FOG and Scum on the Run: Receiving, Heating, Mixing, and Digester Feeding
Scum and FOG: nuisance or commodity? Using an innovative approach, the 180 MGD capacity Back River Wastewater Treatment Plant is turning scum and FOG from a nuisance into a commodity. This paper describes a project that will provide improvements to better receive, convey, treat, and thicken trucked-in septage and FOG, as well as thicken primary scum, prior to processing in anaerobic digestion. Co-digesting this material more efficiently will improve anaerobic digestion and maximize energy production from the on-site engine generators. Trucked-in septage and FOG will be pre-treated, prior to thickening. Three new septage receiving units will screen and remove debris and grit. The screenings and grit will be discharged to dumpsters, while the liquid flow will be diverted to DAF thickener basins. Two existing out-of-service DAF thickening basins will be retrofitted to operate as a separation process. The screened septage and FOG, as well as the primary scum collected onsite, will be combined in the two existing thickening basins. The thickeners will retain the ability to add Waste Activated Sludge (WAS). Thickened scum/FOG will be digested, together with thickened primary and secondary sludge, in a two-phase, acid-gas anaerobic digestion process.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2011-01-01
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 These proceedings are not peer reviewed.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