Feasibility Studies on Removal Efficacy of Treatment of Textile Effluent Using Natural Coagulants in Erode District

An explorative investigation was conducted for the feasible use of natural coagulants in the treatment
of textile effluent in Erode district of Tamil Nadu (India). In this article, three natural coagulants namely
Moringa oleifera, Tamarina indica, Strychonomous potatorum of 10, 20, 40, 60 and 80 mL dosages
were used to spot the suitable one as primary coagulant. Floc formation in coagulation process had
been studied in the laboratory scale to determine the optimum dosage of natural coagulants. Pre and
post treated textile wastewaters with natural coagulants were considered to evaluate the percentage
removal efficiency on the major pollutants of concern in textile effluent such as pH, turbidity, TSS,
TDS, COD and BOD. Influence of settling time of natural coagulants on the removal of
physiochemical characteristics of textile effluent was studied. From the observed results, the natural
coagulant Moringa oleifera gives better removal efficiencies with respect to turbidity, TSS, TDS, COD
and BOD and appears to be suitable for textile effluent treatment in Erode district, when compared
with Tamarina indica and Strychonomous potatorum. The surface morphology of the untreated textile
effluent and treated textile effluent with optimum dosage of M. oleifera, T. indica and S. potatorum
were observed by means of SEM analysis.