The efficiency of a hybrid flocculation/UF process for a real dye-house effluent using hydrophilic and hydrophobic membranes

► A real dye-house effluent was treated, containing disperse and metal-complex dyes. ► The colour and COD removal efficiencies were up to 98% and 65%, respectively. ► The flux decline is attributed to the cake formation. ► When the UF follows the flocculation, a higher flux results.