PARTICLE SIZE DISTRIBUTION TESTING AS A DIAGNOSTIC TOOL FOR OPTIMIZING FILTRATION AND UV DISINFECTION SYSTEMS
Particle size distribution (PSD) testing is a diagnostic and a predictive tool that can be effectively utilized to more fully quantify the factors that impact filtration and UV disinfection performance. The results that will be presented during this paper have been obtained from several bench, pilot, and full scale filtration and UV disinfection studies. Through the use of PSD analyses it has been demonstrated that filtration performance of both cloth media and granular media filters is negatively affected by the presence of large quantities of smaller sized particles. It has also been demonstrated that the type of upstream biological treatment processes employed will have a significant effect on the secondary effluent PSD and turbidity levels. Biological treatment processes such as trickling filter-solids contact and pure oxygen activated sludge plants have been shown to produce a secondary effluent with a large concentration of smaller sized particles. To effectively treat secondary effluents from biological treatment process that produce large quantities of smaller sized particles, such that the Title 22 turbidity limits of 2 NTU can be satisfied, a coagulation, and flocculation step will be required. PSD analyses can also be used to ensure that a filter prior to a UV disinfection system is adequately removing larger sized particles that could shield coliform bacteria from UV light and result in residual coliform concentrations.
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: 2003-01-01
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 These proceedings are not peer reviewed.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