Removal of COD and Color from Dye Waste Water using Combined processes Coagulation, Activated Sludge and Adsorption process
Keywords:
dye wastewater; coagulation; lime; ferrous; activated sludge process; Reactive Blue; Adsorption; activated carbon; industrial wastewater; COD; ColorAbstract
This technical note summarizes the results of Reactive Blue (H3RP) dye wastewater of treatment process aiming at the destruction of the
wastewater’s color by means of coagulation technique using ferrous sulfate and lime, Biological Treatment using Activated Sludge Process and
Adsorption technique using Activated Carbon. All the experiments were run in a pilot plant. Treatment with lime and ferrous sulfate proved to
be very effective in removing the color (70–90%) and part of the COD (35–40%); Activated Sludge process removing the color (10-20%) and
part of the COD (25-30%) and Activated carbon removing the color (5-10%) part of the COD (15-20%) from the dye wastewater. Moreover, the
results showed these combined processes are capable of achieving high COD removal.


