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Beijing, China currently transports dewatered, digested and undigested sludges to rural areas for stockpiling and traditional agricultural use. As the city grows, this is no longer a viable option. Several new wastewater treatment plants are expected to be on-line by 2008 which will nearly double the current sludge production. This study recommends that Beijing use combined heat drying/composting as the primary utilization strategy. It also recommends Beijing divert as much sludge as practical to pre-calciner type cement kilns for air pollution control, and to conventional cement kilns as supplemental fuel to be burned with coal and limestone.

Document Type: Research Article


Publication date: 2007-01-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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