Model evaluation and optimisation of nutrient removal potential for sequencing batch reactors

Performance of sequencing batch reactors for simultaneous nitrogen and phosphorus removal is evaluated by means of model simulation, using the activated sludge model, ASM2d, involving anoxic phosphorus uptake, recently proposed by the IAWQ Task group. The evaluation includes all major process configurations with different aerobic, anoxic, anaerobic sequences, and fill conditions. Basic relationships between modelling and design based on overall process stoichiometry are established for the interpretation of nutrient profiles associated with different operation modes. A similar approach is also used for the assessment of the effect of major operating parameters on system performance.

[1]  J. Keller,et al.  Simultaneous nitrification and denitrification in bench-scale sequencing batch reactors , 1996 .

[2]  J. J. Heijnen,et al.  OCCURRENCE OF DENITRIFYING PHOSPHORUS REMOVING BACTERIA IN MODIFIED UCT-TYPE WASTEWATER TREATMENT PLANTS , 1997 .

[3]  M. Wentzel,et al.  Difficulties and developments in biological nutrient removal technology and modelling , 1999 .

[4]  Derin Orhon,et al.  The fate of phosphate under anoxic conditions in biological nutrient removal activated sludge systems , 1998, Biotechnology Letters.

[5]  Tomonori Matsuo,et al.  Modelling glycogen storage and denitrification capability of microorganisms in enhanced biological phosphate removal processes , 1995 .

[6]  D. Orhon,et al.  The influence of different substrates on enhanced biological phosphorus removal in a sequencing batch reactor , 1997 .

[7]  D Orhon,et al.  The mechanism and design of sequencing batch reactor systems for nutrient removal--the state of the art. , 2001, Water science and technology : a journal of the International Association on Water Pollution Research.

[8]  Mogens Henze,et al.  Activated Sludge Model No.2d, ASM2D , 1999 .

[9]  A. Tilche,et al.  Phosphate uptake under anoxic conditions and fixed-film nitrification in nutrient removal activated sludge system , 1996 .

[10]  P. Reichert.  AQUASIM-a tool for simulation and data analysis of aquatic systems , 1994 .

[11]  Lloyd H. Ketchum,et al.  Design and physical features of sequencing batch reactors , 1997 .

[12]  Peter A. Wilderer,et al.  Controlled unsteady state processes and technologies - An overview , 1997 .

[13]  W. Gujer,et al.  Activated sludge model No. 3 , 1995 .

[14]  D. Orhon,et al.  The effect of substrate composition on the nutrient removal potential of sequencing batch reactors , 1999 .

[15]  Derin Orhon,et al.  Modelling of activated sludge systems , 1994 .

[16]  P. A. Wilderer,et al.  Sequencing batch reactor technology : Concepts, design and experiences. Discussion. Authors' reply , 1998 .

[17]  P. Dold,et al.  General model for biological nutrient removal activated‐sludge systems: model presentation , 1997 .

[18]  S. Sözen,et al.  Characterization and COD fractionation of domestic wastewaters. , 1997, Environmental pollution.