EFICIÊNCIA DA FILTRAÇÃO DE EFLUENTES EM LEITO DE AREIA EM FUNÇÃO DA VARIAÇÃO DA GRANULOMETRIA E DA TAXA DE APLICAÇÃO SUPERFICIAL

Abstract

The process of wastewater treatment by filtration is considered a simplified technology of effluent treatment, however, its effectiveness in terms of removal of COD and TSS is well known. The objective of this work is to demonstrate the efficiency of the use of the filtering process in sand bed on removal of COD and TSS. Different size grains in the sand bed were employed and different application rates of effluent. This work seeks to develop technological proposals in the form of ditches or filtration filters more effective and simple operation and maintenance for the treatment of effluent by filtration. Removal values were obtained of COD to the tune of up to 60% at the premises in bench-scale simulating filters or filtration ditches used in this work. The effluent was synthetic, based on protein and/or glucose with or without cultures of bacteria and fungi.

Index Terms – effluent filtration, sand bed, filtration rate, TSS removal, COD removal.