Hamed Valipour - Academia.edu (original) (raw)
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In this paper, quantitative and qualitative changes in groundwater of Najaf Abad Plain were evalu... more In this paper, quantitative and qualitative changes in groundwater of Najaf Abad Plain were evaluated. The quantitative assessment based on data obtained from 48 observation wells showed that the average groundwater level in this plain declined 24.25 meter from 1994 to 2012. Then, the average groundwater level declined averagely 1.28 meter per year. Zonation of the declines in this plain suggested that maximum drop is observed in intermediate aquifer zones. This decline even extends to 85 meters. The minimum drop rate equal to zero was observed in Zayanderood margins. Fifteen operated wells were analyzed physicochemically to evaluate chemical quality of the study area. These evaluations included measuring pH, total hardness (TH), total dissolved solids in water (TDS), electrical conductivity (EC), magnesium (Mg), calcium (Ca), sodium (Na), potassium (K), chloride (Cl), sulfate (SO4), bicarbonate (HCO3). Comparing the results with drinking water quality standards of the World Health ...
So far, numerous studies were conducted in the field of wastewater treatment discharged from trea... more So far, numerous studies were conducted in the field of wastewater treatment discharged from treatment plants using modern techniques in order to achieve output standards in terms of wastewater treatment plants including the U.S Environmental Protection Agency (EPA) and World Health Organization (WHO). Therefore, this study was performed in order to determine the optimal dose, power and efficiency of REDO disinfection system to eliminate or reduce substantially total coliform level in a wastewater treatment plant in Northern Isfahan in 2011. This is an experimental-applied study. For the first time in the Middle East, the effect of four disinfectants such as chlorine (Cl2), chlorine dioxide (ClO2), oxygen (O2) and ozone (O3) produced in the electro-lysis solution of water and salt using REDO device with 200 liters per hour capacity and 118 liters per minute input wastewater flow at pilot and Batch scales was examined in order to determine the optimal dose of disinfectant solution fo...
In this paper, quantitative and qualitative changes in groundwater of Najaf Abad Plain were evalu... more In this paper, quantitative and qualitative changes in groundwater of Najaf Abad Plain were evaluated. The quantitative assessment based on data obtained from 48 observation wells showed that the average groundwater level in this plain declined 24.25 meter from 1994 to 2012. Then, the average groundwater level declined averagely 1.28 meter per year. Zonation of the declines in this plain suggested that maximum drop is observed in intermediate aquifer zones. This decline even extends to 85 meters. The minimum drop rate equal to zero was observed in Zayanderood margins. Fifteen operated wells were analyzed physicochemically to evaluate chemical quality of the study area. These evaluations included measuring pH, total hardness (TH), total dissolved solids in water (TDS), electrical conductivity (EC), magnesium (Mg), calcium (Ca), sodium (Na), potassium (K), chloride (Cl), sulfate (SO4), bicarbonate (HCO3). Comparing the results with drinking water quality standards of the World Health ...
So far, numerous studies were conducted in the field of wastewater treatment discharged from trea... more So far, numerous studies were conducted in the field of wastewater treatment discharged from treatment plants using modern techniques in order to achieve output standards in terms of wastewater treatment plants including the U.S Environmental Protection Agency (EPA) and World Health Organization (WHO). Therefore, this study was performed in order to determine the optimal dose, power and efficiency of REDO disinfection system to eliminate or reduce substantially total coliform level in a wastewater treatment plant in Northern Isfahan in 2011. This is an experimental-applied study. For the first time in the Middle East, the effect of four disinfectants such as chlorine (Cl2), chlorine dioxide (ClO2), oxygen (O2) and ozone (O3) produced in the electro-lysis solution of water and salt using REDO device with 200 liters per hour capacity and 118 liters per minute input wastewater flow at pilot and Batch scales was examined in order to determine the optimal dose of disinfectant solution fo...