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A study of four-stage thermophilic anaerobic digestion

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A four-stage thermophilic anaerobic digestion system was used to study its potential to reduce solids, reduce volatile organic sulfur compounds (VOSC) and reduce indicator organisms. The anaerobic digesters in series showed enhanced solids and peak VOSC reduction compared to a single stage thermophilic anaerobic digester (control) operated at same total sludge retention time. However, the indicator organism reduction was similar to the control digester. All of the indicator organism reduction occurred in the first two reactors with no additional reduction in the third and fourth reactors.

Document Type: Research Article


Publication date: January 1, 2008

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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 These proceedings are not peer reviewed.

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