Coagulation-flocculation technique for domestic wastewater treatment in the city of Ain Aouda, Rabat, Morocco

The goal of this study was to investigate the performance coagulation-flocculation, and sedimentation tests reduce contaminant concentrations in domestic wastewater ecologically acceptable levels. were performed at (ONEE) laboratory using a jar test apparatus (GPB FLCDidatec, France) for enhancing primary treatment effluent from plant Ain Aouda City, Rabat, Morocco. Aluminum sulphate Al 2 (SO 4 ) 3 .18H O (termed alum) employed as coagulant study. impact doses pH optimum dosage on process coagulation studied conditions optimized obtain best removal pollutants. evolution physico-chemical parameters pre-and post-treatment monitored determine efficacy process. turbidity total suspended solids (TSS) indicators treatment’s concentration (150mg/L) within 7. Laboratory have shown 98.4% turbidity, 97% initial 121 NTU, 220 mg/L respectively. Also, it has good efficiency COD, BOD5 order 83%, 77% 340 mg/L, 150 Following tests, examination main revealed that degree contamination had decreased. This is confirmed Aluminium proven its effectiveness