Wanhua Chemical¡äs Penglai Seawater Desalination Project Completed and Put into Operation
2025-5-14
The completion and commissioning ceremony of Wanhua Chemical¡äs Penglai Seawater Desalination Project was recently held in Penglai District, Yantai City. Liao Zengtai, Chairman of Wanhua Chemical, stated that the power consumption per ton of water production of this project reaches 2.62 kilowatt-hours, which is 25% lower than the original design, making it an energy efficiency benchmark in the global seawater desalination industry. At the same time, this project has also achieved "black screen operation" for the entire plant, and it is the first fully automated unattended seawater desalination plant in China.
Located in the Beigou Chemical Industrial Park in Penglai, the project is the largest industrial-scale membrane-based seawater desalination project planned and constructed in China. With a total investment of 1.8 billion yuan, it is constructed in three phases, with a total scale of 300,000 tons per day. The first-phase project with a capacity of 100,000 tons per day that has been completed and put into operation mainly supplies production water for Wanhua (Penglai) New Material Low-Carbon Industrial Park, saving more than 36 million cubic meters of fresh water annually.
It is understood that this project innovatively uses the circulating cooling water (warm drainage) of the power plant and adopts the "waste heat + membrane method" technology, which can effectively reduce carbon emissions. At the same time, the reverse osmosis membrane process is adopted, which can reduce the operating cost by more than 15% compared with the traditional "double membrane method". In addition, the world¡äs first "black screen operation" system for seawater desalination carried by the project can monitor 12 key indicators such as turbidity, SDI, and conductivity in real time, as well as key equipment and marine parameters, providing support for intelligent decision-making; it can adjust and control parameters such as the start and stop of equipment, the frequency of variable frequency equipment, and the opening degree of valves in real time to minimize the power consumption per ton of water; it can construct a fault knowledge graph and accurately calculate the remaining life of major equipment and the replacement cycle of spare parts to ensure the long-term stable operation of the system.
Located in the Beigou Chemical Industrial Park in Penglai, the project is the largest industrial-scale membrane-based seawater desalination project planned and constructed in China. With a total investment of 1.8 billion yuan, it is constructed in three phases, with a total scale of 300,000 tons per day. The first-phase project with a capacity of 100,000 tons per day that has been completed and put into operation mainly supplies production water for Wanhua (Penglai) New Material Low-Carbon Industrial Park, saving more than 36 million cubic meters of fresh water annually.
It is understood that this project innovatively uses the circulating cooling water (warm drainage) of the power plant and adopts the "waste heat + membrane method" technology, which can effectively reduce carbon emissions. At the same time, the reverse osmosis membrane process is adopted, which can reduce the operating cost by more than 15% compared with the traditional "double membrane method". In addition, the world¡äs first "black screen operation" system for seawater desalination carried by the project can monitor 12 key indicators such as turbidity, SDI, and conductivity in real time, as well as key equipment and marine parameters, providing support for intelligent decision-making; it can adjust and control parameters such as the start and stop of equipment, the frequency of variable frequency equipment, and the opening degree of valves in real time to minimize the power consumption per ton of water; it can construct a fault knowledge graph and accurately calculate the remaining life of major equipment and the replacement cycle of spare parts to ensure the long-term stable operation of the system.