Without a geomembrane, there is a higher risk of seepage from the tailings pond into the surrounding soil and groundwater. Tailings contain various potentially harmful substances such as heavy metals, metalloids, acids, and other pollutants that can leach into the environment. Seepage can lead to contamination of nearby water bodies, soil, and groundwater, posing a threat to ecosystems, aquatic life, and potentially human health.The lack of a geomembrane increases the likelihood of environmental damage and pollution. Contaminants from the tailings can enter nearby rivers, lakes, or underground water sources, causing harm to aquatic ecosystems and affecting downstream communities. The release of contaminants can have long-lasting effects on the environment, including the degradation of water quality, loss of biodiversity, and disruption of ecological balance.
Tailings often contain sulfide minerals that can undergo oxidation when exposed to air and water. This process leads to the generation of acid mine drainage (AMD), which is highly acidic and can have detrimental effects on the environment. A geomembrane acts as a barrier, reducing the oxygen and water contact with the tailings and minimizing the risk of AMD formation.
