Tirupur, the well-known textile belt, is facing a 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 two 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 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 waste water treatment plants, bio-ethanol and brewery plants, critical process equipment & systems. It has received orders for ZLD application from the common effluent treatment plants (CETPs) based in the Tirupur textile belt. The first two orders were from Veerapandi Textile CETP and the third one from Sirupooluvapatti CETP, Tirupur.
Successful operation of the first system at Veerapandi CETP led to a repeat order for Praj which successfully commissioned a 100 kl 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 end products are process condensate and salts which are reusable in textile dyeing units.
The solution treats effluent stream rejects of Reverse Osmosis (RO) plant applying Praj’s innovative evaporation & crystallization technology. This unique technology is instrumental in solving the groundwater pollution problems arising 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 the existing effluent treatment plants, developing customized process & 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 kl of effluent per day.
Sirupooluvapatti CETP order
Praj also bagged an order from Sirupooluvapatti CETP Ltd. for treatment of 5,000 kl per day of effluent, making it the largest installation. It consists of 3-stage treatment, including the ZLD system based on multi-effect evaporation.
“The repeat orders show the faith of the client in Praj’s technology and its commitment to the industry and society. Our Zero Liquid Discharge System is energy efficient with low maintenance cost and operates for a longer period between cleaning cycles. The salts recovered from the CETP plant are being re-used by the dyeing units, resulting into considerable savings in operating cost, annually”, said Mr. Pramod Chaudhari, Executive Chairman, Praj Industries.
While the first Veerapandi order of 100 kl per day was contracted in fiscal 2011-12, the repeat orders were contracted at 2012-13 fiscal end.
Praj launched its water & wastewater treatment solutions over three years ago. Since then, it has supplied technology & systems for different industrial applications, including pharmaceuticals, chemicals, agro chemicals, F&B, textiles and other industrial CETPs.
Praj, with global-level operations, offers innovative solutions to add significant value to bio-ethanol facilities, brewery plants, water & wastewater treatment systems as well as process engineering, plant & equipment for customers worldwide. With over 500 references across five continents, Praj is a leading ethanol technology & plant supplier with a strong focus on second-generation bioethanol process development.
Praj Matrix is the R&D center of Praj Industries. The knowledge-based company with expertise and experience in bioprocesses and engineering delivers know-how, licence, engineering design, plant & equipment, project management, commissioning and customer care, and turnkey projects.