en تخصصي Special مقاله اصیل Original Article <div dir="ltr" style="text-align: justify;">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.<br> 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<br> influent at the Karaj wastewater treatment facility. Rates of turbidity, TSS, COD, nitrate, and phosphate removal under different conditions were determined.</div> <div dir="ltr" style="text-align: justify;">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.<br> 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.</div> Electrical coagulation process, Wastewater treatment 157 162 http://ehemj.com/browse.php?a_code=A-10-1-84&slc_lang=en&sid=1 Samad Gholami Yengejeh 10031947532846003267 10031947532846003267 No Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran Hossein Jafari Mansoorian 10031947532846003268 10031947532846003268 No Department of Environmental Health, School of Public Health, Kerman University of Medical Science, Kerman, Iran Gharib Majidi 10031947532846003269 10031947532846003269 No Hamedan Branch, Islamic Azad University, Hamedan, Iran Ahmad Reza Yari yari1ahr@gmail.com 10031947532846003270 10031947532846003270 Yes Qom University of Medical Sciences, Qom, Iran Narges Khanjani 10031947532846003271 10031947532846003271 No Department of Environmental Health Engineering, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran