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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 10, No. 6, 2013, pp. 1367-1376
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Bioline Code: st13133
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 10, No. 6, 2013, pp. 1367-1376
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Simulation of nitrate transport and wastewater seepage in groundwater flow system
Lalehzari, R.; Tabatabaei, S. H. & Kholghi, M.
Abstract
Groundwater quantity and quality modeling is
one approach for optimal use of available water resources
in arid and semiarid regions. This study was conducted to
simulate flow treatment and nitrate transport on Shahrekord
aquifer using three-dimensional solute transport model and
geographical information system. Hydraulic conductivity,
specific yield and recharge values in flow simulation process and effect molecular diffusion coefficient, longitudinal
dispersivity and distribution coefficient in quality model
were calibrated. 120 water samples during July 2007 to
June 2008 were collected monthly from 10 wells and
measurements of nitrate were carried out. The results show
that the developed model is successfully used to simulate
flow path and nitrate transport in saturated porous media.
The highest values of nitrate occur along Bahram–Abad
village and the surroundings. The groundwater quality in
the area represents a complex system, which is affected by
different factors of pollution, such as urban wastewater and
leaching of agricultural lands.
Keywords
Aquifer; Modeling; Advection; Dispersion and contamination
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