LLDPE Liners

LDPE (Low Density Polyethylene) and LLDPE (Linear Low Density Polyethylene) liners are easy to fold and flexible in structure.

LDPE is widely used for manufacturing many domestic goods including bottles, plastic bags and computer hardware.

LLDPE is especially useful when working in a small space or tank, as it is easy to manipulate into different shapes and sizes.

Smooth & Textured Liners

HDPE Smooth geomembranes are used in projects demanding minimum permeability. They are extremely cost effective for a diverse range of applications including:

  • Aquaculture
  • Landfill (C&D and solid waste)
  • Animal waste containment
  • Power plants
  • Concrete tank liners

Textured HDPE improves the friction between the liner and the subgrade. It is available textured on one or both sides. The main benefit is that the texture makes the liner less slippery, therefore liners can be walked on safely. Textured HDPE is often specified for lining landfill.