آب زیر زمینی

Open Access Article

1 - The study of microbial pollution in ground water resources in Islamshar region
Amir Hesam i Hasan Mohammad Reza Khani Mojtaba Sayyadi Valiollah Ghadami Hamid Reza Khastoo

Islamshahr is located 30 km away from the capital. Over the past decades, it has grown quickly, but irregularly; a growth which has led to the pollution of ground water at which those living in the region have protested. No doubt, it is their right to have access to pur More

Islamshahr is located 30 km away from the capital. Over the past decades, it has grown quickly, but irregularly; a growth which has led to the pollution of ground water at which those living in the region have protested. No doubt, it is their right to have access to pure healthy water. Since the only source of drinking water provision for the villages of Islamshahr is ground water resources (i.e., wells), it is obviously important to study the quality of the water of these wells. In this research, which extended for 14 months from December 2005 to January 2006, the quality of drinking water of the region from the microbial point of view was determined twice through sampling and bacterial tests on the water of 14 wells situated in the residential areas of villages. Coliform pollution is reported in Nezamabad, Raziabad, Rrahimabad-shokrabad, Islamabad and Jafarabad Jangal villages. The excremental coliform pollution is not seen in the area except for one case in Islamabad village. As microbial pollution exists in some wells and as the only source of drinking water in Islamshahr is ground water, it is necessary to always pay attention to the quality of drinking water in this area. Manuscript profile

Open Access Article

2 - Parameters of predicted changes in the Electrical Conductivity of groundwater in Tehran city with the help of neural network
Naser Mehrdadi Gholam Reza Nabi Bidhendi Akbar Baghvand Hamid Zare Abyaneh Pouyan Abbasi Maedeh

In an attempt to examine the quality of ground water in Tehran with respect to the consumption pattern in the last ten years for 71 examination point, three distinct neural networks of different Electrical Conductivity (EC),   input and output parameters were More

In an attempt to examine the quality of ground water in Tehran with respect to the consumption pattern in the last ten years for 71 examination point, three distinct neural networks of different Electrical Conductivity (EC),   input and output parameters were set out . It is observed that, in order to forecast with a great deal of trial and error, the tangent algorithms with the momentum-training algorithm turns out to be less error. As the number of the input parameters is reduced and the training algorithm is fixed with momentum and the stimulating algorithm gives way to the tangent algorithm, error falls off.  Finally, three model with one hidden layer, the momentum training algorithms and the stimulating tangent was constructed. The  maximum error occurring implies the maximum determination coefficient of 0.986 that its connected to models 1 and 3. Moreover, in line with the neural network laid out in one layer, the minimum normal root mean square error (NRMSE) is supposed to run out at 0.110 in models 1 and 3. According to lesser input parameter of model number 2 and very close approximation to this two models (1and 3) with maximum determination coefficient of 0.96 and the minimum normal root mean square error (NRMSE) 0.176 can be a very close approximation and can decrease inputs parameters and experience for Measurement of input parameters and the estimate is supposed to be excellently acceptable. As regards the effect of the parameters on the forecast made, the neural network involves the predominance of the two sulphate and chloride ions over the sodium parameter. Manuscript profile

Open Access Article

3 - The Quality Variation of Groundwater in Malayer City with an Emphasis on the Impacts of Agricultural Land Use on the Quality of Water
Mohamad Sakizadeh

The aim of this study was to investigate the quality of groundwater in a semi-arid environment area in Malayer,Hamedan Province, with respect to a four-year monitoring data using water quality index(WQI) with  an emphasis on the agricultural land use 's impacts on More

The aim of this study was to investigate the quality of groundwater in a semi-arid environment area in Malayer,Hamedan Province, with respect to a four-year monitoring data using water quality index(WQI) with  an emphasis on the agricultural land use 's impacts on the water quality. The monitoring data related to 14     water quality parameters associated with 26 sampling wells in 2012-2013 and 19 sampling wells in 2010-2011 were provided. The amount of chlorine residue in 50%percent's of the stations was zero. In addition, the fluoride in 14 stations was less than 0.5 mg/l and for 80.7 percent's of the stations the nitrate values were higher than 13 mg/l. Although, there was a significant difference between the level of some parameters between these two time periods, however, this difference was not that much noticeable.76.9 percent's of the stations were slightly to moderately polluted based on the results of water quality index. As a whole, the amount of nitrate in 21 wells (80.7 percent) was higher than the human induced standard level (13 mg/l) and in two wells were higher than the WHO permissible level (40 mg/l).The regional change of nitrate was increasing from North West to the south east part of the area. Although the overall quality of groundwater has not deteriorated according to WQI but there is a health risk of water for local people especially that is associated with the results of nitrate in the study area. Manuscript profile

Open Access Article

4 - Evaluation and presentation of solutions to reduce heavy metals in groundwater of Garmsar plain
Moslem Soltanian Hossein Hassanpour Darvishi Seyed Habib Musavi Jahromi Mohammad Nasri

Iran is one of the water-scarce countries in the world. The management of available water resources is one of the most important issues in water engineering. Part of the water in the surface and underground is combined with heavy metals and their quality is reduced. Thi More

Iran is one of the water-scarce countries in the world. The management of available water resources is one of the most important issues in water engineering. Part of the water in the surface and underground is combined with heavy metals and their quality is reduced. This article examines the quality of water resources in Garmsar plain. The required data was obtained in the field from wells and soil of the region and GMS software was used for modeling. In the following, a solution is presented to improve the existing situation and the result is compared with the current situation. The results showed that Scenario 2 had the greatest impact on the reduction of heavy metals and on the other hand Scenario 4 had the least impact on the values. If the solution is used, the amount of heavy metals in the water of Garmsar plain will be reduced. Manuscript profile

Open Access Article

5 - Assessing the potential of groundwater resources quality in the villages of Damavand city
maryam Zerang Lida Salimi Mojtaba Sayadi

Awareness of the quality of water resources is essential for assessing pollution trends for each region. The study area is located in the villages of Damavand city in Tehran, which is used to study the water quality parameters . Within 8 months , from January to August More

Awareness of the quality of water resources is essential for assessing pollution trends for each region. The study area is located in the villages of Damavand city in Tehran, which is used to study the water quality parameters . Within 8 months , from January to August 2016, has focused on sampling and measuring physical parameters (Ec, TDS, turbidity, pH, hardness and alkalinity) of the water from 11 wells in the villages of Damavand city, which was chosen according to the location of the village's residential texture and its proximity to agricultural areas as sample wells. Also, by sampling and analyzing for two times, the quality of each parameter in the studied area and finally a qualitative map for each parameter was prepared. The results of this study suggest that given the fact that the southern marginal areas of Damavand area, especially the village of Wadan, have the highest concentration in most water quality parameters, this area can be considered as a narrow zone of high-risk man-made pollution hazard due to the rise of the rock floor and reduced permeability. In addition, the state of governance of the village of Wadan at the end of sedimentation basin has caused the role of the effectiveness of natural (geological) and hydrogeological factors in this section to be quite evident, the effects of which are increasing the concentration of physical parameters in this area.  Due to the fact that some of the qualitative parameters have been observed in the groundwater resources of the area and, on the other hand, the only source of water supply in the Damavand area is groundwater, it is necessary that the quality of drinking water of the inhabitants of the area should always be considered. Manuscript profile

Open Access Article

6 - Assessment of application the artificial recharges methods of aquifer of Imamzadeh Jafar plain in Gachsaran-southwest of Iran
Khodarahm Shafiei Motlagh Naser Ebadati

Before feeling water -shortage crisis human has understood the importance of water From the religioustexts. Considering recent conditions of the world the water will replace most recent boundaries, atfuture. Imamzadeh Jaafar plain is located 5 kilometers northeast of Ga More

Before feeling water -shortage crisis human has understood the importance of water From the religioustexts. Considering recent conditions of the world the water will replace most recent boundaries, atfuture. Imamzadeh Jaafar plain is located 5 kilometers northeast of Gachsaran, south of Kohgilooye andBoerahmad province. The plain has 61km 2 area extents and contains two, alluvial and carbonateaquifers. These aquifers supply the water needs, agricultural, industrial and domestic. Highly exploitation andtransportation of groundwater resources, especially by National Oil Company, caused highly drawdown inalluvial aquifer, 1.85m in a 5 years period from 1361 to 1365 as reported by Mahab Ghods ConsultingEngineers. There are two artificial recharge projects, 1 flood spreading system and 1 recharge pondssystem, in the plain. To present the future water resources management program the hydrogeologicalbehaviors of the alluvial aquifer and the effects of artificial recharge must be evaluated. To develop theconceptual model of aquifer required information, meteorological, water level in the observationwells, depth to bedrock, hydrodynamic coefficients, topography, water resources and …, were collected, fieldsurveys were performed and required maps were prepared. Using conceptual model and MODFLOWPMWIN code the mathematical model of the plain was calibrated against water year 1380 -81 and thenverified against water year 1384 - 85. The verified model was used to predict future conditions ofaquifer. The results implied the rapid response of aquifer to precipitation due to high aquifertransmissivity, positive water budget at year 1385 comparing year 65, change of direction of groundwaterflow from plain outlet to the center of plain in response to highly exploitation at the center ofplain, water level in the wells located downward the flood spreading system will raise as 1 to 6m andwater level in t he wells located downward the recharge pond system will lower as 1 to 4m. Manuscript profile

Open Access Article

7 - تأثیر پدیده‌های ژئومورفولوژی بر منابع آب زیرزمینی(مطالعه موردی: دشت سهرین زنجان)
فریده اسدیان جعفر خلفی

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