RT Journal Article
T1 Monitoring the stability of aerobic granular sludge using fractal dimension analysis
A1 Pavissich, Juan Pablo
A1 Camus, Nicolás
A1 Campos Gómez, José Luis
A1 Franchi, Óscar
A1 Pedrouso Fuentes, Alba
A1 Carrera Fernández, Paula
A1 Val del Río, Ángeles
A1 Mosquera Corral, Anuska
AB Cyclic episodes of granules formation and disintegration took place in two lab-scale aerobic granular sludge sequencing batch reactors, one fed with synthetic wastewater (COD: 0.6 g L−1 and NH4+–N:0.06 g L−1) and operated at a constant organic loading rate (2.5 g COD per L d), and the other fed with real wastewater (soluble COD: 0.27–1.37 and NH4+–N:0.02–0.16 g L−1) and with a variable loading rate (between 1.1 and 5.5 g CODsoluble per L d). The sludge volume index, density and diameter (mean value and relative standard deviation) of the granular biomass showed great fluctuations, without any clear tendency during the operational period. However, changes in granules fractal dimension values (both mean and relative standard deviation) matched with the formation and disintegration dynamics of the granular biomass. Statistical data analysis showed that the relative standard deviation of the granules fractal dimension could be a useful parameter for monitoring the granules status. Indeed, an increase of its value during the maturation or steady-state granulation stages is an early warning of disintegration episodes. A control strategy to maintain granules integrity based on this parameter is proposed
PB Royal Society of Chemistry
YR 2021
FD 2021
LK http://hdl.handle.net/10347/27891
UL http://hdl.handle.net/10347/27891
LA eng
NO Pavissich, J. P., Camus, N., Campos, J. L., Franchi, Ó, Pedrouso, A., Carrera, P., . . . Mosquera-Corral, A. (2021). Monitoring the stability of aerobic granular sludge using fractal dimension analysis. Environmental Science Water Research & Technology, 7(4), 76-713. doi:10.1039/d1ew00015b
NO This work was funded by the Chilean Government through projects FONDECYT 1180650, FONDECYT 11181107, ANID/ FONDAP/15130015 and ANID PIA/BASAL FB0002, and by the Spanish Government through TREASURE [CTQ2017-83225-C2-1-R] and GRANDSEA [CTM2014-55397-JIN] projects. The authors from Universidade de Santiago de Compostela belong to CRETUS Strategic Partnership [ED431E 2018/01] and to the Galician Competitive Research Group [GRC ED431C 2017/29]. All the Spanish programs are co-funded by FEDER (EU)
DS Minerva
RD 28 abr 2026