Impermeable layers in landfill design

• Main Authors: Karanac Milica, Jovanović Mića, Timmermans Eugène, Mulleneers Huib, Mihajlović Marina, Jovanović Jovan
• Format: Article
• Language: English
• Published: Association of Chemical Engineers of Serbia 2013-01-01
• Series: Hemijska Industrija
• Subjects: landfill design; landfill impermeability; artificial geological barrier
• Online Access: http://www.doiserbia.nb.rs/img/doi/0367-598X/2013/0367-598X1300012K.pdf

Landfills are complex systems which could potentially contaminate the environment. It should be prevented by providing impermeability during the landfill design. In that aim related regulations should be followed and adequate materials that provide impermeability should be used. The first part of the paper presents review of the current regulations, interpretations, and recommendations from U.S., EU and Republic of Serbia. Knowing that the Serbian regulation should fully follow related European Directive, in analyses some inadequate formulations and terms were observed related to the Directive Annex I, 3.2. Request of the Regulation that deals with the bottom of the landfill leakage is formulated differently than in Directive as well. Mentioned problems enable some design solutions which are not among the best available techniques. In the second part the paper presents comparative analysis of possible alternatives in impermeable layer design, both for the bottom and landfill cover. Some materials like clay, CCL, GCL might not be able to satisfy prescribed requirements. The longest lifetime and the lowest coefficient of permeability, as well as excellent mechanical, chemical and thermal stability, show the mixture of sand, bentonite and polymers (PEBSM). [Projekat Ministarstva nauke Republike Srbije, br. TR 34009]