Weaknesses of moringa oleifera use in water treatment

Moringa oleifera is the most common natural water coagulant that concerned by many researchers. In this study coagulation-flocculation apparatus was employed, low turbidity water 32 NTU and Moringaseed extract were used to investigate the optimum dosage for turbidity removal, settling time, total organic carbon (TOC) and pathogen removal. Different concentrations 0, 200, 300, 400, 500 and 600 ml/L were applied. The results showed that, the removal efficiency increased with the concentration of the dosage, and the permissible limit according to WHO was achieved at 300ml/L. The optimum time for the settlement was 1 hour for different turbidity levels 29.6, 236 and 543 NTU. Total organic carbon increased steadily with the increase of the dosage and the final concentrations in the treated water were 12.43,17.51, 23.36, 27.05 and 34.78 ml/Lrespectively. A considerable amount of pathogens was removed.