TARELI - Tannery Wastewater Recycling in Leather Industries
In the leather industry chrome tanning is the most prevalent technique used, resulting in sludge containing high percentage of chromium salt. The main objective of this project was to demonstrate, on an industrial scale, the technical and financial feasibility of recycling the wastewater from tanning baths. This was done through the design, construction and setting-up of a demonstration plant capable of handling the treatment and conditioning of 25 m3 of tanning bath fluid waste per day â€“ to be then reused in the same industrial process. The result was a significant reduction in consumption of natural resources (water and reactive agents) and reduced quantities of chromium in the cleansing sludge and in its salinity.