Evaluation of the Cover Effect in Mafraq Landfill –Jordan Using Hydrus-2d Simulation
Author
Editor
- Raffaeloo Cossu
Summary, in English
In this study, a two-dimensional numerical model for water flow and solute transport, Hydrus-2D, was used to investigate the impact of landfill cover thickness and the antecedent water content (Ө) of the soil beneath the landfill on the chloride percolation below the landfill. Series of simulation scenarios were performed using season varying climatic data during a 30-year period including two varying factors; thickness of landfill cover (0, 50, 100 cm) and the antecedent soil water content (0.12 and 0.20 m3m-3). The simulation results showed that maximum chloride concentration for different scenarios at all location within soil profile during the entire simulation period was less than the chloride concentration in the MSW leachate. In addition, as the landfill cover increased the concentration of chloride at a certain location decreased. Meanwhile, the time required to reach this location increased. The simulation results showed also that the impact of antecedent soil water content on chloride concentration reduction increase as the cover thickness increased. Based on the result, it was recommended to use a landfill cover to reduce the chloride concentration. Cover thickness of 50 cm is suitable in case of low antecedent soil water content.
Department/s
Publishing year
2011
Language
English
Pages
581-582
Publication/Series
IWWG
Volume
13
Document type
Conference paper
Publisher
CISA, Cagliari, Italy
Topic
- Other Social Sciences
- Water Engineering
Keywords
- Hydrus-2D
- chloride concentration
- Landfill cover
- Mafraq Landfill
- Jordan.
Conference name
The Thirteenth International Waste Management and Landfill Symposium
Conference date
2011-10-03 - 2011-10-07
Status
Published