Sludge to energy plant operation awarded in Yangzhou, China

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Sludge to energy plant operation awarded in Yangzhou, China

Joint venture Yangzhou Sino French Environment Company (Yangzhou Sino French) has won a 30-year contract worth €234 million to operate the Yangzhou sludge-drying plant.        

The purpose of the contract is to dry sludge from the wastewater treatment plants serving Yangzhou’s 4.5 million inhabitants and its industrial customers for the next 30 years. The project will start in 2015 with an initial treatment capacity of 300 metric tons/day, eventually handling 500 metric tons/day to match the city’s economic and urban development.

Yangzhou lies in the heart of Jiangsu province. With its fast economic growth (GDP up 12% in 20132), the production of wet sludge from wastewater treatment plants should reach 200 metric tons a day in the coming months.

The "12th Five-Year Plan" has set a clear target to increase municipal sludge treatment to 70%-80% by 2015. The first sludge drying plant was opened in 2009 to treat sludge from the wastewater treatment plant at Chongqing Tangjiatuo.

As part of this latest contract, SUEZ subsidiary Yangzhou Sino French will build a sludge treatment plant in Yangzhou’s technological and economic development zone, near the electricity plant.

The process adopted will decontaminate and stabilise the biological waste produced by neighbouring wastewater treatment plants, notably those at Tangwang and Liuwei. The dried sludge will then be routed to the adjacent electricity power plant to be mixed with coal for combustion.

Yan Junquan, chief executive officer of Yangzhou Jieyuan Discharge Water Company, said: The secondary pollution produced by the landfilling of untreated wet sludge is a growing concern.”

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