Methodology for Performance Analysis of Textile Effuent Treatment Plants in Bangladesh

The effciency of individual units of an effuent treatment plant (ETP) determines the overall performance of the plant and the final effuent quality. In this study an ETP of a composite textile industry in Bangladesh was investigated using this method. Water samples were collected from the main units of the ETP and were analysed for key parameters. The results were used to diagnose problems with the treatment units and to suggest modifications. From this, a simple but robust methodology was developed for evaluating the performance of the different treatment units and the ETP as a whole that could be implemented by ETP managers on a regular basis to improve the performance so that the effuent leaving the factory meets national standards and conforms to therequirements of international buyers. The results showed that poor management, especially chemical dosing, was seriously affecting the ETP’s performance and that simple measures could address the problems.