Landfill Capping

All-in-One Capping,, Pozidrain SKL, Sutton Landfill, Ashfield, UK

Project Information

Client:SUEZ UK (formerly Sita UK)
Contractor:STC
Consultant:CEEMA
Product:Pozidrain 6SKL250D/NW8
Quantity42,000m2
Benefits:- All-in-one drainage & capping barrier
- High flow capacity in all directions
- Specially adapted geocomposite with integral geomembrane overlaps
- Large rolls for fast installation



Project Description

Sutton landfill site is situated in the Ashfield district of Nottinghamshire, UK. The facility has, since the 1970s, fulfilled landfill requirements for residents and commercial contractors between Nottingham and Mansfield.

When licensed capacity of the landfill was reached it was important to efficiently manage the leachate. Leachate generation rates are primarily dependent upon the quantity of precipitation that enters the landfill through infiltration. Therefore, it was essential to install an effective cap that would intercept and drain rainwater in order to reduce leachate generation rate.

Landfill operator Sita UK (now Suez UK) approached Ceema Consultancy to design a final capping system for this landfill site.

The Challenge

Sutton landfill was required to be safely capped with a permanent geosynthetic capping system and 1m of soil cover in order to prevent ground water pollution.

The requirement was to design a capping solution that would prevent the infiltration of water, enable fast installation and meet Environment Agency requirements.

The geosynthetic capping solution required a high performance geocomposite drainage and capping barrier.

The challenge was to produce a cost effective design that met environmental standards by providing an adequate barrier with drainage performance whilst avoiding the use of multiple geosynthetic layers or drainage stone.

The Solution

The designer worked with ABG to develop a geosynthetic capping solution that would provide the required drainage flow capacity and an effective capping barrier to ensure long term performance.

The unique all-in-one ABG Pozidrain 6SKL250D/NW8 geocomposite drainage and capping barrier was specified by the designer and approved by the Environment Agency. The geocomposite system comprised an impermeable back HDPE cuspated drainage core with an extended flat selvedge for overlapping, and geotextiles bonded on both sides.

The ABG Pozidrain geocomposite was installed on top of the 200mm of blinding material and covered with 1m of soil. The capping was completed without any stability problems and drainage performance was reported to be adequate.

 ABG Pozidrain SKL geocomposite

ABG Pozidrain SKL Drainage Geocomposite

Large rolls of Pozidrain geocomspote enabled rapid installationLarge rolls of geocomspote enabled rapid installation
	 Flat selvedge ensured easy overlapping and jointing of the capping geosynthetic rollsFlat selvedge ensured easy overlapping and jointing
ABG Pozidrain allows high drainage flow capacity in all directionsHigh flow capacity in all directions

The ABG Service

ABG provided design assistance. This included slope stability and flow capacity calculations.

Contact ABG today to discuss your landfill project specific requirements and discover how ABG past experience and innovative products can help on your project.

Pozidrain

Pozidrain drainage geocomposite is a wide-width preformed drainage and gas venting solution, providing a sustainable, environmental alternative to traditional filter stone drainage layers. Used extensively for landfill and contaminated land drainage on slopes and basal areas to remove water, liquids and gas quickly & efficiently.

more...

Pozidrain Drainage geocomposite for landfill drainage and capping from ABG Geosynthetics
 

Products

Pozidrain

Pozidrain drainage geocomposite is a wide-width preformed drainage and gas venting solution, providing a sustainable, environmental alternative to traditional filter stone drainage layers. Used extensively for landfill and contaminated land drainage on slopes and basal areas to remove water, liquids and gas quickly & efficiently.

more...

Pozidrain Drainage geocomposite for landfill drainage and capping from ABG Geosynthetics
 

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