Developing China’s largest underground wastewater recycling plant

Xylem has been selected to support the development of the largest underground, wastewater recycling plant in China. The new 31 hectare Beijing water recycling plant will ease sewage treatment pressure currently being experienced in the south of Beijing and improve the water quality of the Liangshui River.

Among more than 600 cities across China, almost half of them suffer from water shortages*. Beijing, China’s vast and densely populated capital city, is one such city currently facing an acute water shortage and recycled water has been identified as an important component of the region’s future water supply portfolio.

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In 2013, the Beijing Municipal Government launched a three-year plan to expedite the construction of wastewater treatment and water recycling facilities in order to increase reclaimed water supply to 4.13 million cubic meters per day, or 1.1 billion cubic meters annually in the Beijing region. This progressive initiative is helping the city to build greater resilience and a more sustainable future. Grey water will be used for industrial and municipal purposes while sludge will be treated and reused as landfill as well as forest soil enrichment.

Energy-efficiency at the Beijing water recycling plant

The new underground treatment plant will reduce land occupancy as well as contain any noise and foul odors emanating from the plant. When complete, the project will benefit citizens living in the Fengtai District, Huaifang area of the Beijing hinterland.

The facility will house four 160 square meter bioreactors. This technology will bring the quality of recycled water to level four (IV) of Environmental Quality Standards for Surface Water. This means that the water can be used for landscaping, industrial, municipal and other purposes.

Xylem has provided ten water inflow lifting pumps, 320 mixers for the bio-treatment process aeration pool, 52 pumps for the membrane filtration of the water reuse process and two pumps for transporting treated wastewater to an above-ground wetland area.

“At Xylem we thrive on helping communities to solve challenging water issues and we are proud to play a key role in this landmark project,” says Shuping Lu, President of Xylem China. “The development incorporates advanced, energy-efficient technologies that will significantly contribute to a sustainable, water secure future, while also delivering valuable ecological co-benefits.”

*http://www.chinadaily.com.cn/china/2015-12/29/content_22850887.htm

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