Beijing Huaifang: Asia’s largest underground MBR-based WWTP
Located in southwest Beijing, the 3-floor plant is built underground to save valuable land. It spans an area of 162,000 m2 with its water treatment equipment. The project aims to improve wastewater and sludge treatment capacity, improve flood control and treated water quality. On top of the plant, a public wetland leisure park will be built. Technical challenges related to this project are mainly due to:
• The main treatment processes being located underground
• Higher treated water quality standards after commissioning
• The complexity of achieving odor-free, low-noise operations
• The challenge of generating sludge power for internal use
• The challenge of recycling wastewater to the wetland park
Today, the plant is capable of recycling 200 million m3 of wastewater a year, which significantly relieves the pressure of wastewater treatment in southern Beijing. The recycled water is used for industrial and commercial purposes and also to replenish nearby waterways, bringing both environmental and economic benefits for sustainable development.
Thanks to a high level of automation, as well as a comprehensive monitoring system, this giant plant operates smoothly, while staff with fewer than 20 people.