HDPE SHEET For LandFill

About HDPE SHEET For LandFill

The landfills have been designed and constructed, as a secure containment facility incorporating multilayer composite liner systems covering the entire surface area of the site. As the sites are lined, landfill gas and contaminated liquid within the landfill (know as leachate) can be collected and treated to ensure that there will be no untreated discharges from the landfill to the environment.

The geomembrane used in the landfill liner systems with 60 mils (0.06 inches) thick and must be made of a material (such as high density polyethylene (HDPE)) that is extremely low in permeability. The material must also have chemical and physical characteristics that are not adversely affected by the placement of waste or by contact with leachate.

Linear low density polyethylene (LLDPE) and high density polyethylene (HDPE) are materials typically specified for geomembranes in solid waste landfill cover systems. A geomembrane barrier used in landfill final cover system must be a minimum of 40 mils thick if comprised of LLDPE or a minimum of 60 mils thick if it is comprised of HDPE. The 60 mils minimum thickness for HDPE geomembranes is to achieve proper field seams.