Tirupur being a textile belt, faced the crisis of severe pollution of water bodies due to discharge of coloured effluent from the bleaching and dyeing units. More than 600 bleaching and dyeing units remained closed for almost 2 years for want of a reliable solution.  Though various technologies were implemented, none could solve the groundwater pollution problem effectively. This extended the closure of textile dyeing clusters till the installation of the Zero Liquid Discharge (ZLD) unit by Praj which has helped to build confidence for reopening of the textile units in compliance with the pollution norms.
Praj, a global process engineering solutions provider, offers innovative solutions to significantly add value in water and wastewater treatment plants, and bio-ethanol and brewery plants. It has received its second repeat order for ZLD application from the Common Effluent Treatment Plants (CETPs) based in Tirupur. The first two orders were from Veerapandi Textile CETP and the third one  from Sirupooluvapatti CETP, Tirupur.
Praj also successfully commissioned a 100 kilo litre per day ZLD system based on multi-effect evaporation technology at Veerapandi, Tirupur. The entire plant was designed, engineered, fabricated and erected by Praj on turnkey basis. The final products are process condensate and salts which are reusable in the textile dyeing units.  The solution treats effluent stream rejects of reverse osmosis (RO) plant applying Praj’s innovative evaporation and crystallisation technology. This unique technology is instrumental in solving the groundwater pollution problems due to discharge of colorants.
In order to arrive at the most appropriate solution, Praj deployed the best resources and efforts. This involved periodic collection and testing of effluent samples, study of existing effluent treatment plants, developing customised process and engineering solutions and demonstrating the efficacy of the solution on the first plant at Veerapandi.
Based on the successful operation of the first plant at Veerapandi CETP, Praj contracted a second order for treatment of effluent from the textile dyeing cluster. The CETP will treat 700 kilo litres of effluent per day.

Contact:Praj Industries Ltd.