The effluent from the Oil Refineries and Electroplating Industries is generally low in solids content and contains metals like chromium and manganese.The effluent is preheated and then fed to the Multiple Effect Falling Film Evaporator for concentration. After concentration, the concentrate is dried using an Agitated Thin Film Dryer. This dried powder can be disposed of as solid waste for land fill. The condensate obtained from the evaporator is clean and colourless which can be used in the plant as process water.