The liner is installed to the bunded area and ring beam wall around the tank to provide a low permeability, high chemical resistance flexible barrier to ensure against accidental chemical spills. For environmental protection and the proper functioning of a landfill containment the liner is a critical element. The primary liner function is the containment of hazardous leachate and the protection of valuable groundwater resources. A leak detection system can be installed to ensure the integrity of the primary liner on a continuous basis. Polyethylene geomembranes, resistant to most wastes, is used as an impermeable, flexible barrier to prevent interaction of landfill moisture with contaminated wastes to form leachate which could have unwanted variable characteristics.
Leachate generation is a direct result of precipitation.
A geomembrane cover to seal off the completed landfill cell serves to contain harmful methane gas which is a product of waste decomposition. Once contained, the gas can be collected for regeneration or flaring. Also the liner is an expedient method to repair existing deteriorated concrete linings. The need for positive water containment in the aquaculture industry has grown rapidly during the last several years. Public awareness of the ecological impact of aquaculture effluent's, the concern for preventing groundwater contamination, the practice of water conservation and the control of disease causing organisms are just a few of the reasons for positive water containment.