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Storage and growth of denitrifiers in aerobic granules: Part II. model calibration and verification
Author(s) -
Ni BingJie,
Yu HanQing,
Xie WenMing
Publication year - 2007
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.21554
Subject(s) - anoxic waters , granule (geology) , activated sludge model , biological system , denitrification , nitrate , calibration , sensitivity (control systems) , stoichiometry , chemistry , environmental science , mathematics , environmental chemistry , materials science , nitrogen , environmental engineering , statistics , biology , activated sludge , engineering , sewage treatment , organic chemistry , electronic engineering , composite material
Abstract A mathematical model to describe the simultaneous storage and growth activities of denitrifiers in aerobic granules under anoxic conditions has been developed in an accompanying article. The sensitivity of the nitrate uptake rate (NUR) toward the stoichiometric and kinetic coefficients is analyzed in this article. The model parameter values are estimated by minimizing the sum of squares of the deviations between the measured and model‐predicted values. The model is successfully calibrated and a set of stoichiometric and kinetic parameters for the anoxic storage and growth of the denitrifiers are obtained. Thereafter, the model established is verified with three set of experimental data. The comparison between the model established with the ASM1 model and ASM3 shows that the present model is appropriate to simulate and predict the performance of a granule‐based denitrification system. Biotechnol. Bioeng. 2008;99: 324–332. © 2007 Wiley Periodicals, Inc.