An Advanced Biosolids Treatment Process and Potential Beneficial Applications of the Processed Biosolids
An innovative and cost-effective biosolids treatment and processing technology was developed and demonstrated at a pilot and full-scale at the Guelph Wastewater Treatment Plant in Ontario. The Lystek process involves a low but optimized application of heat, alkali, and mixing in a batch or semi-continuous system to achieve the desired physical, chemical and microbiological characteristics of the processed biosolids. The resultant processed product is a high solids concentration (12 – 14%), pathogen-free liquid biosolids product which is fully compatible with standard equipment in use for land application of biosolids and liquid manure. The process achieves conversion of Ontario's Nutrient Management Act Class B biosolids to US EPA Class A biosolids. Processed material retains the pumpability needed to reduce the costs of biosolids handling, storage, transport and land application and is suitable for beneficial re-use and application as a fertilizer product even after prolonged seasonal storage at ambient temperature in Canadian weather conditions. Processed materials can be stored for long periods of time at room temperature (17–22°C) without evidence of re-growth of harmful pathogens such as Escherichia coli, Salmonella and fecal coliforms. Application of Lystek process on raw sewage sludge and other intermediate wastewater solids indicated the versatility of the process that may have a potential to minimize the burden on the existing intermediate biosolids/sludge handling processes within the wastewater treatment facility, increase energy recovery, reduce the total biosolids generated and reduced storage capacity in the plant.
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: 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 These proceedings are not peer reviewed.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