Modeling the nutrient removal process in aerobic granular sludge system by coupling the reactor- and granule-scale models

Modeling the nutrient removal process in aerobic granular sludge system by coupling the reactor- and granule-scale models

ABSTRACT We developed a model for nutrient removal in an aerobic granular sludge system. This model can quantitatively describe the start‐up of the system by coupling a model for studying the population dynamics of the granules in the reactor (reactor‐scale model) and a model for studying the microb...

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Bibliographic Details
Published in:Biotechnology and bioengineering Vol. 112; no. 1; pp. 53 - 64
Main Authors: Kagawa, Y., Tahata, J., Kishida, N., Matsumoto, S., Picioreanu, C., van Loosdrecht, M.C.M., Tsuneda, S.
Format: Journal Article
Language:English
Published: United States Blackwell Publishing Ltd 01-01-2015
Wiley Subscription Services, Inc
Subjects:
Aerobiosis
Bioreactors
Computer Simulation
Dissolution
Dynamical systems
Dynamics
Granular materials
Granules
individual-based modeling
Mathematical models
microbial granule
Models, Biological
Nitrogen - chemistry
Nitrogen - isolation & purification
nitrogen removal
Nutrient removal
Nutrients
Phosphorus - chemistry
Phosphorus - isolation & purification
phosphorus removal
sequencing batch reactor
Sewage
Simulation
Sludge
Water Purification - methods
sequencing batch reactor
individual-based modeling
microbial granule
nitrogen removal
phosphorus removal
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Summary:ABSTRACT We developed a model for nutrient removal in an aerobic granular sludge system. This model can quantitatively describe the start‐up of the system by coupling a model for studying the population dynamics of the granules in the reactor (reactor‐scale model) and a model for studying the microbial community structure in the granules (granule‐scale model). The reactor‐scale model is used for simulation for 10 days from the start, during which the granule size is relatively small; the granule‐scale model is used after Day 10. The present approach proposes the output data of the reactor‐scale model after 10 days as initial conditions for the granule‐scale model. The constructed model satisfactorily describes experimental data in various spatial and temporal scales, which were obtained in this study by performing the anaerobic–aerobic–anoxic cycles using a sequencing batch reactor. Simulations using this model quantitatively predicted that the stability of nutrient removal process depended largely on the dissolved oxygen (DO) concentration, and the DO setpoint adaptation could improve the nutrient removal performance. Biotechnol. Bioeng. 2015;112: 53–64. © 2014 Wiley Periodicals, Inc. A model describing the start‐up of the aerobic granular sludge system has been developed, by coupling a model of the population dynamics of the granules in the reactor and a model of the microbial community structure in the granules. The constructed model quantitatively predicted that the stability of nutrient removal process depended largely on the dissolved oxygen (DO) concentration. Controlling the dissolved oxygen concentration with DO setpoint adaptation could improve the nutrient removal performance.
Bibliography:New Energy and Industrial Technology Development Organization (NEDO), Japan
ark:/67375/WNG-V2CCSM90-6
ArticleID:BIT25331
istex:73F3B4290AB4F0F5DE8C9827441FCC6FAD303305
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0006-3592
1097-0290
DOI:10.1002/bit.25331