Tratamento de esgoto sanitário utilizando filtro orgânico seguido de coagulação com extrato de sementes de moringa preparado com Ca(OH)2

Abstract

Among the forms of primary wastewater treatment, organic filters have stood out due to the high efficiency in the removal of pollutants, the low cost of acquisition and the possibility of being submitted to composting after its use.It is aimed was to evaluate the efficiency of the filtration process of domestic sewage in gross sawdust, with and without exclusion of the first two pore volumes, followed by coagulation, using the moringa seed extract prepared with Ca(OH)2. Samples of the raw sewage, subjected to filtration with or without the exclusion of the first two pore volumes followed by coagulation and only subjected to filtration with or without the exclusion of the first two pore volumes were assayed for concentration of the TS,TFS, TVS, TSS, FSS, VSS and the values of electrical conductivity and turbidity. In all measured physical variables , except the variables TSS , VSS and turbidity, the processing excluding the first two pore volumes followed by coagulation (F(E)+C) gave lower values effluent compared to treatment in which this was not done (F(SE)+C). Substances solubilized in the organic filter material of the coagulation process hampered by the pitcher seed extract prepared in Ca(OH)2, providing little or no removal efficiency of sewage solids.