Wastes released by tanneries at Patrocínio Paulista, São Paulo State, Brazil

Abstract

This investigation was carried out within the Paraná sedimentary basin, Brazil, and involved the sampling of sludge and residuary waters that were collected from reservoirs/decantation ponds settled in two tanneries situated at Patrocínio Paulista, São Paulo State. Two samples from each tannery were collected, stored in appropriate flasks and transported to the LABIDRO for chemical analysis. The results confirmed that leather production is an activity with high environmental impact, despite improvements that may be achieved by tanneries.