Case Study: 004
Landfill Leachate Lagoon - Floating Cover

The Task
F.L.I. Environmental constructed and lined a landfill leachate containement lagoon. In order to avoid odours and ingress of rainwater there was a requirement to cover the lagoon. The cover level had to fluctuate up and down with the varying leachate levels.

The Solution

F.L.I. Environmental proposed the use of a 1.5mm thickness Polyolefin Floating Cover.

F.L.I. Environmental's cover design and selection of materials was critical to the successful functioning of the cover.

F.L.I. Environmental utilised their double 'Y' tensioned plate cover design incorporating flexible hinges and strategically placed floats to ensure proper functioning of the cover. Extraction of gas generated by the leachate was accommodated by F.L.I. Environmental's gas collection system and rainwater was removed form the cover via a collection sump and discharge pipe system.

Customer
Cork Corporation, Ireland

Main Contractor
Martin O'Callaghan Civil Engineering Ltd.

Consultant
Fehily Timoney


Geomembrane Cover During Installation


Geomembrane Cover Floating on Contained Leachate