Water quality

List of Articles Water quality

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1 - Evaluation of groundwater quality in Dozdozan plain using Fuzzy Inference Model for agricultural uses
Hossein Rajabpour Jafar Edraki GholamReza Ahmadzadeh

Dozdozan plain is located in 80 kilometers south-east of Tabriz and is one of the most fertile plains of East Azerbaijan. The main economy of its residents is based on agriculture and as a result of the scarcity of surface water resources; agricultural sector is the More

Dozdozan plain is located in 80 kilometers south-east of Tabriz and is one of the most fertile plains of East Azerbaijan. The main economy of its residents is based on agriculture and as a result of the scarcity of surface water resources; agricultural sector is the major consumer of ground water. In this study, the application of Fuzzy Set theory for evaluation of ground water quality for agricultural purposes is used. In this research, seven ground water parameters from 50 wells were measured from 2012 to 2013 in Dozdozan plain. Based on Fuzzy Water Quality Model, the ground-water quality is classified in three categories; desirable, acceptable and unacceptable. Results showed only 17 samples from 50 wells come in desirable class with certainty level of 63.6 to 84 percent. About 28 samples classified in the acceptable category whose certainty level ranged from 48 to 64.5 percent and the remaining five samples were in not acceptable category with the maximum certainty level of 13.7 percent. Manuscript profile
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2 - Ability of Felmann wells to improve the physical and microbial parameters of river water
Mojtaba G.Mahmoodlu Mostfa Seyed Seyd Mostafa Khezri Gholam Abbas Fanaei Kheirabad

Riverbank filtration can be used as an effective and low-cost method for water treatment of rivers for drinking purposes. In alluvial land consisting of loose sediments (e.g., sand or gravel) with a water table near land surface, one of the most economical methods for e More

Riverbank filtration can be used as an effective and low-cost method for water treatment of rivers for drinking purposes. In alluvial land consisting of loose sediments (e.g., sand or gravel) with a water table near land surface, one of the most economical methods for extracting water in large volumes is the use of wells with large diameter such as Felmann Well. In this study, we investigated the effect of Felmann Wells and riverbank filtration process on improving the water quality parameters of surface water. For this, Doogh River and a Felmann Well were sampled simultaneously within a 5-month period. SPSS software and T-tset were used to determine the significant difference between data obtained from chemical analysis. Comparison of water quality parameters of Doogh River and Felmann Well showed that riverbank filtration can play an important role in reducing the physical and biological parameters of water in Felmann Well drilled near the river. For drinking water purpose, the water quality of both Doogh River and Felmann Well was investigated using WQI (Water Quality Index). Hence, the WQI for Doogh River water varied from 50 to 57, which indicated the average quality of the water of the Doogh River. While, WQI value varied from 64 and 75 for the Felmann well representing a good water quality in the well. Results of this study showed that the Felmann wells which were drilled near the riverbank can play an important role in improving the water quality parameters of surface water for drinking purposes. Manuscript profile
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3 - Hydrogeochemistry of Gorganrood river in Gonbad-e-Kavoos district, Golestan province
Abbas Teimori گیتی فرقانی تهرانی Hadi Jabari Abdol Rez Kaboli

Rivers are the key resources for drinking and agricultural purposes and the assessment of water quality is very important. In this study, a detailed investigation has been made for identifying the natural and anthropogenic processes that offected the quality of Gorganro More

Rivers are the key resources for drinking and agricultural purposes and the assessment of water quality is very important. In this study, a detailed investigation has been made for identifying the natural and anthropogenic processes that offected the quality of Gorganrood and its tributaries water in the Gonbad-e-Kavoos district. The Gorganrood is the longest river in the Golestan province (NE of Iran). During previous years, various wastewaters (i.e. domestic, agricultural and industrial) produced in Gonbad-e-Kavoos district have been discharged into the Gorganrood. To evaluate the chemical quality of water in the study area, 37 water and 6 wastewater samples were collected. The physicochemical parameters including pH and EC were determined in situ by an EC/pH meters. The concentration of major ions was measured using the standard methods. The piper and Wilcox diagrams were used to assess the water type and water quality for irrigation, respectively. Scatter diagrams were used to assess the hydrochemical processes influencing the chemistry of the water samples. Results of this study indicate that the pH and EC values of the water samples decrease in the city district. This is due to the discharge of urban wastewaters with lower EC and pH values which leads to the dilution of the river water. The lower concentration of nitrate in water samples collected in the city district is probably due to the denitrification process. Results show that the prevailing water types of Gorganrood and its tributaries are Na-SO42- and Na-HCO3-, respectively. The entrance of tributaries enhances the Gorganrood water quality for drinking and agricultural puposes. Along the river course, the natural processes of halite- gypsum- anhydrite dissolution and ion exchange, as well as anthropogenic factors (discharge of agricultural and urban wastewaters) deteriorate the water quality. Manuscript profile
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4 - Hydrochemical evaluation and qualitative deterioration assessment of Gorganrud River
Mojtaba G.Mahmoodlu Nader Jandaghi Maryam Sayadi
20.1001.1.17357128.1399.14.55.1.2

In this study, the hydrochemical evolution and qualitative deterioration of Gorganrud River water were investigated in a distance of approximately 100 km from the northern margin of the Alborz highlands to Gorgan Gulf. For this purpose, the analysis results of elven phy More

In this study, the hydrochemical evolution and qualitative deterioration of Gorganrud River water were investigated in a distance of approximately 100 km from the northern margin of the Alborz highlands to Gorgan Gulf. For this purpose, the analysis results of elven physicochemical parameters related to four hydrometric stations over a ten-year statistical period were used. Gibbs, Stiff, Piper, Durov diagrams as well as five saturation indices for carbonate, sulfate and chloride minerals were used to study the hydrochemical evolution of the river. Water quality changes in drinking (using Schoeller Diagram), agricultural (using Wilcox Diagram), and industrial (using corrosion indices) sectors along the Gorganrud River were also investigated. In this study, F test and hierarchical cluster analysis were used to analyze the variance of data and the number of factors affecting water hydrochemistry, respectively. The results showed that rock-water reaction, evaporation, and Gorgan Gulf saline water intrusion are the most important factors controlling the river water chemistry. Also, the water dominant type of Gorganrud River at the highlands margin is bicarbonate and as it enters the plain, it tends to reach full maturity, the type of sodium chloride. At all stations, river water is supersaturated with respect to calcite and dolomite but it is under saturated respect to anhydrite, gypsum and halite. However, evaporite minerals saturation increases in the flow direction. The quality of water for drinking and agriculture is suitable at the margins of highlands and as it enters the plain and the path to the Gorgan Gulf decreases sharply. According to the statistical analysis results, the most changes in physicochemical parameters are obtained between the Lazoure Station at the highlands margin and the Qazaghli Station in the middle part of the plain and after that no significant changes were observed between the quality parameters until Gorganroud outlet. Manuscript profile

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