Permanent Capping Landfill Liners & Temporary Landfill Capping Liners
This versatile use of geomembrane liners is one that performs an important function in the area of waste management. Landfills are among the most widespread means of waste disposal in many communities. A very real concern with landfill is that many are essentially large holes dug into the ground and filled with waste, which is then covered up with dirt. The ecological concerns are glaringly obvious. A primary issue in these cases is water seepage and the release of toxic gasses.
Normal rainwater that is allowed to penetrate the landfill cover will saturate the waste underneath and form what is called leachate. This hazardous material will form in pockets and eventually seep through the sides and bottom of the landfill, contaminating the area – especially nearby water sources. Also, because landfill waste is covered, fumes and gasses will form underneath the top layer. Because of the nature of the waste, heat, and other factors (such as the formation of leachate); these gasses can be toxic. Fortunately, these ecological concerns have been addressed as the public has developed a pro-active awareness of issues facing the environment. Landfills are now required to install preventive measures (i.e. caps) to ensure environmental safety.
Nevertheless, while there are many laws and regulations that exist to lessen any environmental damage that these areas impose, there remains the need for the proper equipment to carry out this particular endeavor. Today, landfills will typically not only be composed of a topsoil layer; but also include a layer for drainage, and a final layer to prevent the migration of hazardous material from the site into the ground. This requires durable materials that are capable of establishing an impermeable barrier to prevent liquid penetration.
As such, geomembrane liners are the perfect solution and means to accomplish landfill capping. Our LLDPE (Linear Low Density Polyethylene) are especially useful in this role. LLDPE liners possess the following features that are particularly suited for landfill capping:
- Chemical resistant – which not only increases overall protection versatility, but extends the useful life of the liner itself (relative to, for example, HDPE liners)
- Durable – durability is a key factor as the liner must be able to withstand waste objects that are subject to puncture or tear.
- Radiation Resistant – Sun light can deteriorate many lining applications. LLDPE ultra-violet resistance allows for the liners extended life and vitality.
- Flexibility and Strength – These landfill capping liners are manufactured to withstand required tolerances over an extended period. LLDPE liners also retain its protective characteristics when stretched, offering a high degree of performance versatility.