A NOVEL 16-INCH REVERSE OSMOSIS SYSTEM FOR WATER RECLAMATION
This study focuses on the performance of a novel pilot RO system that incorporates 16-inch RO membrane elements at a local water reclamation plant over a period of 8,500 hours. The unique features of the RO system also include innovative patented flow distributors for even distribution of feed water at entrance and exit of each RO membrane element and electromagnetic field (EMF) coils embedded in the pressure vessels for fouling mitigation. The pilot RO system was run in parallel to the existing full-scale conventional 8-inch RO system, using the same ultrafiltrated secondary effluent from a nearby wastewater treatment plant as the feed water. Computational fluid dynamics (CFD) simulations had shown that higher feed flow rate associated with larger diameter membrane element was more evenly distributed across the face of the leading element in the 16-inch RO system with patented inlet flow distributor, compared to the flow distribution in the 8-inch full-scale RO system with standard anti-telescoping device (ATD). The average permeate flux of the 16-inch RO system was about two times higher than that of the full-scale 8-inch RO system. Even at a high permeation rate, fouling was effectively under control in the 16-inch RO system with the feed pressure and salt rejection well maintained throughout the study. The good fouling inhibition was partly attributed to the presence of EMF, which was demonstrated when the permeate flux declined immediately after the EMF was switched off for a period of time in the study. Another benefit of running the 16-inch RO system is the reduction of energy consumption. This study has shown that the 16-inch RO system consumed about 14.8% less energy compared to the 8-inch full-scale RO system
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: 2007-01-01
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 These proceedings are not peer reviewed.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