Author/Authors :
Yari Ahmad Reza نويسنده Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran , Khanjani Narges نويسنده Assistant Professor of Epidemiology, School of Public Health, Kerman University of Medical Science, Haft Bagh Alavi Highway, Kerman, Iran. , Majidi Gharib نويسنده Qom University of Medical Sciences and Student Research Committee , Jafari Mansoorian Hossein نويسنده Zahedan University of Medical Sciences , Gholami Yengejeh Samad نويسنده Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran Gholami Yengejeh Samad
Abstract :
Background: The reuse of treated municipal wastewater is an important source of water for different ,purposes. This study evaluated the efficiency of the electrocoagulation process in removing turbidity,a total suspended solids (TSS), chemical oxygen demand (COD), nitrate, and phosphate from wastewater at the treatment facility in Karaj, Iran.
Methods: This experimental study was performed at a pilot scale and in a batch system. A 4-liter tank made from safety glass with 4 plate electrodes made from aluminum was unipolarly connected to a direct current power supply with a parallel arrangement. Wastewater samples were taken from the
influent at the Karaj wastewater treatment facility. Rates of turbidity, TSS, COD, nitrate, and phosphate removal under different conditions were determined.
Results: The highest efficiency of COD, TSS, nitrate, turbidity, and phosphate elimination was achieved at a voltage of 30 volts and a reaction time of 30 minutes. The rates were 88.43%, 87.39%, 100%, 80.52%, and 82.69%, respectively.
Conclusion: Based on the results of this study, electrocoagulation is an appropriate method for use in removing nitrate, phosphate, COD, turbidity, and TSS from wastewater.
