Sanitary Landfills
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As part of our Environmental commitment, all our Landfills are managed with the help of the latest available technologies. Waste is safely handled and disposed. As with our Percolated Liquids Treatment Plant (PLTP), its containment cells are lined with geo synthetic material to ensure high levels of liquid stillness needed for proper treatment, control, and constant monitoring of gases and noise. In addition, the support machinery is permanently upgraded to keep a high performance on the reception of daily tonnage loads arriving to our sanitary landfills 24 hours a day. Residential solid waste (RSW) coming to our sanitary landfills is treated and disposed over a sealed base we call “Waste Cells”. These are large extension of lined terrain that make it impermeable. The waste arrives to the sanitary landfills on specially designed and built trucks. We control their weight with industrial scales and then they are sent to the “Waste Cells” areas through our own internal circulation roads. Once unloaded, the RSW is spread and compacted in each “Waste Cell”. At the end of the compacting process, the cells are covered with about 20 cmts. (8 in) of filling material. The liquids obtained after the compacting process are trapped by the sealed base of the cell and then captured on trench-like canals that will take the liquids to an inspection chamber and then to accumulation pools (via gravity or mechanically pumped). Finally, the liquids are transferred to the “Percolated Liquids Treatment Plant” (PLTP). At this stage, the percolated liquids undergo biological, physical, and chemical processes to remove any pollutants. This procedure is compliant with the current environmental agencies guidelines. The now treated water can safely be returned to the local eco-system. In addition to the percolated liquid treatment process, vertical wells are built on each ‘Waste Cell” from the sealed base upward. The purpose is to extract Biogas. These wells contain perforated HDPE or PVC pipes from 3” to 6” in diameter laid over a bed of gravel. Through a “forced extraction” process created by a small vacuum in the pipe network, the Biogas can easily flow from the biomass (solid waste) to a burning plant. To end the cycle and within the frame of our environmental commitment, the Sanitary Landfills (SL) begun a Forest Management Plan. Each SL have forestation areas with an emphasis on native species depending on the location of the site. We have on-site nurseries with indigenous species managed by qualified professionals.
(See Photos of El Guanaco Park Sanitary Landfill)
(See Photos of El Retamo Sanitary Landfill)
(See Photos of Loma Los Colorados Sanitary Landfill)
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Urbaser-Danner Group’s Sanitary Landfills (SL) are areas used for the Treatment and Final Disposal of Solid Waste and/ or residential-like waste. The Landfills are properly authorized by government agencies such as the Environmental National Service and the Superintendence of Sanitary Services, among others.