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)
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