Phosphorous removal from wastewater effluent using electro-coagulation by aluminum and iron plates

In this study, phosphorous removal from wastewater effluent performed using electro-coagulation by aluminum and iron plates. This work had 3step: assessment of electrocoagulation for phosphate removal with phosphate concentration based on wastewater effluent in standard conditions (6mg/l), and evaluation of pH (3, 5.5, 7, 8.5, 10), voltage (20 V, 30 V, 40 V), and contact time(10 min, 20 min, 40 min, 60 min) for elucidation of best condition in phosphate removal; evaluation of the process according to the best conditions obtained in step 1 in different concentrations of 4, 8, and 10 mg/l; test of optimum conditions obtained in first two steps on real wastewater. Result obtained from synthetic waste water showed that the most effective phosphate removal with AL/AL plates is >99% in pH 8.5 and 40 V and 40 min after starting process and for IR/IR plates is >99% in pH 5.5 and 40 V and 40 min after starting process. Result obtained from 2th step revealed that the removal efficiency was high whenever concentration of phosphate decreased and efficiency of removal with AL plates is higher than IR plates. In 3th step, efficiency of phosphorous removal using electro-coagulation assessed and efficiency of this step with aluminum plates on real wastewater under different conditions is >99%.