The main role of the geomembrane


The main role of the geomembrane is seepage control and isolation, often used in landfills, tailings storage sites, channel seepage control, fish pond lotus root pond seepage control, dam seepage control and subway projects, geomembrane is a waterproof barrier-type materials based on polymers as the basic raw materials, with a high tensile strength, strong weather resistance, chemical stability performance and good heat and cold resistance. Mainly divided into low-density polyethylene (LDPE) geomembrane, high-density polyethylene (HDPE) geomembrane and EVA geomembrane. Its main mechanism is to isolate the leakage channel of the earth dam by the impermeability of the plastic film, and to bear the water pressure and adapt to the deformation of the dam body by its large tensile strength and elongation.

The main purpose of laying a geomembrane at the bottom of a domestic waste landfill is to prevent waste leakage and pollution of groundwater and the surrounding environment, and to protect water resources and ecological safety. The following are several important reasons for laying geomembranes:

Anti-seepage effect: Domestic garbage contains liquid components, such as wastewater and rainwater, etc. These liquids may seep into the ground through the garbage layer, and then pollute the groundwater. The geomembrane as an impermeable layer can effectively prevent the liquid in the garbage from seeping through, reducing the risk of groundwater contamination.

Preventing the spread of pollutants: Domestic waste may contain harmful substances, such as heavy metals and organic matter. If these pollutants spread to the surrounding soil, groundwater or surface water, they can have serious impacts on the environment and ecosystem. Laying geomembranes can stop the spread of these pollutants and protect the safety of water resources and ecosystems.