Simulation of Nitrate Concentration in Aquifer in Qazvin Plain Using Groundwater Modeling System (GMS)

The Journal of Qazvin University of Medical Sciences

卷:23

Maryam Bayatvarkeshi¹  Hamid Zare Abyane¹  Hamid Karyab² 

[1] ;

[2] Department of Environmental Health Engineering, School of Health, Qazvin University of Medical Sciences, Qazvin, Iran.;

关键词: groundwater modeling system (gms);    nitrate;    groundwater;   

DOI  :  10.32598/JQUMS.23.3.250

来源: DOAJ

【 摘 要 】

Background Nitrate is among major anions in drinking water. Therefore, it is crucial to investigate itsconcentration in water resources. Modeling is a management strategy to predict the behavior of nitratein water resources.Objective The current study aimed to predict nitrate concentration in the aquifer of Qazvin plain, usingGroundwater Modeling System (GMS).Methods The GMS7.1 software was used to prepare the groundwater flow model. MODFLOW patternwas used to investigate the three-dimensional flow. MT3D pattern was used to assess the changes nitrateconcentration in the aquifer. Additionally, several scenarios were designed to evaluate the processof nitrate changes in the aquifer by altering in the aquifer feed and nitrate input rates.Findings There was no anomaly concentration in the aquifer. The scenarios of rainfall reduction suggestedthat nitrate feed was ineffective in changing nitrate concentration in the aquifer. Moreover, withentry 100, 200, and 300 mg/L of nitrate into the aquifer, the average of nitrate concentration after theend of the two-year periods would increase to 31, 55, and 100mg/L, respectively.Conclusion The obtained results indicated that in a wide area of the saturated aquifer nitrate concentrationwas below than national standards. Furthermore, high nitrate concentrations were due to the penetratingof the sewage into the aquifer. The outputs of the GMS model suggestd that these conditionscould lead to more contamination in central parts of the aquifer.

【 授权许可】

Unknown