Siemens to Provide Wastewater Reuse System in Beijing, China
Reuse system at city's Beixiaohe treatment plant has more than doubled the plant's capacity
Three months before the beginning of the 2008 games in Beijing, Siemens Water Technologies has started up a wastewater reuse system at the city’s Beixiaohe wastewater treatment plant (WWTP). The city will use eco-friendly technologies in water/wastewater management. The goal is to process 90% of the wastewater, with 50% for recycle and reuse. The solution that Siemens provided includes a Memjet membrane bioreactor (MBR) system, which treats wastewater for reuse in the Olympic Village central area, fountains and lakes. The treatment system has more than doubled the plant’s capacity, from 40,000 to 100,000 cu meters per day.
Beixiaohe WWTP, located in the northern part of Beijing City, has a capacity of 100,000 cu meters per day with a service population of 400,000.
The Memjet MBR system at Beixiaohe contains biological and membrane treatment steps. With 4,864 membranes, the system is one of the largest of its kind in the world. The Beijing Drainage Group chose the system because it takes up 60% less space than conventional technology, and it fit exactly in the plant’s existing space. Besides the MBR system, Siemens provided process design, mechanical equipment, electrical and automation systems, instrumentation, installation supervision and operation and maintenance training. The MBR treats 60,000 cu meters per day of water for reuse, and 10,000 cu meters per day of that water is further treated with a reverse osmosis system for decorative fountains and a “theme” lake.
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