Volume No. 5 Issue No.: 3 Page No.: 623-630 January-March 2011

 

PERFORMANCE STUDY OF COMMON EFFLUENT TREATMENT PLANTS OF TEXTILE DYEING UNITS IN KARUR, TAMIL NADU (INDIA)

 

R.Rajamanickam*1 and S. Nagan 2

1. Tamil Nadu Pollution Control Board, Chennai (INDIA)
2. Thiagarajar College of Engineering, Madurai (INDIA)

 

Received on : November 14, 2010

 

ABSTRACT

 

Cotton yarn bleaching and dyeing is one of the major industrial activities in Karur Town, Tamil Nadu, India. The waste water let out from this industry is a major environmental concern. Out of 487 units, 391 units are member in common effluent treatment plant (CETP). 8 CETPs are in operation. The remaining 96 units have provided individual effluent treatment plant (IETP). After treatment the effluent is let into Amaravathi river a tributary of river Cauvery. The quality of effluent discharge from CETPs was monitored for a period one year. The report of analysis reveals that the total dissolved solids, chlorides, bio chemical oxygen demand, and chemical oxygen demand are exceeding the permissible inland surface water discharge standards. The discharge of partially treated effluent has adversely affected the river water quality as well as the groundwater quality. In order to protect the river and the groundwater, Tamil Nadu Pollution Control Board (TNPCB) have directed all the dyeing units to provide Reverse Osmosis (RO) plant with Reject Management System (RMS) and recycle the entire treated effluent so as to achieve Zero Liquid Discharge (ZLD).

 

Keywords : Karur, Textile dyeing units, CETP, Effluent quality, Zero liquid discharge

 

 

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