Next Article in Journal
Design of Experiments for Control-Relevant Multivariable Model Identification: An Overview of Some Basic Recent Developments
Next Article in Special Issue
Comparison of CO2 Capture Approaches for Fossil-Based Power Generation: Review and Meta-Study
Previous Article in Journal / Special Issue
Development of Molecular Distillation Based Simulation and Optimization of Refined Palm Oil Process Based on Response Surface Methodology
Article Menu
Issue 3 (September) cover image

Export Article

Open AccessArticle
Processes 2017, 5(3), 41;

Effects of Inoculum Type and Aeration Flowrate on the Performance of Aerobic Granular SBRs

Department of Sanitary and Environmental Engineering, Federal University of SantaCatarina-UFSC/CTC/ENS, CEP 88010 970 Florianópolis, SC, Brazil
Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa s/n, E-15782 Santiago de Compostela, Spain
Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Avda Padre Hurtado 750, Viña del Mar 2520000, Chile
Author to whom correspondence should be addressed.
Received: 8 June 2017 / Revised: 13 July 2017 / Accepted: 14 July 2017 / Published: 19 July 2017
Full-Text   |   PDF [1998 KB, uploaded 20 July 2017]   |  


Aerobic granular sequencing batch reactors (SBRs) are usually inoculated with activated sludge which implies sometimes long start-up periods and high solids concentrations in the effluent due to the initial wash-out of the inoculum. In this work, the use of aerobic mature granules as inoculum in order to improve the start-up period was tested, but no clear differences were observed compared to a reactor inoculated with activated sludge. The effect of the aeration rate on both physical properties of granules and reactor performance was also studied in a stable aerobic granular SBR. The increase of the aeration flow rate caused the decrease of the average diameter of the granules. This fact enhanced the COD and ammonia consumption rates due to the increase of the DO level and the aerobic fraction of the biomass. However, it provoked a loss of the nitrogen removal efficiency due to the worsening of the denitrification capacity as a consequence of a higher aerobic fraction. View Full-Text
Keywords: aeration flowrate; aerobic granules; inoculum; sequencing batch reactor; wastewater aeration flowrate; aerobic granules; inoculum; sequencing batch reactor; wastewater

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Jungles, M.K.; Val del Río, Á.; Mosquera-Corral, A.; Campos, J.L.; Méndez, R.; Costa, R.H.R. Effects of Inoculum Type and Aeration Flowrate on the Performance of Aerobic Granular SBRs. Processes 2017, 5, 41.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Processes EISSN 2227-9717 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top