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

Mariele K. Jungles; Ángeles Val del Río; Anuska Mosquera-Corral; José Luis Campos; Ramón Méndez; Rejane H. R. Costa

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2018.0247

Published Article

LAPSE:2018.0247

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

Mariele K. Jungles, Ángeles Val del Río, Anuska Mosquera-Corral, José Luis Campos, Ramón Méndez, Rejane H. R. Costa

July 31, 2018

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.

Record ID

LAPSE:2018.0247

Keywords

aeration flowrate, aerobic granules, inoculum, sequencing batch reactor, Wastewater

Subject

Process Design

Suggested Citation

Jungles MK, Val del Río ?, Mosquera-Corral A, Campos JL, Méndez R, Costa RHR. Effects of Inoculum Type and Aeration Flowrate on the Performance of Aerobic Granular SBRs. (2018). LAPSE:2018.0247

Author Affiliations

Jungles MK: 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
Val del Río ?: Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa s/n, E-15782 Santiago de Compostela, Spain [ORCID]
Mosquera-Corral A: Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa s/n, E-15782 Santiago de Compostela, Spain [ORCID]
Campos JL: Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Avda Padre Hurtado 750, Viña del Mar 2520000, Chile
Méndez R: Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa s/n, E-15782 Santiago de Compostela, Spain
Costa RHR: Department of Sanitary and Environmental Engineering, Federal University of SantaCatarina-UFSC/CTC/ENS, CEP 88010 970 Florianópolis, SC, Brazil
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Journal Name

Processes

Volume

5

Issue

3

Article Number

E41

Year

2017

Publication Date

2017-07-19