Predicting settling performance of ANAMMOX granular sludge based on fractal dimensions

Wang, Zhiyao and Zheng, Ping (2017) Predicting settling performance of ANAMMOX granular sludge based on fractal dimensions. Water Research, 120 222-228. doi:10.1016/j.watres.2017.03.056


Author Wang, Zhiyao
Zheng, Ping
Title Predicting settling performance of ANAMMOX granular sludge based on fractal dimensions
Journal name Water Research   Check publisher's open access policy
ISSN 1879-2448
0043-1354
Publication date 2017-09-01
Sub-type Article (original research)
DOI 10.1016/j.watres.2017.03.056
Open Access Status Not yet assessed
Volume 120
Start page 222
End page 228
Total pages 7
Place of publication London, United Kingdom
Publisher I W A Publishing
Language eng
Abstract The settling performance of ANAMMOX granular sludge determines the biomass retention in reactors, and finally determines the potential reaction capacity. In this paper, Stokes equation was modified by fractal dimensions to describe the settling performance of ANAMMOX granular sludge. A new method was developed to obtain fractal dimensions, and a fractal settling model was established for ANAMMOX granular sludge. The fractal settling model was excellent with only a small deviation of 0.8% from the experimental data. Assuming normal distribution of all Feret diameters, 88% experimental data fell into the 90% confidence interval of settling velocities. Further assuming logarithmic normal distribution, 95% experimental data fell into the 90% confidence interval. The fractal settling model is helpful for the prediction of settling velocities of granular sludge and the optimization of bioreactor performance.
Keyword ANAMMOX granular sludge
Feret diameter
Fractal dimension
Settling velocity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Advanced Water Management Centre Publications
 
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