Análise de reuso de efluente oriundo de cabine de pintura tratado por flocodecantação e processo de separação por membranas

Abstract

Increasingly, effluent treatment practices have been applied in order to reduce the use of natural sources and to reuse water. Therefore, a technical feasibility study was carried out for the reuse of an effluent from a paint booth with a water curtain. The present work aimed to evaluate and perform the treatment of the nanofiltration membrane, in order to verify the best treatment technique for the efficiency of the physicochemical treatment. In order to be treated with the best study, practical tests were carried out on the effluent obtained, in order to compare the results. To do this, compare pH, DQ, total solids, turbidity and color. The best result obtained for the physical-chemical treatment was using the chemical Aluminum coagulant 1735 mg/L7, with the concentrated hydroxide flocculant, at a concentration of 159 mg/L. Already, for nanofiltration, the best result is in the filtration and in the time of 40 minutes. The results of the treatment techniques were studied in the effluent, as well as in the literature.