Riddance of spent dye from Textile Runoff

Textile effluents contain toxic and non-bio-degradable contents due to the high concentration of residual dyes. They impart colour to the waste water which hinders sunlight penetration and disturbs the ecosystem of water. The treatment of the textile waste water with biodegradable polymers has attained a vital importance as they are more environmental friendly and the sludge produced is bio-degradable due to their organic composition and may act as a nutrient for the micro-organisms. The aim of present experimental investigations was to make an effort to develop a feasible process for the removal of reactive dyes from the textile waste water using a plant based polymer (Potato Starch).  Coagulation/flocculation studies were performed on a lab scale using jar-test apparatus. The dye removal was determined in terms of percentage reduction in turbidity of the treated solution. The effect of parameters, like coagulant dosage, temperature and pH, on percentage turbidity reduction, total dissolve solids (TSD) reduction and Sludge volume index (SVI) were graphically represented and critically discussed. The results indicate that the maximum dye removal was observed up to 36 %. &nbsp