• T.Khaleel
• M.Srimurali
• G.Rammohan

Textile industry is one of the water-intensive industries which consume large quantities of water for various processes and discharges equally large volumes of wastewater containing a variety of pollutants. It is estimated that 10-70 litres of water may be required for processing one meter of cloth. There are various treatment techniques to remove dye wastewater pollutants such as physical, chemical, physico-chemical and biological methods, Among Physico-chemical process, Coagulation method is generally applied to treat textile industries, as it is effective in removing color and COD. The present study was performed using jar test apparatus, spectrophotometer and open reflux apparatus with chemical and natural coagulants like alum, ferroussulfate and moringaoliefera, aloevera as coagulants. These are used to increase the size of flocs at various pH values and at various chemical doses. After the process, the residual color and COD, as well as pH of water were measured. The results showed for alum significant increase in color and COD removal to the extent of about 97.01% and 81.39% at an optimum pH of 8.0 for both and at a optimum dosage of 800mg/l, 1100mg/l respectively. For ferroussulfate significant increase in color and COD removal of 63.16% and 67.44% at an optimum pH of 6.0 for both and at a optimum dosage of 1850mg/l, 1300mg/l respectively. In case of moringaoliefera significant increase in color and COD removal of 88.05% and 79.06% at an optimum pH of 10 for both and at a optimum dosage of 2800mg/l, 3600mg/l respectively. Finally aloevera also removes color and COD 50.23% and 48.83% at an optimum pH of 8.0 for both and at a optimum dosage of 1800mg/l, 1400mg/l respectively. In this research comparison was done between natural and chemical coagulants.

Color, COD, jar test apparatus, spectrophotometer, open reflux method, alum, ferrous sulfate, moringaoliefera, Aloevera Coagulation/flocculation, Textile effluents.

"REMOVAL OF COLOR AND COD FROM TEXTILE EFFLUENTS BY USING NATURAL AND CHEMICAL COAGULANTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.126-131, June 2019, Available :http://www.jetir.org/papers/JETIR1906L17.pdf

"REMOVAL OF COLOR AND COD FROM TEXTILE EFFLUENTS BY USING NATURAL AND CHEMICAL COAGULANTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp126-131, June 2019, Available at : http://www.jetir.org/papers/JETIR1906L17.pdf