Indorama Ventures Portugal explored various ways to optimize raw water and chemical utilization while recycling plant effluents (saline and wastewater). The plant’s reverse osmosis technology was chosen, with the primary goal of recovering the cooling tower blowdown and rerouting it to demineralize the water lines feed tank, reducing the use of strong acid and alkali for membrane regeneration.
This initiative is anticipated to result in an annual raw water consumption reduction of 740,000 m3 (about 12% of overall plant usage). Similarly, this will result in a 15% reduction in caustic soda usage and a 47% reduction in hydrochloric acid consumption.