Storage and growth of denitrifiers in aerobic granules: Part I. Model development

Ni, Bing-Jie and Yu, Han-Qing (2008) Storage and growth of denitrifiers in aerobic granules: Part I. Model development. Biotechnology and Bioengineering, 99 2: 314-323. doi:10.1002/bit.21555

Author Ni, Bing-Jie
Yu, Han-Qing
Title Storage and growth of denitrifiers in aerobic granules: Part I. Model development
Journal name Biotechnology and Bioengineering   Check publisher's open access policy
ISSN 0006-3592
Publication date 2008-02
Sub-type Article (original research)
DOI 10.1002/bit.21555
Volume 99
Issue 2
Start page 314
End page 323
Total pages 10
Place of publication Hoboken, NJ United States
Publisher John Wiley and Sons
Language eng
Formatted abstract
A mathematical model, based on the Activated Sludge Model No.3 (ASM3), is developed to describe the storage and growth activities of denitrifiers in aerobic granules under anoxic conditions. In this model, mass transfer, hydrolysis, simultaneous anoxic storage and growth, anoxic maintenance, and endogenous decay are all taken into account. The model established is implemented in the well-established AQUASIM simulation software. A combination of completely mixed reactor and biofilm reactor compartments provided by AQUASIM is used to simulate the mass transport and conversion processes occurring in both bulk liquid and granules. The modeling results explicitly show that the external substrate is immediately utilized for storage and growth at feast phase. More external substrates are diverted to storage process than the primary biomass production process. The model simulation indicates that the nitrate utilization rate (NUR) of granules-based denitrification process includes four linear phases of nitrate reduction. Furthermore, the methodology for determining the most important parameter in this model, that is, anoxic reduction factor, is established
Keyword activated sludge model No. 3 (ASM3)
Aerobic Granules
Nitrate utilization rate (NUR)
Simultaneous storage and growth
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
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