Evaluating operation strategies and process stability of a single stage nitritation-anammox SBR by use of the oxidation-reduction potential (ORP).

A single stage nitritation-anammox SBR was operated for 300 days to investigate the impact of cycle operation strategies on process performance and the oxidation-reduction potential (ORP) as process monitoring parameter. Different combinations of feeding (interval, continuous, one-time) and aeration (interval, continuous) strategies were tested revealing that interval feeding and interval aeration was the most suitable case in terms of process performance (ammonium removal, nitrate production and pH stability) and use of the ORP value as indicator parameter. Further investigations into the use of the ORP value showed clear correlations of the ORP slope with the air flow rate and the maximum ORP peak with the ammonium loading under varying operation conditions. Depletion of the main substrates (ammonium and oxygen) was also detectable fastest following the ORP value proofing its worth for process control.

[1]  T. Nandy,et al.  Correlating on-line monitoring parameters, pH, DO and ORP with nutrient removal in an intermittent cyclic process bioreactor system. , 2008, Bioresource technology.

[2]  J. G. Kuenen,et al.  Copyright � 1995, American Society for Microbiology Anaerobic Oxidation of Ammonium Is a Biologically Mediated Process , 1994 .

[3]  Peter A. Vanrolleghem,et al.  Engineering aspects and practical application of autotrophic nitrogen removal from nitrogen rich streams , 2010 .

[4]  B Wett,et al.  Development and implementation of a robust deammonification process. , 2007, Water science and technology : a journal of the International Association on Water Pollution Research.

[5]  E. Płaza,et al.  Partial nitritation/Anammox and CANON Nitrogen removal systems followed by conductivity measurements , 2007 .

[6]  C. Ra,et al.  Biological nitrogen removal with a real-time control strategy using moving slope changes of pH(mV)- and ORP-time profiles. , 2011, Water research.

[7]  D. Aguado,et al.  Monitoring pH and ORP in a SHARON reactor. , 2011, Water science and technology : a journal of the International Association on Water Pollution Research.

[8]  K. Rosenwinkel,et al.  Deammonification in the Moving‐Bed Process for the Treatment of Wastewater with High Ammonia Content , 2005 .

[9]  B. Akin,et al.  Monitoring and control of biological nutrient removal in a Sequencing Batch Reactor , 2005 .

[10]  M. V. van Loosdrecht,et al.  Upgrading of sewage treatment plant by sustainable and cost-effective separate treatment of industrial wastewater. , 2010, Water science and technology : a journal of the International Association on Water Pollution Research.

[11]  Baikun Li,et al.  The Application of ORP in Activated Sludge Wastewater Treatment Processes , 2001 .

[12]  M. Strous,et al.  Completely autotrophic nitrogen removal over nitrite in one single reactor. , 2002, Water research.

[13]  H. Siegrist,et al.  Full-scale nitrogen removal from digester liquid with partial nitritation and anammox in one SBR. , 2009, Environmental science & technology.

[14]  C. Ra,et al.  Biological nutrient removal with an internal organic carbon source in piggery wastewater treatment , 2000 .

[15]  H. Siegrist,et al.  Combined nitritation-anammox: advances in understanding process stability. , 2011, Environmental science & technology.

[16]  Donald S. Mavinic,et al.  Real-Time Control of Two-Stage Sequencing Batch Reactor System for the Treatment of Animal Wastewater , 1998 .

[17]  H. Siegrist,et al.  Anaerobic ammonium oxidation of ammonium-rich waste streams in fixed-bed reactors. , 2004, Water science and technology : a journal of the International Association on Water Pollution Research.

[18]  W Verstraete,et al.  Granular biomass capable of partial nitritation and anammox. , 2009, Water science and technology : a journal of the International Association on Water Pollution Research.

[19]  J. G. Kuenen,et al.  Anaerobic ammonium oxidation discovered in a denitrifying fluidized bed reactor , 1995 .

[20]  Marc Strous,et al.  Key Physiology of Anaerobic Ammonium Oxidation , 1999, Applied and Environmental Microbiology.

[21]  A. E. Greenberg,et al.  Standard Methods for the Examination of Water and Wastewater seventh edition , 2013 .

[22]  R. Méndez,et al.  Microbial community distribution and activity dynamics of granular biomass in a CANON reactor. , 2010, Water research.

[23]  J. Charpentier,et al.  ORP regulation and activated sludge: 15 years of experience , 1998 .

[24]  B. Smets,et al.  Sequential aeration of membrane-aerated biofilm reactors for high-rate autotrophic nitrogen removal: experimental demonstration. , 2010, Environmental science & technology.

[25]  P. Ndegwa,et al.  Potential strategies for process control and monitoring of stabilization of dairy wastewaters in batch aerobic treatment systems , 2007 .

[26]  Hyunook Kim,et al.  pH and Oxidation–Reduction Potential Control Strategy for Optimization of Nitrogen Removal in an Alternating Aerobic–Anoxic System , 2001, Water environment research : a research publication of the Water Environment Federation.

[27]  D. Wareham,et al.  Oxidation-Reduction Potential as a Monitoring Tool in a Low Dissolved Oxygen Wastewater Treatment Process , 2003 .