Avaliação da concentração residual de ferro em efluente têxtil tratado por eletrofloculação

Abstract

In industrial context, the textile industry stands out for being a great generator of effluent. Thus, this study consists in applying the technique of electroflocculation for the treatment of textile effluents. Therefore, the final concentration of iron was studied, based on Resolution 430/2011, for effluent discharge standards. The analyses of the concentration of iron were carried out using the methodology of Standard Methods. Thus, the efficiency of removal of color from the treated effluent was analyzed. All evaluated parameters were carried out in duplicated trials of treated textile effluent as well as of raw textile effluent. The electroflocculation treatment proved to be efficient in both evaluated parameters, since the residual concentration of iron reached values much lower than the value allowed by the legislation, reaching the maximum value of 6.04 mg / L, in contrast to 15 mg / L established in Resolution 430/2011. Moreover, the efficiency in the removal of color showed significant results, reaching 95.83% of efficiency.