This study was conducted in two phases. The first objective was to evaluate the effect of different concentrations of moringa seed when used in extract form, on turbidity removal of the sewage. The second phase was to assess the effect of addition of different salts (NaCl e KCl) and a base (Ca(OH)2 in the preparation of moringa seed extract, with the best range of removal obtained in phase 1, used as a coagulating agent in removing turbidity from wastewater. According to the results, was concluded that the maximum efficiency in removing turbidity using the moringa seed extract, prepared with both NaCl and with KCl, was obtained at a concentration of 2 g L-1; the three substances used in the experiment, the Ca(OH)2 was demonstrated that the ability to leverage best coagulant action of Moringa oleifera seeds; the addition of the isolated extract of seeds of Moringa oleifera can also be found effective in removing the turbidity of the sewage, however, it is not feasible due to the wide availability of area needed for the treatment of sewage from a small community.
wastewater; natural coagulants; urban effluents
