Biosolids Study and Testing in China Client: City of Hengyang Location: Hunan, China With a population of 7.1 million, Hengyang is one of the fastest growing cities in China. Due to the requirement of new stringent national biosolids quality standards, the City of Hengyang is seeking advanced biosolids treatment to meet the new sludge quality limits. The City currently operates 11 WWTPs, including the 40-mgd Song Ting WWTP, built in 2011.Hengyang is located in the central south region of China. With a population of 7.1 million, Hengyang is one of the fastest growing cities in China. The wasted activated sludge is dewatered by a total of three centrifuges. The average cake solids content is approximately 20%, which is disposed in landlls. Project Outcomes and Benefits Providing biosolids

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