IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 11, Issue 4 Ver. IV (Jul- Aug. 2014), PP 55-58 www.iosrjournals.org www.iosrjournals.org 55 | Page Performance Evaluation of Effluent Treatment Plant for Textile Mill at Ramtek, MS, India Swati A. Karekar 1 , M. P. Bhorkar 2 , Dr. V. P. Thergaonkar 1. IVSem (M.Tech Env. Engg), GHRCE, Nagpur 2. Asst. Prof. (Civil Engg., Department), GHRCE, Nagpur 3. Ex. NEERI Scientist, Enviro Techno Consult, Nagpur Abstract: The present study has been undertaken to evaluate performance efficiency of an Effluent Treatment Plant (ETP) of a Textile industry located at Ramtek, Nagpur (Maharashtra). An existing ETP is operating on biological treatment method (extended aeration activated sludge system) followed by tertiary treatment plant (R.O), with an average inflow of 30m 3 /hr. Wastewater is analyzed for major parameters such as pH, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Dissolved Solid (TDS), Total Solid (TS), Total Suspended Solid (TSS) and Alkalinity. The effluent samples were collected from each units of ETP on a monthly basis for a certain period. A jar test was also conducted to determine the optimum dose of alum with respect to COD removal. After an experimentation, it was found at 400 to 500 mg/l dose of alum 42.48% COD reduction was achieved. The COD, BOD, TS and alkalinity after biological treatment reduces significantly, except TDS & TSS having very low reduction of 44% & 45% respectively. Overall treatment & analysis for treated effluent (from RO) describes, most of all the parameters were found within the permissible limit of Maharashtra Pollution Control Board. (MPCB) Keywords: ETP, Chemical Parameters, % removal Efficiency, optimum dose, MPCB I. Introduction The textile industry is one of the leading sectors in the Indian economy as it contributes nearly 14% to the total industrial production. The untreated textile wastewater cause rapid depletion of dissolved oxygen due to its high BOD value, if it is directly discharge into the surface water. The effluent with high levels of BOD and COD values are highly toxic for biological life. The high alkalinity and traces of chromium which is employed in dyes adversely affect the aquatic life and also interferes with the biological treatment process (Desai P. A. et al., 2011). Wastewater contaminated by dyes represents a relevant issue associated with several industries. Dyes, even at very low concentrations, reduce wastewater transparency and oxygen solubility and are often toxic and recalcitrant; moreover, these chemicals are toxic, carcinogenic or mutagenic for various organisms (P. U. Singare et al., 2014). Azo dyes are the most widely used dyes in industry & commonly used for cotton dyeing (S. Sen et al.,). Textile wastewater is one of the industrial wastewater which is very difficult to deal, the difficulty stems is due to large variability of characteristics in those wastewater (Sheng et al.,). India an average textile mill producing 60×10 4 m of fabric per day is likely to discharge approximately 1.5 MLD of effluent (G.Gnanapragasam. et. al.). The quality of such effluent can be analyzed by their physico-chemical and biological analysis. Monitoring of the environmental parameters of the effluent would allow having, at any time, a precise idea on performance evaluation of ETP and if necessary, appropriate measures may be undertaken to prevent adverse impact on environment (sumitkumar Patel etal.). The efficiency of individual units of an effluent treatment plants determines the overall performance of the plant and the final effluent quality (Khan et al.). Textile industry is a water intense industry consumes large quantities of water and thus produces large volume of wastewater during its manufacturing steps like dyeing, mercerizing, bleaching, and finish process. II. Materials And Methods 2.1. Study area The study was carried out for ETP of a textile mill at Ramtek near Nagpur city, having latitude & longitude of 21º18ʹ56.95̋ N and 79º29ʹ19.01̋ E respectively. The Total area occupied by the mill is 44.6 ha, out of which 0.104ha is allotted for Effluent Treatment Plant (ETP), 5 ha for Power Plant and remaining for textile unit, residential colony, stores etc. Water is supplied to the mill from Khindsi Lake and Canal near Ramtek. About 800-900m 3 /d water is required for manufacturing process, and the total generation of waste water from the textile mill is about 700-800m 3 /d. Recovered quantity of water after tertiary treatment varies between 400 and 670m 3 /d.