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SO – 101 capping and reclamation of landfills at the TKO Sverepec site

Landfills

Geosynthetic materials delivered for the capping and reclamation of landfills in Sverepec, Slovakia.

A site in Sverepec Slovakia used Maccaferri’s Geosynthetic products including the geocomposite MacDrain W to cap and reclaim landfill.

The installation is designed to enable the revegetation of the landfill closure capping.
Capping and reclamation of landfills are used mainly :

  • for draining the methane gas which develops during the degradation of waste
  • to prevent the infiltration of rainwater to stop contamination and the generation of excess pollutant leachate within the cell.

The landfill project in TKO Sverepec exemplifies the above aptly. After profiling the landfill body into the desired shape (slope inclination 1: 3 with benches of minimum width 2.0 m), the outer edge of the landfill surface is covered by a layer of drainage geocomposite MacDrain W that serves to ventilate the methane gasses that are produced within the landfill. The next layer is formed using the bentonite geoclay liner Macline GCL—i.e., the heart of the landfill capping forming waterproof system. The last layer is made from another layer of drainage geocomposite MacDrain W and serves for draining rainwater. Topsoil is the applied to the outer surface, sometimes in conjunction with a grip-layer or erosion control mat such as our MacMat R.

For this kind of application, gravel ribs are usually used. These have a width of 500 mm and a depth of 300 mm. They are filled with crashed gravel of fraction 16 / 32mm, mineral clay sealant (separated into two layers) that is compacted separately and has a thickness of 250 mm, and finally the drainage layer with a thickness of 500 mm made from the recycled concrete of fractions 16 / 32mm.

In the case of this project, approximately 1.0 m of the closure layer has been replaced by the use of geosynthetic materials with an approximate thickness of 2-5cm total. Subsequently, these layers will be covered with an 800 mm thick soil layer onto which vegetation will be planted. The thickness of the capping layer where the tree planting is proposed has to be sufficiently stable to allow for trees to grow.

For more information, please contact us.

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