Journal article
Multistage wastewater treatment using separated storage driven denitrification and nitrification biofilms
Water Science & Technology, Vol.53(6), pp.51-58
2006
Abstract
The feasibility of combining a previously reported storage driven denitrification biofilm, where 80% of influent acetate can be converted to poly-beta-hydroxybutyrate (PHB), with a suitable nitrification reactor, either submerged or trickling filter design, to achieve complete biological nitrogen removal was tested. The reactor system showed the potential of complete biological nitrogen removal of waste streams with a C/N ratio as low as 3.93 kg COD/kg N-NH3 at an overall nitrogen removal rate of 1.1 mmole NH3/L/h. While the efficiency and the rates of nitrogen removal were higher than what is observed in traditional or simultaneous nitrification and denitrification (SND) systems, there were two problems that require further development: (a) the incomplete draining of the reactor caused ammonia retention and release in the effluent, limiting the overall N-removal and (b) pH drifts in the nitrification step slowed down the rate of nitrification if not corrected by appropriate pH adjustment or buffering.
Details
- Title
- Multistage wastewater treatment using separated storage driven denitrification and nitrification biofilms
- Authors/Creators
- L.J. Hughes (Author/Creator)J. Lancaster (Author/Creator)R. Cord-Ruwisch (Author/Creator)
- Publication Details
- Water Science & Technology, Vol.53(6), pp.51-58
- Publisher
- International Water Association Publishing
- Identifiers
- 991005543203207891
- Copyright
- © IWA Publishing 2006
- Murdoch Affiliation
- School of Biological Sciences and Biotechnology
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.83 Bioengineering
- 3.83.466 Activated Sludge
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- Environmental Sciences
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