The new system, used together with the existing treatment facility, recycles approximately half of the wastewater used in production through a rigorous three-step process, saving about 300,000 cubic meters of fresh water every year. The water is first treated to remove heavy metals before entering a membrane bioreactor. Next, the water is mixed with sanitary wastewater to remove organic components and remaining salts are extracted via reverse osmosis. Finally, the purified wastewater is reintroduced into the plant’s water cycle.
The water facility also collects rainwater in underground retention basins to augment the onsite recycled water, providing up to 250,000 cubic meters of additional water supply annually, depending on rainfall.