Gradiant and Archroma Partner to Advance Water Circularity in Thailand

Archroma, a global leader in speciality chemicals, has successfully implemented a state-of-the-art Zero Liquid Discharge (ZLD) technology at its Mahachai plant in Thailand. The ZLD solution was designed and built by Gradiant, a global leader in advanced water and wastewater treatment. This milestone project marks a major leap forward in water circularity, enabling the recovery of 90-95% of wastewater for reuse and the extraction of valuable minerals for industrial applications.

Archroma, a global leader in sustainable speciality chemicals, partnered with Gradiant to deploy a high-efficiency, membrane- and oxidation-based ZLD solution, reinforcing its commitment to responsible water management in the textile industry. Located in a water-stressed region near Bangkok, the Mahachai plant now serves as a model for sustainable textile dye production, significantly reducing reliance on local water supplies while improving environmental resilience.

As part of its broader sustainability endeavour, Archroma addresses critical challenges within the apparel and textile industry, particularly water consumption.

Since 2019, Archroma has evaluated various ZLD solutions to address growing water challenges in Thailand. Gradiant’s Counterflow Reverse Osmosis (CFRO) was selected as the preferred technology for its ability to treat diverse wastewater compositions with superior efficiency and minimal energy consumption. The modular system seamlessly integrates with the plant’s existing wastewater treatment infrastructure, maximizing desalination capacity and water recovery while reducing the plant’s environmental footprint.

In addition to CFRO, Gradiant’s Free Radical Oxidation (FRO) technology has been deployed to remove colour and organics from the RO concentrate, ensuring safe discharge and meeting stringent environmental regulations. The system also enables the recovery of concentrated brine, which Archroma repurposes within the dyeing process or supplies to industry partners for applications such as resin regeneration and chlorine production, further promoting a circular economy in water and resource management. Thailand faces mounting water stress due to climate change, extreme droughts, and ageing infrastructure, making sustainable water management an urgent priority. By implementing Gradiant’s ZLD solution, Archroma significantly reduces its dependence on freshwater sources, ensuring long-term operational resilience in a resource-constrained environment.