Investigation of Electro Coagulation Process for Phosphate’ Sulfate’ Nitrate Removal from Sugar Cane

Rivers and water resources polloution caused by uncontrolled industrial wastewater discharge. Precence of high concentration of phosphate ' sulfate and nitrate anions in sugarcane indusrial wastewater ' required treatment of the waste water for nutrients and corrosive substances deletion. This study is an attempt to investigate the effect of electrical current' initial wastewater PH and retention time on phosphate ' sulfate and nitrate pollutants removal of sugarcane industrial wastewater. In this study ' the electro coagulation method with aluminum electodes were applied for wastewater treatment in sugar cane of Hakim Farabi. 6 electrodes – aluminium in vertical position were connected to power supply by monopolar method. Septic tank was selected for sampling. Initial wastewater concentration and PH were measured for phosphate' sulfate and nitrate. Then the effect of three operation parameters: PH(5' 7' 9' 11) electrical potential (10 and 30 volts) and retention time (15' 30' 45' 60 minutes) for phosphate ' sulfate and nitrate removal efficiency have been investigated. The results showed that in equal retention time and different initial PH the removal of phosphate' sulfate and nitrate could be promoted by increasing the electrical potential from 10 volt to 30 volt.. The results indicated that the highest removal efficiency of phosphate was observed in neutral condition and increasing PH decreases phosphate removal. whereas the highest removal efficiency for sulfate and nitrate was observed in alkaline PH .also the results proved that in all condition of PH and voltage' increasing retention time cause increasing in removal percent for phosphate' sulfate and nitrate.