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The effect of aeration mode (intermittent vs. continuous) on nutrient removal and greenhouse gas emissions in the wastewater treatment plant of Corleone (Italy)
Abstract
The paper reports the results of an experimental study aimed at comparing two configurations of a full-scale wastewater treatment plant (WWTP): conventional activated sludge (CAS) and oxic-settling-anaerobic process (OSA) with intermittent aeration (IA). A comprehensive monitoring campaign was carried out to assess multiple parameters for comparing the two configurations: carbon and nutrient removal, greenhouse gas emissions, respirometric analysis, and sludge production. A holistic approach has been adopted in the study with the novelty of including the carbon footprint (CF) contribution (as direct, indirect and derivative emissions) in comparing the two configurations. Results showed that the OSA-IA configuration performed better in total chemical oxygen demand (TCOD) and ortho-phosphate (PO4-P) removal. CAS performed better for Total Suspended Solids (TSS) removal showing a worsening of settling properties for OSA-IA. The heterotrophic yield coefficient and maximum growth rate decreased, suggesting a shift to sludge reduction metabolism in the OSA-IA configuration. Autotrophic biomass showed a reduced yield coefficient and maximum growth yield due to the negative effects of the sludge holding tank in the OSA-IA configuration on nitrification. The OSA-IA configuration had higher indirect emissions (30.5 % vs 21.3 % in CAS) from additional energy consumption due to additional mixers and sludge recirculation pumps. The CF value was lower for OSA-IA than for CAS configuration (0.36 kgCO2/m3 vs 0.39 kgCO2/m3 in CAS).
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Authors (7)
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Giorgio Mannina
- Palermo University
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Paulo Marcelo Bosco Mofatto
- Palermo University
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Alida Cosenza
- Palermo University
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Daniele Trapani Di
- Palermo University
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Hazal Gulhan
- Palermo University; Istanbul Technical University
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Antonio Mineo
- Palermo University
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.scitotenv.2024.171420
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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SCIENCE OF THE TOTAL ENVIRONMENT
no. 924,
ISSN: 0048-9697 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Mannina G., Mofatto P. M. B., Cosenza A., Trapani Di D., Gulhan H., Mineo A., Mąkinia J.: The effect of aeration mode (intermittent vs. continuous) on nutrient removal and greenhouse gas emissions in the wastewater treatment plant of Corleone (Italy)// SCIENCE OF THE TOTAL ENVIRONMENT -Vol. 924, (2024), s.171420-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.scitotenv.2024.171420
- Sources of funding:
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- Project “Achieving wider uptake of water-smart solutions—WIDER UPTAKE” (grant agreement number: 869283) financed by the European Union’s Horizon 2020 Research and Innovation Programme
- Verified by:
- Gdańsk University of Technology
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