The treatment of landfill leachate using natural systems

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dc.contributor.advisor Meere, Patrick A. en
dc.contributor.advisor Allen, Alistair R. en Ryan, Kevin 2015-09-16T11:17:31Z 2015-09-16T11:17:31Z 2014 2014
dc.identifier.citation Ryan, K. 2014. The treatment of landfill leachate using natural systems. PhD Thesis, University College Cork. en
dc.identifier.endpage 669
dc.description.abstract Leachate may be defined as any liquid percolating through deposited waste and emitted from or contained within a landfill. If leachate migrates from a site it may pose a severe threat to the surrounding environment. Increasingly stringent environmental legislation both at European level and national level (Republic of Ireland) regarding the operation of landfill sites, control of associated emissions, as well as requirements for restoration and aftercare management (up to 30 years) has prompted research for this project into the design and development of a low cost, low maintenance, low technology trial system to treat landfill leachate at Kinsale Road Landfill Site, located on the outskirts of Cork city. A trial leachate treatment plant was constructed consisting of 14 separate treatment units (10 open top cylindrical cells [Ø 1.8 m x 2.0 high] and four reed beds [5.0m x 5.0m x 1.0m]) incorporating various alternative natural treatment processes including reed beds (vertical flow [VF] and horizontal flow [HF]), grass treatment planes, compost units, timber chip units, compost-timber chip units, stratified sand filters and willow treatment plots. High treatment efficiencies were achieved in units operating in sequence containing compost and timber chip media, vertical flow reed beds and grass treatment planes. Pollutant load removal rates of 99% for NH4, 84% for BOD5, 46% for COD, 63% for suspended solids, 94% for iron and 98% for manganese were recorded in the final effluent of successfully operated sequences at irrigation rates of 945 l/m2/day in the cylindrical cells and 96 l/m2/day in the VF reed beds and grass treatment planes. Almost total pathogen removal (E. coli) occurred in the final effluent of the same sequence. Denitrification rates of 37% were achieved for a limited period. A draft, up-scaled leachate treatment plant is presented, based on treatment performance of the trial plant. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2014, Kevin Ryan. en
dc.rights.uri en
dc.subject Landfill en
dc.subject Compost en
dc.subject Willow en
dc.subject Leachate treatment en
dc.subject Natural systems en
dc.subject Reed beds en
dc.subject Sand filter en
dc.subject Timber chip en
dc.subject Vegetated plane en
dc.title The treatment of landfill leachate using natural systems en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en No embargo required en
dc.description.version Accepted Version
dc.contributor.funder Cork City Council en
dc.description.status Not peer reviewed en Biological, Earth & Environmental Sciences en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
dc.internal.conferring Summer Conferring 2014

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© 2014, Kevin Ryan. Except where otherwise noted, this item's license is described as © 2014, Kevin Ryan.
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