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Home List of Titles Characterisation of enhanced biological phosphorus removal activated sludges with dissimilar phosphorus removal performances
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/232474
- Characterisation of enhanced biological phosphorus removal activated sludges with dissimilar phosphorus removal performances
- Bond, Philip L.; Keller, Juerg; Blackall, Linda L.
- A sequencing batch reactor (SBR) was operated for enhanced biological phosphorus removal (EBPR) and dramatic differences in the P removing capabilities were obtained in different stages of the operation. At one stage extremely poor P removal occurred and it appeared that bacteria inhibiting P removal overwhelmed the reactor performance. Changes were made to the reactor operation and these led to the development of a sludge with high P removing capability. This latter sludge was analysed by fluorescent in situ hybridisation (FISH) using a probe specific for Acinetobacter. Very few cells were detected with this probe indicating that Acinetobacter played an insignificant role in the P removal occurring here. Analysis of the chemical transformations of three sludges supported the biochemical pathways proposed for EBPR and non-EBPR systems in biological models. A change in operation that led to the improved P removal performance included permitting the pH to rise in the anaerobic periods of the SBR cycle.
- Publication type
- Journal article
- Water Science and Technology: incorporating Proceedings of the 2nd International Conference on Microorganisms in Activated Sludge and Biofilm Processes, Berkeley, California, United States, 21-23 July 1997, Vol. 37, no. 4-5 (1998), pp. 567-571
- Publication year
- Acinetobacter; Activated sludge; Bacterium; Bioreactors; EBPR model; Enhanced biological phosphorus removal; Fluorescence in situ hybridization; pH; Phosphates
- IWA Publishing
- Publisher URL
- Copyright © 1998 International Association on Water Quality. Published by Elsevier Ltd.
- Peer reviewed