ION Exchange wins contract for implementation of zero liquid discharge plant in Panipat refinery December 7, 2022 | Awarded, Industrial Wastewater, Key Segments, Project Updates, Wastewater Ion Exchange (India) Limited has won a contract worth Rs 3,433.6 million from Indian Oil Corporation Limited (IOCL) for implementation of zero liquid discharge plant in Panipat Refinery. This content is restricted.