GEOSYNTHETICS WORLD: waste disposal

Showing posts with label waste disposal. Show all posts

Extra volume in waste containment

In the construction of waste containments there is an economic advantage of using geosynthetics products.
As seen in the first picture if you use traditional clay and gravel layers in the landfill you can have about 5000 m3 of volume.

But as seen in the second picture if geosynthetics materials are used in the waste disposal area a gain of extra volume will be about 300 m3 with an increase of about 6% in the same area.

Layers of a landfill

From bottom to top layers:

Waste
Leveling layer : Levels the top of the waste dump. Forms a foundation layer for the capping construction.
Gas conducting layer : Ensures controlled removal of the gas rising to the surface of the dump.
Impermeable seal : Stops the escape of gas and prevents the influx of (rain) water.
Drainage layer : Removes excess (rain) water.
Vegetation layer : Permits formation of an environmentally acceptable surface structure and protects the liner.

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-Capping system for waste areas

-Waste disposal area

Capping system for waste areas

Instead of using traditional (mineral) products if we use geosynthetics materials for the capping of waste disposal areas we may have extra storage. So, to use geosynthetics has economic advantages against the traditional products. Also it is more easy to use geosynthetics (geotextiles, geomembranes, geogrids, geocomposites, geomats).

On the picture above you can see a simple comparison of “traditional” mineral- and “geosynthetic” capping of landfills.

As seen the mineral seal and drainage section have much thickness than the geosynthetics drainage and geomembrane seals.

Geocomposite drainage materials are used both for gas and water drainage.