Because of the effect of this parameter on retention time and removal efficiency, a higher power inputs (over than 100 Wdm-3) was used. Results of wastewater treatment at various electrical power inputs can be seen in Fig. 4; and Fig. 5
shows the results of experiments accomplished for comparison the treatment experiments at a constant electrical power input of 375 W dm-3. Finally, Fig. 6 shows the performance of the electro- coagulation system in algae removal at various conditions of treatment.