Coagulation/Floculation Of Slaughter Effluent Using Moringa Oleifera Lam as A Coagulant

Abstract

Objective: In view of the growing need for low-cost, easily accessible alternative wastewater treatments, this study aimed to evaluate the influence of a natural product (Moringa oleifera lam), when used as a coagulant, on the removal of turbidity and color from a pig slaughterhouse effluent.   Method/design/approach: The coagulant was prepared in saline solution (NaCl - 1M) and saline solution (KCl - 1M), all the coagulant solutions were prepared at the time of the test. In order to assess the effect of the coagulant on the effluent, coagulation/flocculation tests were carried out using the Jar- test apparatus, evaluating the effects of dosages of 200, 500, 1000, 1500 and 2000 mg/L of Moringa in saline solution (NaCl and KCl). The parameters analyzed were color and turbidity.   Results and conclusion: According to the results of the statistical analysis, the optimum dosages obtained for the coagulants Moringa NaCl and Moringa KCl were 1000 and 1500 mg/L, respectively. With these dosages, removal of 63.9% for turbidity and 56.3% for color was observed when using NaCl saline solution and removal of 57.4% for turbidity and 45.2% for color when using the coagulant in KCl saline solution.   Implications of the research: The main implication of the study is a proposal to evaluate the efficiency of the coagulation/flocculation/decantation process of pig slaughterhouse effluent, using natural coagulants, in the removal of organic matter. Due to the many problems caused by the use of chemical coagulants, such as aluminum sulfate and aluminum polychloride, which are used worldwide, there is a great demand for an alternative coagulant that is mainly natural.   Originality/value: The study seeks to contribute to improving the management of water resources, in terms of local management.  The use of natural coagulants, produced locally and at a low cost, can alleviate the problems linked to the discharge of untreated wastewater into receiving water bodies and the consumption of non-potable water.