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Nitrifying Genera in Activated Sludge May Influence Nitrification Rates
- Article from:
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Water Environment Research
- Article date:
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May 1, 2008
- Author:
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Copyright informationCopyright Water Environment Federation May 2008. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT:
Sequencing batch reactors were acclimated under aerobic and alternating anoxic/aerobic conditions. Greater nitrification rates in the alternating reactor were investigated by comparing environmental conditions. In the alternating reactor, pH, alkalinity, oxygen, and nitrite were higher at the onset of aerobic nitrification. Kinetic studies and batch tests, with biomass developed under aerobic and alternating conditions, revealed that these factors were insufficient to explain the divergent nitrification rates. Nitrifying genera vary in nitrification kinetics and sensitivity to environmental conditions. Nitrosospira and Nitrospira spp. could dominate in aerobic reactors, as they ...
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