Predicting the site water balance of a phytocapped landfill using HYDRUS 1D
Venkatraman, Kartik , Ashwath, Nanjappa , and Su, Ninghu (2011) Predicting the site water balance of a phytocapped landfill using HYDRUS 1D. International Journal of Environmental Technology and Management, 14 (1-4). pp. 269-281.
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An alternative landfill capping technique called 'Phytocapping' was trialled in Rockhampton, Australia. In this technique, trees were used as 'bio-pumps' and 'rainfall interceptors' and soil cover as the 'storage' of water. The performance of this system was measured based on its ability to minimise water percolation into waste. The percolation rate was modelled using HYDRUS 1D for two main scenarios (with and without vegetation) for the thick and thin caps respectively. Results from the measurements and modelling showed that percolation rates of 16.7 mm/year in thick cover and 23.8 mm/year in thin phytocaps are markedly lower than those expected from a clay cap. Both scenarios point to one direction stating the efficiency of phytocaps in restricting water percolation into the buried waste.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||landfill capping; transpiration; canopy rainfall interception; water percolation; phytocapping; water balance; water storage; surface runoff; native trees; HYDRUS 1D; leachate|
|Funders:||Rockhampton Regional Council; Queensland Government Department of Environmental and Resource Management|
|Date Deposited:||09 Jun 2011 04:45|
|FoR Codes:||05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050206 Environmental Monitoring @ 50%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050207 Environmental Rehabilitation (excl Bioremediation) @ 50%
|SEO Codes:||96 ENVIRONMENT > 9609 Land and Water Management > 960911 Urban and Industrial Land Management @ 50%
96 ENVIRONMENT > 9610 Natural Hazards > 961010 Natural Hazards in Urban and Industrial Environments @ 50%