HYDROGEOLOGICAL CONDITIONS FOR LEACHATE REDUCTION AT LANDFILL SITES

HYDROGEOLOGISKA FOERUTSAETTNINGAR FOER REDUKTION AV LAKVATTENBILDNING VID AVFALLSUPPLAG

The report presents a theoretical study of the conditions which govern leachate production. The theoretical part is supported and illustrated by results from an on-going field study. In principle, the following parts of the production process has been studied: (1) the amount of water available for infiltration. Distribution in time and intensity; (2) the water content in the uppermost part of the deposit including covering and sealing layers. Distribution with time and saturation; (3) the hydraulic conductivity of covering and sealing layers; (4) the lateral water flow in the deposit. The study shows that natural soil types, normally available, have such a high infiltration capacity, that any significant sealing effect is not achieved. It is only possible to reduce the infiltration at periods with intense precipitation or rapid snow-melt, and then only the peaks in the leachate production. Nevertheless, the sealing and covering layers on top of a deposit are of great importance as water reservoirs for the evapotranspiration. This effect is even more accentuated, when the land-fill is covered with vegetation, which may increase the annual water losses by a few hundred mm. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9175901188
• Corporate Authors:

  National Swedish Environmental Protection Board

  Smedesvagen 5, Fack
  S-171 20 Solna,   Sweden 
• Authors:
  • Karlqvist, L
  • OLSSON, T
• Publication Date: 1983

Language

• Swedish

Media Info

• Features: Figures; References; Tables;
• Pagination: 76 p.
• Serial:
  • Issue Number: 1647

Subject/Index Terms

• TRT Terms: Evapotranspiration; Flow; Fluid dynamics; Infiltration; Land reclamation; Landfills; Leachate; Leaching; Moisture content; Pavement layers; Permeability coefficient; Protection; Reduction (Chemistry); Soils; Waste products (Materials); Water
• Old TRIS Terms: Reduction
• ITRD Terms: 4563: By product; 5430: Flow (fluid); 2952: Layer; 5276: Leaching; 9149: Prevention; 3631: Reclamation (land); 4315: Seepage; 4156: Soil; 4355: Water
• Subject Areas: Geotechnology; Highways; Security and Emergencies;

Filing Info

• Accession Number: 00392541
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• ISBN: 91-7590-118-8
• Report/Paper Numbers: Monograph
• Files: ITRD, TRIS
• Created Date: Mar 29 1985 12:00AM