title: Clogging of landfill tyre and aggregate drainage layers by methanogenic leachate and implications for practice.
abstract: This paper reports the results of pilot scale tests carried out to investigate the clogging of shredded and baled tyres in comparison with aggregates when percolated by leachates representative of those generated by methanogenic stage landfills. Realistic lifetime loading rates of methanogenic leachate were applied, and clogging was not generally apparent in any of the drainage media studied. This is in apparent contrast to many other studies that have demonstrated the susceptibility of all forms of drainage media to biological and chemical clogging when percolated with high strength organic and calcium rich leachates. The reasons for this difference are identified, the implications for landfill drainage system design are discussed and some suggestions for operational practice are presented for discussion.
authors.affiliation: Faculty of Engineering and Environment, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom. rpb2@soton.ac.uk
authors.forename: R P
authors.initials: RP
authors.lastname: Beaven
authors.forename: A P
authors.initials: AP
authors.lastname: Hudson
authors.forename: K
authors.initials: K
authors.lastname: Knox
authors.forename: W
authors.initials: W
authors.lastname: Powrie
authors.forename: J P
authors.initials: JP
authors.lastname: Robinson
mesh_terms: D002118:Calcium / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D004739:England; D007220:Industrial Waste / Q000032:analysis; D008697:Methane / Q000737:chemistry*; D008903:Minerals / Q000032:analysis; D010865:Pilot Projects; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007220:Industrial Waste; D008903:Minerals; D014874:Water Pollutants, Chemical; D002244:Carbon; D008697:Methane; D002118:Calcium