Praxair, Inc. (Danbury, Conn.; www.praxair.com), through its subsidiary Beijing Praxair Inc., has signed a long-term gas supply contract with Gao Bei Dian Water Recycling Plant of Beijing Drainage Group Co. Praxair will build, own and operate a vacuum pressure swing adsorption unit to supply gaseous oxygen to the plant for its wastewater treatment and recycling processes.
Located in downtown Beijing, the Gao Bei Dian recycling plant is the largest in China, with capacity to process 1-million ton/d of recycled water. The plant treats wastewater from municipal drainage and uses the recycled product as cooling water for local power plants as well as for landscaping needs throughout the city. The plant plays a major role in Beijing Municipality’s Wastewater Treatment and Recycled Water Use Project, helping to mitigate water shortages and supporting the city’s sustainable development efforts.