Treatment of composite wastewater of a cotton textile mill by thermolysis and coagulation

Effluent treatment in denim and jeans manufacture

“…This study showed that chemical pretreatment must be carried out under operating conditions that increase wastewater biodegradability, as the overall removal efficiencies are considerably higher than those corresponding to conditions that maximise colour removal (for example), although there is a very small penalty in the overall colour removal performance (Kumar et al, 2008b).…”

Treatment of desizing wastewater by catalytic thermal treatment and coagulation

“…Pulp and paper mill effluent characteristics are given by Garg et al [22], alcohol distillery waste characteristics are presented by Lele et al [23] whereas composite and dyeing wastewaters are presented by Kumar et al [7].…”

“…Thermolysis is a chemical process, by which a substance is decomposed into other substances by use of heat [4][5][6]. The catalytic thermolysis of desizing wastewater at 95 • C and autogenous pressure, in the presence of CuSO 4 catalyst, has proved its efficiency in reducing the COD by about 71.6% and color by about 82.7%, with substantial energy recovery in terms of solid residue [7]. Surfactants and dyes with high molecular weights are successfully removed by coagulation/flocculation processes followed by sedimentation, flotation and filtration.…”

Removal of synthetic reactive dyes from textile wastewater by Sorel's cement

“…Some of these alternative adsorbents, though easily available and cost effective, do not effect complete dye colour removal compared with activated carbon [18][19][20]24]. A promising approach for effective colour removal from composite wastewater of cotton textile mill involved catalytic thermal treatment accompanied with coagulation has been suggested [27,28].…”