landfill-engineering

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Overview

 

Landfills are highly complex, well-engineered series of cells in or above the ground. Each cell is lined with an advanced liner system which prevents trash migration and contamination of groundwater. SKAPS Geonet, Geocomposite and Geotextile are best technical and financial drainage option for landfill Cell and Cap.

SKAPS products offer safer solution to improve the environment as well as increase the capacity of the landfill.

The SKAPS Geocomposite offer following functions:

  • Separation
  • Filtration
  • Drainage
  • Containment

Why SKAPS Geocomposite in Landfill?

 
  • Offer high drainage capacity under any slope and/or load.
  • Great resistance to crushing
  • Excellent behavior in terms of creep or fatigue, long term drainage
  • Offer greater durability when confronted with leachates
  • Great durability, as it made up of PP and HDPE, chemically stable elements that do not rot, they are not sensitive to salt water also offers resistance to oxidation and microorganisms.

Why SKAPS Geotextile in Landfill?

 
  • The geotextile provide excellent filtration to geocomposite and geonets for gas and liquid.
  • The geotextile separate suspended solid particles from draining liquids and prevent clogging geonets and piping systems.
  • The geotextile provide excellent cushioning to geomembrane and protect it from puncture damage.
  • The geotextile has great resistance to traction and elongation, which is important for slope stability.
  • The geotextile has excellent friction properties with HDPE geomembranes and Geosynthetics Clay Liners.
  • The geotextile installed on top of the leachate collection pipe system to prevents any clogging of perforated pipes.

 

 

 

 

Major Components of Landfill

 

The leachate collection and removal systems (LCRS)

 

The leachate collection and removal systems (LCRS) are generally installed on top of the primary geomembrane layer at the bottom of landfill. The accumulation of water mixed with the breakdown of trash creates a toxic liquid know as leachate.

The purpose of the leachate collection layer is to allow the removal of this leachate from the landfill and transport it to treatment facility. LCRS helps to control the height of the leachate above the geomembrane to keep within the specified limits of the regulating agencies.

Leachate can be removed from the landfill through leachate collection sumps or via a leachate collection header pipe system.

Leak Detection System (LDS)

 

The leak detection system (LDS) is installed between the primary and the secondary liner. A leak detection system provide rapid detection of major breaches in the primary lining system (within less than 24 hours) and limit the hydraulic head acting on the secondary barrier/layer.

Landfill Capping

 

The principal function of the capping system is to minimize infiltration into the waste and consequently reducing the amount of leachate being generated.

Other functions are to promote surface drainage and maximize run off; to control gas migration; and to provide a physical separation between waste and vegetation.

Cushion to Lining System

 

SKAPS nonwoven geotextiles play integral part in landfill lining system to protect any kind of damages to liners (geomembrane) during construction and operational phase. SKAPS nonwoven geotextiles are deployed above, below or both sides of the low permeable geomembranes as a cushion to protect the geomembranes against damage from drainage stones or alternate media during construction. It also protect against damage caused due to dumping of waste during operational phase of the landfills.

SKAPS nonwoven geotextiles weighing from 10 oz/sq yard to 32 oz/sq. yard are specifically designed as cushion to waste containment lining system.

Filtration and Drainage System

 

SKAPS nonwoven geotextiles provide excellent performance as filter when used with natural drainage media, geonet or geopipe. The geotextile filters solids (soil and waste) and allows liquid (rain water or leachate) to efficiently drain through designed drainage system.

SKAPS nonwoven geotextiles weighing from 4 oz/sq yard to 10 oz/sq yard are specifically designed as filtration/drainage geotextile.