Life sciences Leaflets11:97-102,2012 FREE DOWNLOAD ISSN 2277-4297(Print)0976–1098(Online) http://lifesciencesleaflets.ning.com/ PEER-REVIEWED Page | 97 Published on: 1 st Nov 2012 BIOREMEDIATION OF REAL TEXTILE WASTE WATER BY SERRATIA MARCESCENS NIDHI GONDALIYA AND SAMIR PARIKH SMPANCHAL SCIENCE COLLEGE, TALOD nidhi13285gondaliya@gmail.com ABSTRACT: The removal of color from textile industry waste water represents a major environmental concern. The control of this waste water has become of increasing importance in recent years. The main aim of the entire work was to develop a biological process for the treatment of the textile industrial effluent. The Commercial strain of Serratia marcescens was selected due to its ability to decolorizing textile dye and COD removal. Study on the efficiency of this bacterial strain on real textile waste water treatment from textile industrial was performed at room temperature for 10 days. Serratia marcescens was able to decolorize real textile waste water containing dyes up to 81.08 ± 0.65 % and reduced COD from 3570mg/l to 1100mg/l. KEY WORD: Bioremediation, Real textile, Waste water, Serratia marcescens. INTRODUCTION: The main aim of the entire work was to develop a biological process for the treatment of the textile industrial effluent. Approximately 20% of dyes losses enter the environment through effluents from wastewater treatment plants (Kirk and Othmer, 1993). In India, an average mill discharges about 1.5 million liters of contaminated effluent per day, which leads to chronic and acute toxicity (Sandhya et al, 2005). On the other hand, certain azo dyes exhibit toxic effects to microbial populations and can be toxic, mutagenic and/or carcinogenic to animals (Pavan et al, 2008). Also, the possible contamination of drinking water supplies is of concern because azo dyes are known to be enzymatically degraded in the human digestive system, producing carcinogenic substances (Kirk and Othmer, 1993). Real textile dye effluents contain not only dyes but also salts, sometimes at very high ionic strength and extreme pH values, chelating agents, precursors, byproducts, surfactants, etc. Dyes of different structures are often used in the textile processing industry, and therefore, the effluents from the industry are markedly variable in composition (Kalyani et al, 2009). The difficulties encountered in the wastewater treatment resulting from dyeing operations lies in the wide variability of the dyes used and in the