Journal article
Organic carbon removal from wastewater by a PHA storing biofilm using direct atmospheric air contact as oxygen supply
Bioresource Technology, Vol.187, pp.182-188
2015
Abstract
The principal reason for the high energy costs for biological wastewater treatment is the poor transfer efficiency of oxygen to the bulk water phase. The current paper describes a biofilm reactor in which oxygen transfer to the bulk solution is avoided by alternating anaerobic submersed (2. h) and drained (1. h) operation of the biofilm. During the submersed phase the biofilm enriched for glycogen accumulating organism (GAO) stored the organic carbon (acetate) as poly-hydroxy-alkanoate (PHA). After draining the reactor, this carbon stored as PHA was biologically oxidised, using oxygen directly from the atmosphere. The 12. Cmmol/L (384. mg/L BOD) of acetate was completely removed during long term automated operation of the reactor for 9. months with a cycle length of 3.3. h. As the process specifically removes dissolved organic carbon but not N or P it could possibly be coupled with novel processes such as Anammox or nutrient recovery.
Details
- Title
- Organic carbon removal from wastewater by a PHA storing biofilm using direct atmospheric air contact as oxygen supply
- Authors/Creators
- R.M.G. Flavigny (Author/Creator) - Murdoch UniversityR. Cord-Ruwisch (Author/Creator) - Murdoch University
- Publication Details
- Bioresource Technology, Vol.187, pp.182-188
- Publisher
- Elsevier BV
- Identifiers
- 991005540227807891
- Copyright
- © 2015 Elsevier Ltd.
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
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