Advanced search
1 file | 460.88 KB

Towards advanced aeration modelling : from blower to bubbles to bulk

(2017) WATER SCIENCE AND TECHNOLOGY. 75(3). p.507-517
Author
Organization
Abstract
Aeration is an essential component of aerobic biological wastewater treatment and is the largest energy consumer at most water resource recovery facilities. Most modelling studies neglect the inherent complexity of the aeration systems used. Typically, the blowers, air piping, and diffusers are not modelled in detail, completely mixed reactors in a series are used to represent plug-flow reactors, and empirical correlations are used to describe the impact of operating conditions on bubble formation and transport, and oxygen transfer from the bubbles to the bulk liquid. However, the mechanisms involved are very complex in nature and require significant research efforts. This contribution highlights why and where there is a need for more detail in the different aspects of the aeration system and compiles recent efforts to develop physical models of the entire aeration system (blower, valves, air piping and diffusers), as well as adding rigour to the oxygen transfer efficiency modelling (impact of viscosity, bubble size distribution, shear and hydrodynamics). As a result of these model extensions, more realistic predictions of dissolved oxygen profiles and energy consumption have been achieved. Finally, the current needs for further model development are highlighted.
Keywords
air distribution, blower efficiency model, computation fluid dynamics, oxygen transfer, population balance model

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 460.88 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Neves do Amaral, Andreia, Oliver Schraa, Leiv Rieger, Sylvie Gillot, Yannick Fayolle, Giacomo Bellandi, Youri Amerlinck, et al. 2017. “Towards Advanced Aeration Modelling : from Blower to Bubbles to Bulk.” Water Science and Technology 75 (3): 507–517.
APA
Neves do Amaral, A., Schraa, O., Rieger, L., Gillot, S., Fayolle, Y., Bellandi, G., Amerlinck, Y., et al. (2017). Towards advanced aeration modelling : from blower to bubbles to bulk. WATER SCIENCE AND TECHNOLOGY, 75(3), 507–517.
Vancouver
1.
Neves do Amaral A, Schraa O, Rieger L, Gillot S, Fayolle Y, Bellandi G, et al. Towards advanced aeration modelling : from blower to bubbles to bulk. WATER SCIENCE AND TECHNOLOGY. 2017;75(3):507–17.
MLA
Neves do Amaral, Andreia, Oliver Schraa, Leiv Rieger, et al. “Towards Advanced Aeration Modelling : from Blower to Bubbles to Bulk.” WATER SCIENCE AND TECHNOLOGY 75.3 (2017): 507–517. Print.
@article{8517253,
  abstract     = {Aeration is an essential component of aerobic biological wastewater treatment and is the largest energy consumer at most water resource recovery facilities. Most modelling studies neglect the inherent complexity of the aeration systems used. Typically, the blowers, air piping, and diffusers are not modelled in detail, completely mixed reactors in a series are used to represent plug-flow reactors, and empirical correlations are used to describe the impact of operating conditions on bubble formation and transport, and oxygen transfer from the bubbles to the bulk liquid. However, the mechanisms involved are very complex in nature and require significant research efforts. This contribution highlights why and where there is a need for more detail in the different aspects of the aeration system and compiles recent efforts to develop physical models of the entire aeration system (blower, valves, air piping and diffusers), as well as adding rigour to the oxygen transfer efficiency modelling (impact of viscosity, bubble size distribution, shear and hydrodynamics). As a result of these model extensions, more realistic predictions of dissolved oxygen profiles and energy consumption have been achieved. Finally, the current needs for further model development are highlighted.},
  author       = {Neves do Amaral, Andreia and Schraa, Oliver and Rieger, Leiv and Gillot, Sylvie and Fayolle, Yannick and Bellandi, Giacomo and Amerlinck, Youri and Mortier, S{\'e}verine and Gori, Riccardo and Neves, Ramiro and Nopens, Ingmar},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {air distribution,blower efficiency model,computation fluid dynamics,oxygen transfer,population balance model},
  language     = {eng},
  number       = {3},
  pages        = {507--517},
  title        = {Towards advanced aeration modelling : from blower to bubbles to bulk},
  url          = {http://dx.doi.org/10.2166/wst.2016.365},
  volume       = {75},
  year         = {2017},
}

Altmetric
View in Altmetric
Web of Science
Times cited: