期刊
WATER SCIENCE AND TECHNOLOGY
卷 72, 期 6, 页码 858-864出版社
IWA PUBLISHING
DOI: 10.2166/wst.2015.281
关键词
diurnal variability; dosing sidestream; mainstream; nitrite-oxidizing bacteria (NOB) repression; partial nitritation; reject water
资金
- AGAUR
- ACC1O through the ANFIBIO project [2010VALOR0096]
- Spanish Ministerio de Economia y Competitividad through the ONLYBIO project [CTQ2011-24745/PPQ]
- Ministerio de Educacion, Cultura y Deporte, through the Programa Nacional de Movilidad de Recursos Humanos del Plan Nacional de I + D + I [PRX12/00418]
- Marie Curie Intra-European Fellowship (GreenN2) within the 7th European Community Framework Programme [PIEF-GA-2012-326705]
Sewage treatment with anammox could be implemented through a two-step reactor system, where the first reactor would be devoted to partial nitritation. A process design was sketched including control loops. The control strategy regulates the flow-rate of the rich ammonium sidestream produced after dewatering the digested sludge, to keep the ammonium concentration at a set point in the partial nitritation reactor by DOsing the SIde Stream (DOSIS). A second control loop manages the ammonium concentration set point based on the measurement of the total nitrogen in the partial nitritation reactor. A mathematical model was developed to assess the amount of sidestream required. Even in the case of a strong diurnal variability, simulations show how the control strategy is correctly performing, demonstrating the potential of the proposed technology.
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