SEQUENTIAL ANAEROBIC-AEROBIC DIGESTION FOR ENHANCED VOLATILE SOLIDS REDUCTION AND NITROGEN REMOVAL
Sequential anaerobic – aerobic digestion has been studied for use in wastewater treatment, but has had limited use for digestion of waste solids. Recent studies suggest that some solids in sludge are degraded only during anaerobic digestion and some only during aerobic digestion. Therefore, dual digestion (anaerobic/aerobic) would be expected to provide volatile solids reduction beyond that achieved by either anaerobic or aerobic digestion alone. In this investigation, dual digestion was compared to single stage anaerobic digestion using both mesophilic (35°C) and thermophilic (55°C) digestion. The results showed that dual digestion was able to achieve up to 65% VS reduction, compared to 46 and 52% by mesophilic and thermophilic digestion, respectively alone. Aerobic digestion times of 3, 6 and 9 days were studied and increased VS reduction was observed for all aerobic detention times. This study also showed that more than 50% total nitrogen and 80 % ammonia can be removed from the anaerobic effluent after digesting it aerobically.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Research Article
Publication date: 2006-01-01
More about this publication?
- 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 These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites