Impact of Ultrasound Treatment on the Biofilm Structure and Performance of a Membrane Biofilm Reactor for Tertiary Hydrogen Driven Denitrification of Wastewater
This study aimed to investigate the impact of the ultrasound treatment on autotrophic denitrification of low organic carbon content wastewater with a biofilm growing on hydrogen diffusing membrane. Ultrasound treatment significantly affected thickness of the biofilm. When no mixing or ultrasound treatment was applied to the system, biofilm thickness averaged 813+/− 254 μm due to accumulation of solids on the biofilm surface. Ultrasound treatment resulted in the reduction of biofilm thickness to 335+/−104 μm. In contrast, the biofilm density, expressed as total solids per liter of biofilm volume exhibited an increasing trend when ultrasound treatment was introduced. No significant changes in carbohydrates and EPS content within biofilm was observed, however overall cell viability dropped significantly from 31+/−1% to only 15+/−1% with ultrasound treatment. Ultrasound treatment proved to be successful in improving denitrification efficiency. Rates for operation without any shear force were on the average 60% lower than those obtained with ultrasound treatment.
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 These proceedings are not peer reviewed.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