Suez commissions China’s largest industrial membrane-based seawater desal plant

China’s largest industrial membrane-based seawater desalination plant, designed and built by Suez, has officially begun operations in Wanhua Chemical Group’s Penglai Industrial Park in Yantai, Shandong.

Suez and its partners mark the commissioning of the seawater desalination plant at Wanhua Chemical’s Penglai Industrial Park.
Suez and its partners mark the commissioning of the seawater desalination plant at Wanhua Chemical’s Penglai Industrial Park.

Designed with a total capacity of 300,000 m3 per day to be delivered in three phases, this is the largest industrial membrane-based seawater desalination project planned in China to date.

The facility employs low-carbon, energy-efficient, and environmentally responsible processes, achieving over 15% cost savings compared to conventional dual-membrane technologies. With the full commissioning of the first phase, it will produce 100,000 m³ of desalinated water daily, resulting in annual savings of over 36 million m³ of freshwater. Additionally, the facility features a highly advanced automation system, making it China’s first fully automated desalination plant.

“The completion of the Penglai seawater desalination project represents not only a firm step forward for Wanhua’s journey toward green and low-carbon industrial development, but also a significant milestone in the innovation and application of seawater desalination technology in China,” said Liao Zengtai, chairman of Wanhua Chemical Group. “Through our partnership with Suez, the project has achieved a world-leading standard by employing the advanced technology and the optimal process, thereby establishing a global benchmark for energy efficiency in the seawater desalination industry.”

“The Penglai facility, constructed to the highest industrial standards, is a landmark project between Suez and Wanhua Chemical Group, building on our successful partnership since 2017,” said Pierre Pauliac, interim co-CEO & chief operating officer of Suez Water. “It stands as a powerful example of what is possible when innovation, ambition, and partnership come together, to address the urgent need for fresh water in coastal areas.”