9438

8720

كارشناسي ارشد

كشاورزي - مهندسي آب

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1393

دوازده،82ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

جهانگير عابدي كوپايي

حسين سقاييان نژاد

13/10/93

سعيد اسلاميان، محمدرضا مصدقي

مهندسي كشاورزي

ID8720

Evaluating the Groundwater Quality of Najafabad Plain using MODFLOW and DRASTIC Models Elahe Tootian elahetootian @ gmail com Department of Water Engineering College of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisors J Abedi Koupai Prof Koupai@cc iut ac ir Abstract Groundwaters in many parts of the world particularly in dry regions such as Iran are as one of the most important sources of water supply for drinking and irrigation Also in recent years as a result of over explotation and the increasing use of chemicals dissolved in water the groundwater quality has been decreased Therefore due to contamination of these valuable resources it is important to identify the sources of groundwater pollution In Najafabad plains located in Zayanderud river basins despite the existing water supply schemes increasing demand for water and reducing the amount of surface water demand for groundwater has been increased in recent year Undoubtedly for the best understanding of the behavior of the aquifer system a series of field research are necessary In this study the hydrodynamic properties of aquifer were studied and simulated using MODFLOW based on the available data for wells springs precipitation geophysical surveys for a period of 15 years from 1374 to 1389 The results show good agreement between the calculated and observed groundwater static heads In the next section the quality of groundwater in Najafabad plain including EC TDS and SAR were simulated using MODFLOW software code MT3D and compared with Ayers and Wescot criteria and Wilcox diagram The results indicate that this type of chemical parameters in the area were in moderate mode except for the southeast region which needs appropriate management actions The pollution in the area may be originated from chemical fertilizers and pesticide use municipal and industrial waste water discharges into rivers in low land These pollution are mainly located in the center of region Finally a comparison was made between MODFLOW with DRASTIC method Both models estimated the vulnerability of aquifer is low to moderate mode Key words Groundwater Qualitative simulation Najafabad area MODFLOW

جهانگير عابدي كوپايي

حسين سقاييان نژاد

سعيد اسلاميان، محمدرضا مصدقي