Stratus was retained by the Kanchipuram Dyers association to evaluate adequacy of their pre-treatment system and provide engineering solutions to supplement existing treatment facilities to meet suspended solids, total dissolved solids and color requirements prior to discharge from their facilities. A large number of small dyers in the town of Kanchipuram, Tamil Nadu, were shut down by the local courts due to non-compliance with regulations at their pre-treatment facilities. Stratus teamed up with

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IIT Madras to provide consulting services to the dyers association and help the individual dyeing units. The scope of work consisted of evaluating the existing pre- treatment facilities to remove suspended solids, dissolved solids and color from their effluent and, if found to be in non-compliance with Tamil Nadu Pollution Control Board’s requirements, then supplement the design of the pre-treatment to meet the regulations.

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Stratus’ activities included conducting site visits to inspect 61 association members’ dyeing facilities, creating a questionnaire to collect structural and functional information of the pre-treatment facilities, and collecting information on operational methodologies that resulted in effluent. In addition, we teamed up with IIT Madras to conduct laboratory testing of the effluent from silk and cotton dyeing facilities to identify optimum dosage for the effluent streams.