Author(s)

D. Prats, P. Varó, C. Yagüe & M. Rodríguez

Abstract

Colour elimination through oxidation technologies in leather finishing industry waste waters D. Prats, P. Var6, C. Yagiie & M. Rodriguez Department of Chemical Engineering, University of Alicante, Spain. Abstract The leather fmishing industries consume great amounts of water and therefore, important producers of liquid effluents. Waste treatment is mostly limited to homogenisation and sedimentation, although in some cases chemical coagulation and sludge digestion is carried out. This is normally insufficient to comply with the existing legislation. Colour is one of the pollutants common to all these industries. This is a parameter normally difficult to eliminate and furthermore, greater restrictions in the legislation relating to the discharge of industrial residual effluents are being contemplated more and more. In this present work, ozone and ozone with hydrogen peroxide have been studied in order to determine which of them are more effective in the reduction of the colour present in the w

Keywords