<  Back to the Polytechnique Montréal portal

Ozonation of Primary Sludge and Digested Sludge to Increase Methane Production in a Chemically Enhanced Primary Treatment Facility

Jaime Alexis Chacana Olivares, Marc-André Labelle, Antoine Laporte, Alain Gadbois, Benoit Barbeau and Yves Comeau

Article (2017)

Open Access document in PolyPublie
Open Access to the full text of this document
Accepted Version
Terms of Use: All rights reserved
Download (498kB)
Show abstract
Hide abstract


The purpose of this research was the investigation of the ozonation of sludge as a method to improve anaerobic digestion performance in a chemically enhanced primary treatment facility. Batch tests were conducted to evaluate the effect of ozonation on the physicochemical characteristics of both primary and digested sludge. Then, the performance of semi-continuous anaerobic digesters in combination with ozone treatment was investigated (pre-ozonation and post-ozonation). Ozonation of primary sludge did not increase the soluble COD nor the biodegradable COD, but resulted in the mineralization of a fraction of the organic matter into CO2. However, the ozonation of anaerobic digested sludge resulted in an increase in soluble COD and biodegradable COD and in a small level of mineralization at the dose of 90 mg O3/g COD. Pre-ozonation of primary sludge was not effective in enhancing the performance of the anaerobic digester. The coupling of ozonation and anaerobic digestion by means of the post-ozonation of digested sludge was found to be effective in improving methane production (+16%), for COD removal efficiency and for the dewaterability of anaerobic digesters compared to the control digester.

Uncontrolled Keywords

Ozone; Anaerobic Digestion; Digested Sludge; Methane Production; Primary Sludge

Subjects: 1000 Civil engineering > 1000 Civil engineering
1000 Civil engineering > 1006 Hydrologic engineering
1000 Civil engineering > 1007 Water resources and supply
Department: Department of Civil, Geological and Mining Engineering
Funders: CRSNG/NSERC, VeoliaThe authors also thank the, EnviroSim, City of Repentigny, Comisión Nacional de Investigación Científica y Tecnológica (CONICYT, Chile) - awarded Ph.D. fellowship
PolyPublie URL: https://publications.polymtl.ca/9087/
Journal Title: Ozone: Science & Engineering (vol. 39, no. 3)
Publisher: Taylor & Francis
DOI: 10.1080/01919512.2017.1301247
Official URL: https://doi.org/10.1080/01919512.2017.1301247
Date Deposited: 16 Aug 2021 13:09
Last Modified: 22 May 2023 01:21
Cite in APA 7: Chacana Olivares, J. A., Labelle, M.-A., Laporte, A., Gadbois, A., Barbeau, B., & Comeau, Y. (2017). Ozonation of Primary Sludge and Digested Sludge to Increase Methane Production in a Chemically Enhanced Primary Treatment Facility. Ozone: Science & Engineering, 39(3), 148-158. https://doi.org/10.1080/01919512.2017.1301247


Total downloads

Downloads per month in the last year

Origin of downloads


Repository Staff Only

View Item View Item