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The effect of GAOs (glycogen accumulating organisms) on anaerobic carbon requirements in full-scale Australian EBPR (enhanced biological phosphorus removal) plants
被引:116
|作者:
Saunders, AM
[1
]
Oehmen, A
[1
]
Blackall, LL
[1
]
Yuan, Z
[1
]
Keller, J
[1
]
机构:
[1] Univ Queensland, Adv Wastewater Management Ctr, St Lucia, Qld 4072, Australia
关键词:
enhanced biological phosphorus removal (EBPR);
fluorescence in situ hybridisation (FISH);
glycogen accumulating organism (GAO);
polyphosphate accumulating organism (PAO);
poly-beta-hydroxyalkanoate (PHA);
volatile fatty acid (VFA);
D O I:
10.2166/wst.2003.0584
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
Glycogen-accumulating organisms (GAOs) were present in six full-scale plants investigated and in all but one made a significant contribution to the amount of volatile fatty acid (VFA) taken up anaerobically. While most plants surveyed contain GAOs, it was demonstrated that it is possible for a full-scale plant to operate with an insignificant GAO population. "Candidatus Accumulibacter phosphatis" were the significant polyphosphate-accumulating organisms (PAOs) in all plants surveyed. "Candidatus Competibacter phosphatis" were found in all plants along with other possible GAOs that were observed but not identified. A significant GAO population will increase the carbon requirements by removing VFA that could otherwise have been used by PAOs. Process optimization minimizing GAOs in full-scale plants would lead to a more efficient use of VFA.
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页码:37 / 43
页数:7
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