Author： Ozden Tugba
Publisher： Taylor & Francis Ltd
ISSN： 1527-5922
Source： Environmental Forensics, Vol.9, Iss.2-3, 2008-04, pp. : 240-245
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Abstract
A simple approach to predict nitrogen concentration in groundwater beneath unsewered areas was developed and applied to the Liman region in Antalya, Turkey. The approach was also applied to predict the population density that was expected to increase groundwater nitrogen concentrations beyond 5.65 mg/L, which is the maximum value allowable by Turkish drinking water standards. The approach evaluated nitrogen and water budgets that included septic tanks, rainfall, and groundwater entering the upgradient boundary. The approach was shown to be sensitive to hydraulic conductivity, hydraulic gradient, denitrification rate in sewage, population density, and domestic water consumption. Predictions and field measurements of nitrogen concentration in groundwater showed good agreement in the Liman region. Moreover, the study illustrated the significant impact of groundwater entering the aquifer upgradient of the Liman region on nitrogen levels. The developed and tested approach is helpful and easy for planners and decision-makers to use in similar areas.
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