Stahl is one of the world’s leading suppliers of leather processing products and also has strong positions in other selected market niche areas with proprietary products such as Permuthane®. Vivekananda Institute of Algal Technology has signed an MOU with STAHL INDIA chemicals to treat the effluent using mico algal technology. The raw effluent is treated with Chlorella sp to remove heavy metals and to prevent sludge formation. Pilot scale studies were conducted with encouraging results. Field trials using slope tank is in progress for scaling up.