Pathogens and Indicator Organisms in Class B Biosolids Before and after the Part 503 Sludge Rule
Thirty three samples of Class B biosolids were obtained from wastewater treatment plants from across the nation. Biosolid samples included cake (≃ 20% solids) and liquid biosolids (8% solid). Analyses included: fecal coliforms; E. coli 0157H7; Salmonella; Shigella; Clostridium perfringens; enterovirus; adenovirus; coliphage; and Ascaris. This is the first nationwide study on pathogens in biosolids since the EPA Part 503 Regulations went into effect, and provides a comprehensive database on the occurrence of pathogens in Class B anaerobically digested biosolids. Data show that indicator loads nationwide in Class B biosolids (e.g. fecal coliforms) are similar to concentrations found back in the early 1990s. In contrast, Salmonella and enterovirus concentrations are now significantly lower than in the 1990s. Data from the single wastewater treatment plant in Tucson, Arizona from 1985 to present show similar data trends. Overall, data suggest that the Part 503 Rule has resulted in reduced pathogen loads.
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: 2008-01-01
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 These proceedings are not peer reviewed.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