TREATMENT OF SLAUGHTERHOUSE WASTEWATER USING Moringa oleifera LAM SEEDS AS COAGULANT

Abstract

Both the solution and the suspension of grinded and soaked seeds of Moringa oleifera Lam, were used in order to reduce the absorbance (turbidity) of wastewater from a slaughterhouse. The minimum reaction time obtained was 5 minutes with an absorbancy reduction of 25% for wastewater from the septic tank, and 82% of absorbancy reduction for the wastewater from the pond. In relation to the coagulant dose (seeds suspension), although 25 g/l was more efficient (up to 78% of absorbancy reduction), it was no significative different to the dose of 10 g/l which reached an absorbance removal of 61%.