The construction of the largest water reuse facility in the country starts

The Dalian Petrochemical Company's Zhongshui Phase II project has officially kicked off. This project, which is the largest reclaimed water reuse facility in the country, has a total investment of nearly 200 million yuan. The plant is designed to produce 20,000 tons of water per day, doubling the capacity of the first-phase project. This advanced unit incorporates a cutting-edge international process known as fluidized bed technology, built upon the existing stages of biochemical treatment, coagulation, flotation filtration, ultrafiltration, reverse osmosis, and vacuum degassing. A key innovation is the use of a new imported filler material that closely matches the specific gravity of water. This material demonstrates exceptional pollutant removal efficiency, particularly in eliminating ammonia and nitrogen from the water. Notably, this technology is still not widely used domestically. The system will continue to utilize wastewater from secondary biochemical treatment as its raw water source, producing primary demineralized water and makeup water for circulating systems. Once operational, the new facility will work in synergy with Dalian Petrochemical’s existing seawater desalination and water reuse systems. The ultimate goal is to replace 30,000 tons of tap water daily with newly treated water, fully supporting the water needs of the company’s 20 million-ton-per-year refining base. With this development, Dalian Petrochemical is taking a significant step toward sustainable water management and reducing reliance on freshwater resources. The project highlights the company’s commitment to adopting advanced technologies and improving environmental performance. It also sets a benchmark for other industrial players looking to enhance their water recycling capabilities.

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